start-ver=1.4 cd-journal=joma no-vol=84 cd-vols= no-issue=1 article-no= start-page=77 end-page=80 dt-received= dt-revised= dt-accepted= dt-pub-year=1995 dt-pub=19950201 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=From Vegetable Crop Sience to Ornamental Floriculture kn-title=蔬菜園芸学から花卉園芸学へ en-subtitle= kn-subtitle= en-abstract=1987年4月、著者は京都大学農学部を卒業し、京都大学農学部附属農場に助手として赴任した。農場では蔬菜部に配属され、蔬菜園芸学の研究を中心に行ってきた。1993年11月、岡山大学農学部に転任するまでに農場では’メロン果実の単為的結果に及ぼす植物生長調節物質の影響’、’大果系イチゴの奇形果発生に関する研究’、’合成サイトカイニンによるトマトの空洞果抑制に関する研究’、’アスパラガスの1年生株を用いた促成栽培に関する研究’等の研究を行ってきた。その中から私が特に興味を示し、力を入れ研究を行ってきたアスパラガスに関する研究について紹介しようと思う。現在、岡山大学では作物発育調節学研究室（旧花卉研究室）にて、種子系、栄養系花卉のセル成型苗の苗生産に関する研究という大きな研究テーマを与えられ奮闘努力している毎日である。花卉園芸学の分野ではまだ1年生であるため、現在の進行状況と今後の研究目的について簡略に紹介しようと思う。 kn-abstract=In order to establish a forcing culture system for asparagus using one-year-old crowns, the influences of cultivar, seed germination, crown size, soil temperature, male and female plants and the period of cold storage in relation to the date of bud sprouting and yield of spears were investigated. 'Hidel' spear yield was the highest among the five clutivars examined. Seed germination with sulphuric acid or polyethylene glycol treatment was rapid. The difference between yield from big crowns (mean weight:800g) and medium crowns (600g) was not significant;however,small crowns(400g) were not suitable for forced culture. The ratio of unmarketable spears was higher at a soil temperature of 25℃ than 20℃. Neither the ratio of the total number of spears to crown weight nor of spear yield to crown weight was significantly different between male and female plants. The number and yield of spears were not significantly affected by the length of the crown storage periods. en-copyright= kn-copyright= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 en-keyword=asparagus kn-keyword=asparagus en-keyword=one-year-old crown kn-keyword=one-year-old crown en-keyword=forcing culture kn-keyword=forcing culture en-keyword=sprouting kn-keyword=sprouting en-keyword=yield kn-keyword=yield END start-ver=1.4 cd-journal=joma no-vol=85 cd-vols= no-issue=1 article-no= start-page=31 end-page=37 dt-received= dt-revised= dt-accepted= dt-pub-year=1996 dt-pub=19960201 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Forcing Culture of Limonium sinuatum Mil. Using Cutting Plants kn-title=スターチス・シヌアータの挿し芽苗による促成栽培 en-subtitle= kn-subtitle= en-abstract=スターチス・シヌアータ(Limonium sinuatum Mill.)は、耐寒性の強い宿根草であるが、日本では栽培上秋まき一年生草として扱われている。スターチス・シヌアータは春化型の植物であり、一定期間の定温に遭遇した後、花茎を抽台として開花する6,8)。その後高温に遭遇すると脱春化して開花しないか、著しく開花が抑制される。Shilloは高温で生育した株はロゼットが破れず開花しなかったが、幼苗期を低温で経過した株は開花が著しく促進されることにより、開花には低温が必要であることを報告した9)。藤田は展開葉10枚程度の苗を1～2℃で40日間冷蔵すると抽台・開花が促進されることを明らかにした4)。また、吾妻らは、スターチス・シヌアータの催芽種子を2～3℃で30日間処理すると抽台・開花が促進され、種子発芽の段階でも定温に感応する種子春化型植物であることを明らかにした2)。しかし、冷蔵した苗も低温処理した種子もその後の高温で脱春化する2,4)。そこで吾妻・犬伏は種子低温処理と冷房育苗とを組み合わせ、脱春化を回避して10月から採花する栽培法を開発した3)。著者らは予備実験により、7月頃にまだ催花状態にある株から芽を取って挿し芽し、小苗で夏を越させると脱春化しないで開花し続け、10月中旬からの採花が可能であることを認めた。本実験ではスターチス・シヌアータの挿し芽苗による脱春化の防止について検討し、その結果をもとに早期促成栽培への基礎データを得ようとした。まず、採し芽の時期による脱春化防止の程度について調査し、次に7月中旬挿し芽苗の育苗方法について検討した。 kn-abstract=With the aim of preventing devernalization of statice (Limonium sinuatum Mill.) during summer in order to force the production of cut flowers harvestable from autumn, plants of cvs. 'La Mer' and 'Sunday Pink' were propagated by cuttings in late spring to late summer. Flowering stock plants were cut back thoroughtly, and after 15 days newly emerged vegetative buds were divided individually and rooted under intermittent mist. The rooted cuttings were planted in plastic pots and raised for 30 days followed by transplanting into wooden containers (36×60×D 18cm), 5 plants a container. During the two month's period after propagation, all emerging flower stalks were removed to allow a vigorous vegetative growth of plants. Plants propagated on 16 May, 15 June and 15 July, produced cut flowers starting from October, unlike those that were propagated on 14 August which did not flower until December. However, cut flowers of higher quality were mainly obtained from those plants that were propagated on 15 July. In addition, when the young propagated on 15 July were raised in the open field and under trees or in a cool house system, starting from October they produced more cut flowers that were of even higher quality than those raised in a plastic house. Only the plants that received water stress treatment during the potting stage flowered from November. There, from this forcing culture using cutting plants, marketable cut flowers of statice can be obtained from October without the usual requirement of low/cool temperature treatment. en-copyright= kn-copyright= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=1 ORCID= en-aut-name=YamatoChie en-aut-sei=Yamato en-aut-mei=Chie kn-aut-name=山登千恵 kn-aut-sei=山登 kn-aut-mei=千恵 aut-affil-num=2 ORCID= en-aut-name=KageyamaYoshihiro en-aut-sei=Kageyama en-aut-mei=Yoshihiro kn-aut-name=景山詳弘 kn-aut-sei=景山 kn-aut-mei=詳弘 aut-affil-num=3 ORCID= en-aut-name=KonishiKuniyoshi en-aut-sei=Konishi en-aut-mei=Kuniyoshi kn-aut-name=小西国義 kn-aut-sei=小西 kn-aut-mei=国義 aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 affil-num=2 en-affil= kn-affil=岡山大学 affil-num=3 en-affil= kn-affil=岡山大学 affil-num=4 en-affil= kn-affil=岡山大学 en-keyword=statice kn-keyword=statice en-keyword=cutting plant kn-keyword=cutting plant en-keyword=cutting time kn-keyword=cutting time en-keyword=raising method kn-keyword=raising method en-keyword=devernalization kn-keyword=devernalization END start-ver=1.4 cd-journal=joma no-vol=86 cd-vols= no-issue=1 article-no= start-page=43 end-page=49 dt-received= dt-revised= dt-accepted= dt-pub-year=1997 dt-pub=199702 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Effects of Root Zone Volume on the Growth of the Main and Latreal Shoot in Gypsophila paniculate L.,Dianthus caryophllus L.and Dendranthema grandiflora Kitamura. kn-title=根域容量がシュクコンカスミソウ、カーネーションおよびキクの主枝と側枝の生長に及ぼす影響 en-subtitle= kn-subtitle= en-abstract=根域容量がシュクコンカスミソウ、カーネーションおよびキクの主枝と摘心後の側枝の生長に及ぼす影響を調査するために、挿し穂を根域容量6,12,21,63ｃｍ3のセル成型トレイに挿し、発根後実験を開始した。同時に根域容量12cm3の挿し芽苗を根域容量38880cm3のコンテナ（対照区）に12株ずつ定植した。実験開始10日後に半数の個体を5節で摘心し、その後の側枝の伸長は調べた。茎長は3種とも実験終了後に根域容量により有意な差がみられ、根域容量が大きいほど長かった。カーネーションおよびキクでは実験開始20日後まで処理区間にはほとんど差がみられなかったが、シュクコンカスミソウでは実験開始10日後に根域容量が小さい区で茎長が小さかった。葉面積はシュクコンカスミソウおよびキクで根域容量が増加するほど有意に大きくなり、対照区で著しく大きかった。実験終了時の地上部、地下部では、根域容量が増加するにつれ重くなった。root:shoot比は根域容量に関わらずほとんど一定であった。摘心後、キクではどの根域容量でも各節の側枝が伸長した。シュクコンカスミソウ、カーネーションでは根域容量の増加につれ側枝数が増加した。根域容量が小さいほど側枝が伸長する節位は上位節に偏る傾向があった。側枝長、節数、総側枝重は根域容量の増加につれ有意に増加した。カーネーション、キクに比べシュクコンカスミソウは根域容量の影響を受けやすかった。3種ともセル成型トレイ苗生産には12～21cm3の根域容量が適当であると思われた。 kn-abstract=The effect of root zone volume on the growth of main and lateral shoot were studied for Gypsophila paniclulate L.,Dianthus caryophyllus L.and Dendranthema grandiflora Kitamura.Cell trays of four cell sizes(cell volume;6,12,21,63cm3)were used.One cutting was planted in each cell,and after rooting the experiments were srarted.At the same time twelve cuttings of each species rooted in 12cm3 cell were transplanted into wooden containers(38880cm3)for control.Ten days after the start of the experiments,half of the plants were pinched to investigate the growth of lateral shoots.In all the three spieces,the stem length was significantly increased with the increasing root zone volume.In Gypsophila this effect was observed after only 10 days,as compared with after 20 days in Dianthus and Dendranthema. The leaf area was highest for plants grown in the wooden container(control).Growing in small cells significiantly reduced the shoot and root dry weight.However,the root zone volume had little effect on the root :shoot ratio.The total number of lateral shoots,node number and total fresh weight were significantly increased with increases in root zone volume.In Dendranthema the lateral shoots had a srong tendency to elongate from almost all nedes even in the smallest root zone volume of 6cm3.In Gypsophila and Dianthus,the number of lateral shoots increased significantly with increases in the root zone volume.The strongest effect of root zone volume on main and lateral shoot growth was observed in Gypsophila.The results showed that in all the species,a root zone volume of 12~21cm3 was optimal for transplant production using cell trays. en-copyright= kn-copyright= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=1 ORCID= en-aut-name=KageyamaYoshihiro en-aut-sei=Kageyama en-aut-mei=Yoshihiro kn-aut-name=景山詳弘 kn-aut-sei=景山 kn-aut-mei=詳弘 aut-affil-num=2 ORCID= en-aut-name=KonishiKuniyoshi en-aut-sei=Konishi en-aut-mei=Kuniyoshi kn-aut-name=小西国義 kn-aut-sei=小西 kn-aut-mei=国義 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 affil-num=2 en-affil= kn-affil=岡山大学 affil-num=3 en-affil= kn-affil=岡山大学 en-keyword=root zone volume kn-keyword=root zone volume en-keyword=cell tray kn-keyword=cell tray en-keyword=vegetative propagation plant kn-keyword=vegetative propagation plant en-keyword=root : shoot ratio kn-keyword=root : shoot ratio en-keyword=lateral shoot number kn-keyword=lateral shoot number END start-ver=1.4 cd-journal=joma no-vol=87 cd-vols= no-issue=1 article-no= start-page=141 end-page=148 dt-received= dt-revised= dt-accepted= dt-pub-year=1998 dt-pub=199802 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Effects of Cold Storage Duration and Temperature of Transplants in Cell Flat on the Intial Growth of Dendranthema grandiflora Kitamura, Gypsophila paniculata L. and Dianthus caryophyllus L. kn-title=セル成型苗の低温貯蔵期間および温度がキク，シュッコンカスミソウおよびカーネーションの移植後の初期生育に及ぼす影響 en-subtitle= kn-subtitle= en-abstract=セル成型育苗における貯蔵温度と貯蔵期間がキク、シュッコンカスミソウおよびカーネーションの貯蔵中および移植後の生長に及ばす影響を調査した。それぞれの挿し穂を根域容量12mlのセル成型トレイに挿し、キクでは、挿し芽14日後、シュッコンカスミソウおよびカーネーションでは挿し芽20日後のセル苗を用いて、貯蔵温度を1,10℃,貯蔵期間を0,10,20,30日間とし、暗黒条件下で実験を行った。貯蔵終了後、木箱に移植し、30日後に収穫した。キクでは貯蔵期間が長くなるにつれ、移植30日後の生育の低下がみとめられた。10℃30日間貯蔵より、1℃30日間貯蔵で移植直後のプラストクロンインデックスの増加割合が低下した。シュッコンカスミソウでは、10℃で貯蔵すると貯蔵中に節数、茎長の増加がみられたが、1℃貯蔵ではほとんど変わらなかった。10℃で30日間貯蔵すると下位葉が枯れ、徒長しているのが認められた。1℃30日間貯蔵した苗もわずかに黄緑化した。1℃10℃で30日間貯蔵した苗の移植30日後の生存率はそれぞれ90％および50％であった。カーネーションでは貯蔵期間が長くなると10℃貯蔵で節数、茎長が増加した。1℃20日間および30日間貯蔵すると、移植30日後の側枝数が減少した。キク、カーネーションに比べ、シュッコンカスミソウでは貯蔵温度や貯蔵期間の影響を受けやすかった。キクおよびカーネーションのセル苗の暗黒条件下で貯蔵可能な期間は1,10℃貯蔵とも30日以上であっが、シュッコンカスミソウでは1℃貯蔵で20～30日、10℃貯蔵で20日であった。3種とも1℃で30日間低温貯蔵すると、移植後に生育が停滞し、生育を開始するまでにタイムラグが生じた。 kn-abstract=Experiments were conducted to determine the effects of cold storage duration and temperature of transplants in cell flat on the initial growth of Dendranthema grandiflora Kitamura, Gypsophila paniculata L. and Dianthus caryophyllus L. Cuttings were grown in 220 cell trays (cell volume 12 ml). The 14 days old transplants of Dendranthema and 20 days old Gypsophila and Dianthus were stored for 0,10,20 and 30 days at 1℃ and 10℃ under dark conditions. After storage the plants were transplanted into wooden containers and harvested 30 days after transplanting. In Dendranthema, the growth during the 30 days after transplant decreased with increasing storage duration. After 30 days from transplant, the increasing rate of plastchlon index of transplants stored for 30 days at 1℃ decreased compared with those stored at 10℃. IN Gypsophila, node number and stem length increased during storage at 10℃, but not at 1℃. When stored for 30 days at 10℃, the lower leaves of transplants were dead and the transplants were excessively elongated. After 30 days from transplant, the survival rate of transplants stored for 30 days at 1℃ and 10℃ was 90% and 50%, respectively. In Dianthus, node nunber and stem length of transplants stored at 10℃ increased with increasing storage duration. After 30 days from transplant, the lateral shoot number of transplants stored for 20 and 30 days at 1℃ decreased. Compared with Dendranthema and Dianthus, the growth after transplanting of Gypsophila was considerrably affected by cold storage duration and temperature. Dendranthema and Dianthus could be stored successfully for 30 days at 1℃ and 10℃ under darkness, and Gypsophila for 20 days at 1℃ and 10℃. In all the species, when stored for 30 days at 1℃, growth after transplanting stopped temporarily and a time lag was observed for several days until the growth was restarted. en-copyright= kn-copyright= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=1 ORCID= en-aut-name=MasaokaKeishi en-aut-sei=Masaoka en-aut-mei=Keishi kn-aut-name=正岡啓史 kn-aut-sei=正岡 kn-aut-mei=啓史 aut-affil-num=2 ORCID= en-aut-name=KageyamaYoshihiro en-aut-sei=Kageyama en-aut-mei=Yoshihiro kn-aut-name=景山詳弘 kn-aut-sei=景山 kn-aut-mei=詳弘 aut-affil-num=3 ORCID= en-aut-name=KonishiKuniyoshi en-aut-sei=Konishi en-aut-mei=Kuniyoshi kn-aut-name=小西国義 kn-aut-sei=小西 kn-aut-mei=国義 aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 affil-num=2 en-affil= kn-affil=岡山大学 affil-num=3 en-affil= kn-affil=岡山大学 affil-num=4 en-affil= kn-affil=岡山大学 en-keyword=cold storage kn-keyword=cold storage en-keyword=dark conditions kn-keyword=dark conditions en-keyword=vegetative propagation plant kn-keyword=vegetative propagation plant en-keyword=time lag kn-keyword=time lag en-keyword=shoot elongation kn-keyword=shoot elongation END start-ver=1.4 cd-journal=joma no-vol=88 cd-vols= no-issue=1 article-no= start-page=47 end-page=55 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=199902 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Effects of Cell Volume and Transplant Age in Cell Flat on Growth and Flowering after Transplanting in Antirrhinum majus L.and Initial Growth after Transplanting in Matthiola incana R.Br. kn-title=セル苗育苗におけるセル容量および移植時苗齢がキンギョソウの移植後の生長と開花ならびにストックの移植後の初期生長に及ぼす影響 en-subtitle= kn-subtitle= en-abstract=促成栽培したイチゴ’女峰’の’成り疲れ’と同時に発生する受精不良による奇形果発生要因を明らかにするため、イチゴ生産者の15棟のビニルハウスの花粉稔性の変化を調査し、気象要因、葉中無機養分および炭水化物濃度との関係について解析した。花粉稔性は、気温、日射量が低下し、着果負担が増大する1,2月に急激に低下したことから、奇形果発生の原因が花粉稔性の低下にあることが示された。花粉稔性と開花前1～3日の日射量、当日の戸外の最低気温、葉中炭水化物濃度との間に高い相関が認められなかった。CO2施肥によって腋果房収穫開始期（1月）の花粉稔性が高まったことから、低日射と過重な着果負担による光合成産物不足が花粉稔性低下の大きな原因であると考えられた。 kn-abstract=Effects of Cell Volume and Transplant Age in Cell Flat on Growth and Flowering after Transplanting in Antirrhinum majus L.cv.Mangetsu and initial growth after transplanting in Matthiola incana R.Br.cv.White Dorse were studied.Seeds were sownin flats of two cell sizes (cylinders,448 and 220;volume6,12ml,respectively).At the same time each species were directly sown into wooden containers(38880ml). The plants in cells were transplanted 32,37,42,47,52days old after sowing in A.majus and 18,25,32,39days old in M.incana. The plants having formed root-balls could be found at 42 days and 47days after sowing in cell volume of 6ml and 12ml respectively in A.majus.,and at 25days and 32days after sowing in cell volume of 6ml and 12ml respectively in M.incana.In both species shoot dry weight,root dry weight,stem length,node number and total leaf area were increaced with increaces in cell volume or transplant age.In A.majus flowering was delayed with increases in transplant age,especially in cell volume of 6ml.Cut flower quality suffered markedly with increaces in transplant age. Node number was affected by cell volume but not by transplant age.In M.incana the growth 4weeks after transplanting of plants grown for 25days in cell volume of 12ml showed little difference compared with that of plants grown in the wooden container. The results showed that for cell transplant production in both species,transplanting before 10days formde root-balls using cell volume of 12ml was optimal.Our investigation suggests that the suitable transplant age for work efficiency of transplanting may differ considerably from that for plant growth in both species. en-copyright= kn-copyright= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=1 ORCID= en-aut-name=KageyamaYoshihiro en-aut-sei=Kageyama en-aut-mei=Yoshihiro kn-aut-name=景山詳弘 kn-aut-sei=景山 kn-aut-mei=詳弘 aut-affil-num=2 ORCID= en-aut-name=KonishiKuniyoshi en-aut-sei=Konishi en-aut-mei=Kuniyoshi kn-aut-name=小西国義 kn-aut-sei=小西 kn-aut-mei=国義 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 affil-num=2 en-affil= kn-affil=岡山大学 affil-num=3 en-affil= kn-affil=岡山大学 en-keyword=cell volume kn-keyword=cell volume en-keyword=transplant age kn-keyword=transplant age en-keyword=root-balls kn-keyword=root-balls en-keyword=cut flower quality kn-keyword=cut flower quality en-keyword=dwarf plant kn-keyword=dwarf plant END start-ver=1.4 cd-journal=joma no-vol=21 cd-vols= no-issue= article-no= start-page=15 end-page=17 dt-received= dt-revised= dt-accepted= dt-pub-year=1999 dt-pub=19990327 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=貯蔵温度および植物生長調節物質がモモイロカイウ‘レーマニー’の開花ならびに切り花品質に及ぼす影響 en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=高田圭太 kn-aut-sei=高田 kn-aut-mei=圭太 aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 affil-num=2 en-affil= kn-affil=岡山大学 END start-ver=1.4 cd-journal=joma no-vol=23 cd-vols= no-issue= article-no= start-page=16 end-page=18 dt-received= dt-revised= dt-accepted= dt-pub-year=2001 dt-pub=20010330 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=挿し芽日がシュッコンカスミソウの一番花および二番花の収穫と切り花品質に及ぼす影響 en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=高田圭太 kn-aut-sei=高田 kn-aut-mei=圭太 aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 affil-num=2 en-affil= kn-affil=岡山大学 END start-ver=1.4 cd-journal=joma no-vol=92 cd-vols= no-issue=1 article-no= start-page=27 end-page=30 dt-received= dt-revised= dt-accepted= dt-pub-year=2003 dt-pub=200302 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Relationships between Plant Size and Amount of Overhead Irrigation Required for Uniform Water Supply to Individual Cell Medium kn-title=セル培地に必要な散水量と植物体の大きさの関係 en-subtitle= kn-subtitle= en-abstract=セル育苗における灌水方法として用いられている頭上散水法の問題点を明らかにするため，実際の苗生産施設において，ブーム式の頭上散水装置による育苗ベンチ内の散水むらを調べた．また，苗齢（23，42日齢区）の異なるストックセル苗に散水ノズルによって散水（１/２セルトレイあたり０，150，300，450）した場合のセルごとの水分吸収量の変動を調べた．ブーム式の頭上散水装置による散水量は，ノズルからの散水の重なり程度によって大きく異なり，散水量の最大値は最小値の約２倍であった．ブームの中央部においても散水量にばらつきがみられ，最大30%程度異なった．均一な散水を行った場合であっても，セルで植物が生育している場合には，散水量が少ないほどセルあたりの灌水量の変動が大きくなった．また，植物体（葉面積）が大きいほど，変動が大きくなった．以上のことから，頭上散水法ですべてのセルに必要量散水するには，蒸発散量の２倍以上の散水が必要と推定され，セル育苗の灌水自動化にあたっては，灌水の均一化，養水分の利用効率の面から，頭上散水法より底面給水法を採用することが望ましいと考えられた． kn-abstract=In order to clarify the problems with overhead irrigation systems for cell transplant production, uniformity of water supply by a boom spraying system was investigated. Furthermore, uneven water soaking into individual cell medium caused by plant cover growing in such cells was investigated. The amount of water supply from a boom spraying system varied considerable with the arrangement of the nozzles. Although a larger number of nozzles was set on the boom, the maximum amount of supplied water in the central part of the boom was about twice as much as that at each end of the boom. When no plant was grown in the cells, uniform water supply to individual cell mudium was obtained by a downright sprinkler system. However, when stock (Matthiola incana R. Br.) plants were grown in cells, variation in the amount of water soaking into the medium increased noticeably with increase in the plant size growing in the cells and with a decrease in the amount of supplied water. Plant covers with overlapped leaves may disturb the uniformity in the amount of water soaked into individual cell medium. As twice the water consumption may be required for uniform water supply into individual cell medium with an overhead irrigation system, a subirrigation system may be desirable for economical and ecological automatic irrigation to produce cell transplants on a large scale. en-copyright= kn-copyright= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=1 ORCID= en-aut-name=YoshidaYuichi en-aut-sei=Yoshida en-aut-mei=Yuichi kn-aut-name=吉田裕一 kn-aut-sei=吉田 kn-aut-mei=裕一 aut-affil-num=2 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 affil-num=2 en-affil= kn-affil=岡山大学 en-keyword=automatic irrigation kn-keyword=automatic irrigation en-keyword=boom spraying kn-keyword=boom spraying en-keyword=cell transplant production kn-keyword=cell transplant production en-keyword=overlapped leaves kn-keyword=overlapped leaves en-keyword=uneven water soaking kn-keyword=uneven water soaking END start-ver=1.4 cd-journal=joma no-vol=93 cd-vols= no-issue=1 article-no= start-page=33 end-page=37 dt-received= dt-revised= dt-accepted= dt-pub-year=2004 dt-pub=200402 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Characteristics of Seasonal Water Consumption of Spray Chrysanthemums in Bench Culture kn-title=スプレーギクのベンチ栽培における季節別の水消費特性 en-subtitle= kn-subtitle= en-abstract= kn-abstract=Changes in water consumption (WC) from planning to harvest of spray chrysanthemum in bench culture were measured all the year round and the relationship between WC and environmental factors(solar radiation;SR and air temperature;AT) and leaf area (LA) were analyzed. Seasonal change in total water consumption (TWC) and average water consumption per day were about 4 and 5 fold, respectivily. WC tended to increase with increasing growth. When the yearly data were pooled, WC was positively corrected with SR and LA. The regression line between WC (y: ml/shoot/day), SR(x1: MJ/m2/day) and LA (x2: cm2/shoot) was expressed as follows;y=14.44x1 + 0.13x2 - 114.55(R2=0.77). Moreover, LA was expressed by two lines at 2 weeks after visible bud in each planting time. Thus, it seems that seasonal TWC and apparent concentration nutrient absorption can be estimated from these regression lines and the common year value of SR. en-copyright= kn-copyright= en-aut-name=ShimaKohji en-aut-sei=Shima en-aut-mei=Kohji kn-aut-name=島浩二 kn-aut-sei=島 kn-aut-mei=浩二 aut-affil-num=1 ORCID= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=2 ORCID= en-aut-name=KageyamaYoshihiro en-aut-sei=Kageyama en-aut-mei=Yoshihiro kn-aut-name=景山詳弘 kn-aut-sei=景山 kn-aut-mei=詳弘 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=和歌山県農林水産総合技術センター農業試験場 affil-num=2 en-affil= kn-affil=岡山大学 affil-num=3 en-affil= kn-affil=岡山大学 en-keyword=leaf area kn-keyword=leaf area en-keyword=solar radiation kn-keyword=solar radiation en-keyword=spray chrysanthemum kn-keyword=spray chrysanthemum en-keyword=water consumption kn-keyword=water consumption END start-ver=1.4 cd-journal=joma no-vol=94 cd-vols= no-issue=1 article-no= start-page=15 end-page=18 dt-received= dt-revised= dt-accepted= dt-pub-year=2005 dt-pub=20050201 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Effect of Medium and Planting Data on the Occurrence of Leaf-yellow-spot in Chrysanthemum 'Seikounomakoto' kn-title=培地および定植期がキク‘精興の誠’の黄斑発生に及ぼす影響 en-subtitle= kn-subtitle= en-abstract= kn-abstract=Effects of medium and planting data on the occurrence of leaf-yellow-spot in chrysanthemum 'Seikounomakoto' Dendranthema grandiflora Kitamura were investigated. Long duration was required until occurrence of leaf yellow-spot. Moreover, advance of leaf-yellow-spot was slow. The occurrence of leaf-yellow-spot was remarkably increased by sandy loam soil, but decreased by peatmoss and sand medium. Regardless of medium, pattern of occurrence of leaf-yellow-spot was similar. The occurrence of leaf-yellow-spot was attected by planting date, and was remarkably increased by high temperature and irradiation, but decreased by low temperature affected the occurence of leaf-yellow-spot en-copyright= kn-copyright= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=1 ORCID= en-aut-name=OkiAkinori en-aut-sei=Oki en-aut-mei=Akinori kn-aut-name=沖章紀 kn-aut-sei=沖 kn-aut-mei=章紀 aut-affil-num=2 ORCID= en-aut-name=KageyamaYoshihiro en-aut-sei=Kageyama en-aut-mei=Yoshihiro kn-aut-name=景山詳弘 kn-aut-sei=景山 kn-aut-mei=詳弘 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 affil-num=2 en-affil= kn-affil=岡山大学 affil-num=3 en-affil= kn-affil=岡山大学 en-keyword=environmental factors kn-keyword=environmental factors en-keyword=irradiation kn-keyword=irradiation en-keyword=leaf-yellow-spot kn-keyword=leaf-yellow-spot en-keyword=medium kn-keyword=medium en-keyword=temperature kn-keyword=temperature END start-ver=1.4 cd-journal=joma no-vol=94 cd-vols= no-issue=1 article-no= start-page=19 end-page=24 dt-received= dt-revised= dt-accepted= dt-pub-year=2005 dt-pub=20050201 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=A Novel Fertigation Technology developed for Spray Chrysanthemums in Bench Culture Based on Apparent Nutrient Uptake Concentration kn-title=スプレーギクのベンチ栽培における見かけの養分吸収濃度に基づいた灌水同時施肥栽培法の開発 en-subtitle= kn-subtitle= en-abstract= kn-abstract=To develop a simple and rational fertigation technology of spray chrysanthemum in bench culture, the effects of fertigation method by apparent nutrient uptake concentration (ANUC) on growth and cut flower quality were investigated. Twenty-five percentage of the total nitrogen application amount (267mg/shoot) was fertilized as basal fertilizer before planting. The ohter was fertilized by the following four methods after pinching. The other elemental nutrients were applied in proportion to nitrogen. 1) Fixed quantity: an equal amount of nitrogen was fertilized every week. Moreover, water was applied so as not to leach through the bench when pF value is more than 1.8. 2) Fixed time: liquid fertilizer by ANUC was applied everyday at 8 a.m. The applied quantities on every growth stage were calculated based on former water consumption. 3) pF: liquid fertilizer by ANUC was applied so as not leach through the bench when pF value is more than 1.8. 4) Fixed time and pF: liquid fertilizer by twice ANUC was applied everyday at 8 a.m. Moreover, water was applied so as not to leach through the bench when pF value was more than 1.8. Incontract, 5) Manual: liquid fertilizer by the fertigation manual for field was applied. Total nitrogen application was 357 mgN per plant. The growth and cut flower quality were good regardless of fertigation method. Total nitrogen application amount was approximately 267mg per plant in Fixed quality, Fixed time, pF plots and Fixed Time and pF plot. However, 19 mg and 100 mgN per plant in order to leaching run off through the bench on Fixed time plot and Manual plot, respectively. Usually pF value changed between 1.5 and 2.0 during growing period in Fixed quantity, pF plots and Fixed time and pF plot. On the other hand pF value during late growth reached more than 2.0 in Fixed time and Manual plot, and strong water stress occured. en-copyright= kn-copyright= en-aut-name=ShimaKohji en-aut-sei=Shima en-aut-mei=Kohji kn-aut-name=島浩二 kn-aut-sei=島 kn-aut-mei=浩二 aut-affil-num=1 ORCID= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=2 ORCID= en-aut-name=KageyamaYoshihiro en-aut-sei=Kageyama en-aut-mei=Yoshihiro kn-aut-name=景山詳弘 kn-aut-sei=景山 kn-aut-mei=詳弘 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=和歌山県農林水産総合技術センター農業試験場 affil-num=2 en-affil= kn-affil=岡山大学 affil-num=3 en-affil= kn-affil=岡山大学 en-keyword=apparent nutrient uptake concentration kn-keyword=apparent nutrient uptake concentration en-keyword=bench culture fertigation technology kn-keyword=bench culture fertigation technology en-keyword=spray chrysanthemum kn-keyword=spray chrysanthemum END start-ver=1.4 cd-journal=joma no-vol=95 cd-vols= no-issue=1 article-no= start-page=29 end-page=34 dt-received= dt-revised= dt-accepted= dt-pub-year=2006 dt-pub=200602 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Effects of Irrigation Methods on the Growth of Petunia Grown in Heat Fusion Polyester Fiber Hardened Medium without Polythylene Pot kn-title=熱融着性ポリエステル繊維固化ポットレス培地で育成したペチュニアの生育に及ぼす灌水方法の影響 en-subtitle= kn-subtitle= en-abstract= kn-abstract=Recenty, polyethylene pots(PP) present a significant environmental issue for waste disposal. To develop bedding plant production system without PP, properties of compacted medium hardened by heat fusion polyester fiber were investigated. Effects of irrigation methods on the growth of vegetative propagated petunia grown in medium without PP were investigated. The effect of medium type was not as significant as the difference in water loss per pot. Water loss per pot of medium without PP was about two times greater than medium held in PP. No compacted medium disintegrated easily without root-ball formation, and in 20 days after cutting about half of non-compacted medium had disintegrated. Compacted medium did not disintegrate before rooting. Medium type did not significantly affect rooting rates, plant heights, leaf numbers and fresh weights when transplanted to medium. Also, cell or pot medium type did not significantly affect plant heights, flower numbers, leaf numbers and fresh weights. Non-compacted medium without PP easily disintegrated with overhead irrigation. Subirrigation and much overhead irrigation had similar effect on growth when planted in containers.However, less overhead irrigation had significantly lower growth. Moreover, in less overhead irrigation, non-compacted medium without PP had remarkably lower growth than compacted medium without PP. In, conclusions, compacted medium without PP did not affect the growth of bedding plants whenever water and nutrient regime was well regulated. Compacted pot medium was easy to transplant since it did not disintegrate. Therefore, it was considered practical and feasible to use compacted medium without PP for bedding plant production. en-copyright= kn-copyright= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=1 ORCID= en-aut-name=ShimaKohji en-aut-sei=Shima en-aut-mei=Kohji kn-aut-name=島浩二 kn-aut-sei=島 kn-aut-mei=浩二 aut-affil-num=2 ORCID= en-aut-name=AzumaChisato en-aut-sei=Azuma en-aut-mei=Chisato kn-aut-name=東千里 kn-aut-sei=東 kn-aut-mei=千里 aut-affil-num=3 ORCID= en-aut-name=MorishitaTeruhisa en-aut-sei=Morishita en-aut-mei=Teruhisa kn-aut-name=森下照久 kn-aut-sei=森下 kn-aut-mei=照久 aut-affil-num=4 ORCID= en-aut-name=FujiiKazunori en-aut-sei=Fujii en-aut-mei=Kazunori kn-aut-name=藤井一徳 kn-aut-sei=藤井 kn-aut-mei=一徳 aut-affil-num=5 ORCID= en-aut-name=MotookaShigeharu en-aut-sei=Motooka en-aut-mei=Shigeharu kn-aut-name=元岡茂治 kn-aut-sei=元岡 kn-aut-mei=茂治 aut-affil-num=6 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 affil-num=2 en-affil= kn-affil=和歌山県農林水産総合技術センター農業試験場 affil-num=3 en-affil= kn-affil=岡山大学 affil-num=4 en-affil= kn-affil=みのる産業(株)植物工学研究所 affil-num=5 en-affil= kn-affil=みのる産業(株)植物工学研究所 affil-num=6 en-affil= kn-affil=みのる産業(株)植物工学研究所 en-keyword=bedding plant kn-keyword=bedding plant en-keyword=heat fusion polyester fiber kn-keyword=heat fusion polyester fiber en-keyword=irrigation methods kn-keyword=irrigation methods en-keyword=polyethylene pot kn-keyword=polyethylene pot en-keyword=water usage kn-keyword=water usage END start-ver=1.4 cd-journal=joma no-vol=96 cd-vols= no-issue=1 article-no= start-page=43 end-page=48 dt-received= dt-revised= dt-accepted= dt-pub-year=2007 dt-pub=200702 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=液肥濃度と無機養分がキクの黄斑発生に及ぼす影響 kn-title=Effect of Nutrient Levels and Mineral Composition on the Occurrence of Yellow-leaf-spot in Chrysanthemum en-subtitle= kn-subtitle= en-abstract=９月から10月収穫の作型のキク（Chrysanthemum×morifolium）の葉身で発生する黄斑は水ストレス，高温，強日射，養分ストレスが発生要因として考えられている．本実験では無機養分の濃度，バランスが黄斑の発生に及ぼす影響を調査した．'精興の誠'を５種類の濃度の液肥（園試処方Ｎ０，60，120，180，240，300 ppm）で栽培した場合，液肥濃度が高くなるにつれ，黄斑が発生する範囲，程度共に増大する傾向が見られた．'精興の誠'と'精興の勝'に園試処方１/３濃度を基準とし，Ｎ，Ｐ，Ｋ，Ca，Mg，Fe それぞれを基準の３倍になるように作成した液肥を３または14日間与えた場合，'精興の勝'では黄斑発生は見られなかった．'精興の誠'では黄斑発生は見られたが，発生範囲，発生度ともに処理の影響は見られなかった．また，それぞれの無機養分を欠如させた液肥を作成し10日間与えた場合も黄斑発生に影響は見られなかった．これらの結果から，黄斑発生には遺伝的要因が関与しており，特定の無機養分の過不足により引き起こされるものではないと考えられた． kn-abstract=　Yellow-leaf-spot, a physiological abnormality occurring in leaves of several chrysanthemum (Chrysanthemum ×morifolium) cultivars harvested from September to October, is a very serious problem in Japan, of which causes have not been well established. Water stress, high temperature, high irradiation or nutrient stresses are possible physiological factors which may lead to yellow-leaf-spot. In the present study, effects of nutrient levels and mineral composition on the occurrence of yellow-leaf-spot were investigated. ‘Seikou-no-makoto’ and ‘Seikou-no-masaru’ plants were grown in 5 nutrient solutions (N 0, 60, 120, 180, 240 ppm based on Enshi-shoho). In ‘Seikou-no-masaru’ no yellow-leaf-spot occurred. However, in ‘Seikou-no-makoto’, the nodal position with spotted leaves and rate of yellow-leaf-spot increased as nutrient levels increased. ‘Seikou-no-makoto’ plants were supplied with 6 different nutrient solutions containing 3 times N, P, K, Ca, Mg or Fe in 1/3 concentration of Enshi-shoho solution for 3 or 14 days. The nodal position with spotted leaves and rate of yellow-leaf-spot was not affected by mineral composition. The nodal position with spotted leaves and rate of yellow-leaf-spot increased with increasing days of application. Both cultivare were supplied with 7 different nutrient solutions with lacked N, P, K, Ca, Mg, Fe or only microelement (no mineral) in 1/2 Enshi-shoho solution for 10 days. In ‘Seikou-no-masaru’, no yellow-leaf-spot occurred. It occurred only in ‘Seikou-nomakoto’. yellow-leaf-spot occurred in control, P, K, Ca, Mg, Fe deficiency and no mineral, but only slightly in all cases. These results suggest that the occurrence of yellow-leaf-spot was dependent on genotype, and that excessive or deficiency specific elemental mineral stress had no significant effect. en-copyright= kn-copyright= en-aut-name=OkiAkinori en-aut-sei=Oki en-aut-mei=Akinori kn-aut-name=沖章紀 kn-aut-sei=沖 kn-aut-mei=章紀 aut-affil-num=1 ORCID= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=2 ORCID= en-aut-name=NagasugaKaori en-aut-sei=Nagasuga en-aut-mei=Kaori kn-aut-name=長菅香織 kn-aut-sei=長菅 kn-aut-mei=香織 aut-affil-num=3 ORCID= en-aut-name=YamasakiAtsushi en-aut-sei=Yamasaki en-aut-mei=Atsushi kn-aut-name=山崎篤 kn-aut-sei=山崎 kn-aut-mei=篤 aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 affil-num=2 en-affil= kn-affil=岡山大学 affil-num=3 en-affil= kn-affil=岡山大学 affil-num=4 en-affil= kn-affil=岡山大学 en-keyword=EC kn-keyword=EC en-keyword=Genotype kn-keyword=Genotype en-keyword=Nutrient deficiency kn-keyword=Nutrient deficiency en-keyword=Nutrient excess kn-keyword=Nutrient excess en-keyword=pH kn-keyword=pH END start-ver=1.4 cd-journal=joma no-vol=96 cd-vols= no-issue=1 article-no= start-page=37 end-page=42 dt-received= dt-revised= dt-accepted= dt-pub-year=2007 dt-pub=200702 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Growth, Yield and Fruit Quality of Tomato as Affected by Root Zone Restriction in Combination with Solar-mediated Fertigation Regime kn-title=根域容量と日射比例給液制御による給液量がトマトの生育・収量と果実品質に及ぼす影響 en-subtitle= kn-subtitle= en-abstract= kn-abstract=　Plant growth and fruit development of tomato (Lycopersicon esculentum Mill. cv. House Momotaro) grown in different sized plastic pots (root zone volume, RZV, of 250, 500, 1,000 mL/plant) in combination with high or low rate of drip fertigation (HF and LF) were investigated. In the February-sown experiment, the plants were fertigated with standard to half strength of Ohtsuka-A solution in proportion to solar radiation keeping the ratio of drainage to supplied solution as 10 to 20ｵ, in 500mL- and 250mL-RZV for HF and LF, respectively. Stem and leaf growth decreased with decrease in RZV and the fertigation rate. The decreases were not significant in the distal plant part lower than the 4th inflorescence. The average fruit weight was greater in HF than LF and increased with increase in RZV only for HF. The incidence of blossom-end rot (BER) was more frequent in HF compared to LF and increased with increase in RZV only for LF. Consequently, fruit yield increased with increase in RZV for HF, but it decreased with increase in RZV for LF. Total soluble solid content (TSS) was significantly higher in LF than in HF and increased with decrease in RZV. Qualified fruits, called ‘fruit tomato’ having 8ｵ of TSS or higher, were obtained with 250 to 500mL of RZV in the successive October-sown experiment where the standard solution was supplied throughout. For ‘fruit tomato’ production with a substrate culture system, root zone restriction, in combination with solar-mediated fertigation control, can be a useful and stable stress factor, reducing shoot and fruit growth, but inducing fruit sugar accumulation and reducing BER incidence simultaneously. en-copyright= kn-copyright= en-aut-name=YoshidaYuichi en-aut-sei=Yoshida en-aut-mei=Yuichi kn-aut-name=吉田裕一 kn-aut-sei=吉田 kn-aut-mei=裕一 aut-affil-num=1 ORCID= en-aut-name=MatsunoTaiki en-aut-sei=Matsuno en-aut-mei=Taiki kn-aut-name=松野太樹 kn-aut-sei=松野 kn-aut-mei=太樹 aut-affil-num=2 ORCID= en-aut-name=ShingaiAya en-aut-sei=Shingai en-aut-mei=Aya kn-aut-name=新開礼 kn-aut-sei=新開 kn-aut-mei=礼 aut-affil-num=3 ORCID= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 affil-num=2 en-affil= kn-affil=岡山大学 affil-num=3 en-affil= kn-affil=岡山大学 affil-num=4 en-affil= kn-affil=岡山大学 en-keyword=blossom-end rot kn-keyword=blossom-end rot en-keyword=drip fertigation kn-keyword=drip fertigation en-keyword=fruit tomato kn-keyword=fruit tomato en-keyword=Lycopersicon esculentum Mill kn-keyword=Lycopersicon esculentum Mill END start-ver=1.4 cd-journal=joma no-vol=97 cd-vols= no-issue=1 article-no= start-page=61 end-page=67 dt-received= dt-revised= dt-accepted= dt-pub-year=2008 dt-pub=200802 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Effects of Medium Shape, Fertilization Methods and Plant Density on the Growth of Pansy Grown in Medium Hardened by Heat Fusion Polyester Fiber without Polyethylene Pot kn-title=培地の形状，施肥方法，栽植密度が熱融着性ポリエステル繊維固化ポットレス培地で育てたパンジーの生育に及ぼす影響 en-subtitle= kn-subtitle= en-abstract=固化培地を利用したポリポットを用いないポットレス栽培において，潅水効率の上昇，施肥の簡易化，藻の発生抑制のため，培地の形状，施肥方法および栽植密度がパンジーの生育に及ぼす影響について検討した．9㎝角のポット型培地に6×6×深さ3㎝のくぼみ（ウォータースペース）を培地上部に作成すると，栽培前期の水供給量（灌水後の重量―灌水前の重量）が約10～25% に多くなった．しかし，栽培中期から後期にかけてはその違いは次第に小さくなり，特に曇雨天時には水供給量に差はみられなくなった．ウォータースペースの有無にかかわらず，ポリポットがあると生育に違いは認めらなかったが，ポットレス区ではウォータースペースによって生育が改善された．元肥量10ｇ/liter 区では生育初期に高濃度障害と思われる症状が見られ，5ｇ/liter 区より生育が抑制された．栽植密度を半分にしたスペーシングによって，草丈はかなり抑制された．スペーシングなしの場合にはポットの有無による差は小さかったが，ポットレス栽培の生育がスペーシング栽培でかなり改善された．ポットレス・スペーシング有・灌水量120ml区の生育が最も旺盛であった．養分量が多いほど灌水量が多いほど，藻の発生が大であったが，スペーシングとポットレスを組み合わせると藻の発生が改善された． kn-abstract=To develop bedding plant production system without polyethylene pots (PP), problems that may be encountered with compacted medium hardened by heat fusion polyester fiber were investigated. Effects of medium shape, fertilization methods and plant density on the growth of pansy in medium without PP were investigated. To improve water usage on compacted medium, a watering space (6×6×depth 3cm) was made on the upper part of the compacted medium (9×9×depth 9cm). In the early stages of the experiment the amount of water supplied per pot (weight after irrigation-weight before irrigation) of medium with water space was 10–25% greater than that of medium without a water space. However, from the mid to late stages of the experiment, the difference gradually declined. The amount of water supplied per pot was similar between with and without water space especially on cloudy or rainy days. The growth of pansies on medium without PP was remarkably greater with water space than without water space. On 10g/liter basal fertilizer treatment, pansies had severe symptoms of fertilizer damage. The growth of pansy on 10g/liter basal fertilizer was inhibited compared to that of 5g/liter basal fertilizer. Spacing treatment was conducted whenever plant density was half. Height of pansy grown with spacing treatment was significantly lower than that without spacing treatment. PP had no effects on growth when pansy was grown without spacing treatment. However, when pansy was grown with spacing treatment, pansy grown without PP had significantly greater growth than with PP. Algal growth on the medium increased with increasing irrigation rate or nutrient rate. Combination of spacing treatment and medium without PP decreased the rate of algal growth on medium. en-copyright= kn-copyright= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=1 ORCID= en-aut-name=OohashiYuji en-aut-sei=Oohashi en-aut-mei=Yuji kn-aut-name=大橋佑司 kn-aut-sei=大橋 kn-aut-mei=佑司 aut-affil-num=2 ORCID= en-aut-name=ShimizuNozomi en-aut-sei=Shimizu en-aut-mei=Nozomi kn-aut-name=清水希 kn-aut-sei=清水 kn-aut-mei=希 aut-affil-num=3 ORCID= en-aut-name=MorisitaTeruhisa en-aut-sei=Morisita en-aut-mei=Teruhisa kn-aut-name=森下照久 kn-aut-sei=森下 kn-aut-mei=照久 aut-affil-num=4 ORCID= en-aut-name=FujiiKazunori en-aut-sei=Fujii en-aut-mei=Kazunori kn-aut-name=藤井一徳 kn-aut-sei=藤井 kn-aut-mei=一徳 aut-affil-num=5 ORCID= en-aut-name=IshikawaJunya en-aut-sei=Ishikawa en-aut-mei=Junya kn-aut-name=石川順也 kn-aut-sei=石川 kn-aut-mei=順也 aut-affil-num=6 ORCID= en-aut-name=ShimaKohji en-aut-sei=Shima en-aut-mei=Kohji kn-aut-name=島浩二 kn-aut-sei=島 kn-aut-mei=浩二 aut-affil-num=7 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 affil-num=2 en-affil= kn-affil=岡山大学 affil-num=3 en-affil= kn-affil=岡山大学 affil-num=4 en-affil= kn-affil=みのる産業(株)植物工学研究所 affil-num=5 en-affil= kn-affil=みのる産業(株)植物工学研究所 affil-num=6 en-affil= kn-affil=兵庫県立農林水産技術総合センター affil-num=7 en-affil= kn-affil=和歌山県農林水産総合技術センター農業試験場 en-keyword=algal kn-keyword=algal en-keyword=bedding plant kn-keyword=bedding plant en-keyword=spacing kn-keyword=spacing en-keyword=water usage kn-keyword=water usage en-keyword=watering space kn-keyword=watering space END start-ver=1.4 cd-journal=joma no-vol=98 cd-vols= no-issue=1 article-no= start-page=17 end-page=22 dt-received= dt-revised= dt-accepted= dt-pub-year=2009 dt-pub=200902 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Effect of Combination of Overhead Irrigation and Subirrigation on the Growth of Bedding Plants Grown in Polyester Fiber Medium Hardened by Heat Fusion, without use of Polyethylene Pots kn-title=頭上灌水と底面灌水の組み合わせが熱融着性ポリエステル繊維固化 ポットレス培地で育てた花壇苗の生育に及ぼす影響 en-subtitle= kn-subtitle= en-abstract=熱融着性ポリエステル繊維固化培地を利用したポットレス花壇苗生産における灌水方法として，水受けトレイを用いた頭上灌水（頭上底面灌水）の実用性を検討した．頭上灌水と比較して頭上底面灌水では灌水効率（培地に吸収された灌水量／灌水量）が大幅に改善できた．ガーデンシクラメンの生育は頭上底面灌水区で最もよく，次いでひも灌水，底面灌水の順であり，頭上灌水区で最も生育が抑制された．ニチニチソウでは頭上灌水より頭上底面灌水区で生育が改善されたが，灌水量には差はほとんどみられなかった．ペチュニアでは灌水量が多いほど，専用トレイに溜める水量が多いほど生育が旺盛になった．しかし，パンジーでは頭上底面灌水によって生育が抑制された．ポットレス花壇苗生産では頭上底面灌水が最も適切であったが，蒸発散の少ない冬期や過湿に弱い種においては灌水量をできるだけ少なくすべきと考えられた． kn-abstract=The effects of irrigation methods on several bedding plants without polyethylene pots using compacted polyester fiber medium hardened by heat fusion were investigated. The characteristics of overhead irrigation with a tray collecting runoff water (combination of overhead irrigation and subirrigation) were investigated at the same time. Irrigation usage (the amount of water supplied per pot / amount of irrigation water) with a combination of overhead irrigation and subirrigation was improved compared to overhead irrigation alone. The growth of garden type Cyclamen grown under a combination of both overhead irrigation and subirrigation was significantly greater than that grown in either wick irrigation, ebb & flow irrigation or overhead irrigation. Notably, smaller growth was achiered in garden type cyclamen grown with overhead irrigation. The growth of Vinca grown in a combination of overhead irrigation and subirrigation was significantly greater than that grown with overhead irrigation alone. The irrigation amount had no effect on the growth of Vinca regardless of irrigation method. The growth of Petunia was greater with increased amounts of irrigation water. However, the growth of Pansy grown under overhead irrigation was significantly greater than that grown in a combination of overhead irrigation and subirrigation. These results suggest that a combination of overhead irrigation and subirrigation method in bedding plant production without polyethylene pots is generally suitable since the plants grow without drought stress. However, it may be suggested that the amount of irrigation water should be as low as possible in the winter season or with sensitive species in order to prevent waterlogging injury. en-copyright= kn-copyright= en-aut-name=OohashiYuji en-aut-sei=Oohashi en-aut-mei=Yuji kn-aut-name=大橋佑司 kn-aut-sei=大橋 kn-aut-mei=佑司 aut-affil-num=1 ORCID= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=2 ORCID= en-aut-name=ShimizuNozomi en-aut-sei=Shimizu en-aut-mei=Nozomi kn-aut-name=清水希 kn-aut-sei=清水 kn-aut-mei=希 aut-affil-num=3 ORCID= en-aut-name=KomaYasushi en-aut-sei=Koma en-aut-mei=Yasushi kn-aut-name=小間康史 kn-aut-sei=小間 kn-aut-mei=康史 aut-affil-num=4 ORCID= en-aut-name=MorishitaTeruhisa en-aut-sei=Morishita en-aut-mei=Teruhisa kn-aut-name=森下照久 kn-aut-sei=森下 kn-aut-mei=照久 aut-affil-num=5 ORCID= en-aut-name=FujiiKazunori en-aut-sei=Fujii en-aut-mei=Kazunori kn-aut-name=藤井一徳 kn-aut-sei=藤井 kn-aut-mei=一徳 aut-affil-num=6 ORCID= en-aut-name=ShimaKohji en-aut-sei=Shima en-aut-mei=Kohji kn-aut-name=島浩二 kn-aut-sei=島 kn-aut-mei=浩二 aut-affil-num=7 ORCID= affil-num=1 en-affil= kn-affil=みのる産業㈱植物工学研究所 affil-num=2 en-affil= kn-affil=応用植物科学コース affil-num=3 en-affil= kn-affil=応用植物科学コース affil-num=4 en-affil= kn-affil=みのる産業(株)植物工学研究所 affil-num=5 en-affil= kn-affil=みのる産業(株)植物工学研究所 affil-num=6 en-affil= kn-affil=みのる産業(株)植物工学研究所 affil-num=7 en-affil= kn-affil=和歌山県農林水産総合技術センター農業試験場 en-keyword=bedding plant kn-keyword=bedding plant en-keyword=combination of overhead irrigation and subirrigation kn-keyword=combination of overhead irrigation and subirrigation en-keyword=drought stress kn-keyword=drought stress en-keyword=irrigation usage kn-keyword=irrigation usage en-keyword=waterlogging injury kn-keyword=waterlogging injury END start-ver=1.4 cd-journal=joma no-vol=99 cd-vols= no-issue=1 article-no= start-page=55 end-page=62 dt-received= dt-revised= dt-accepted= dt-pub-year=2010 dt-pub=20100201 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Effects of Nutrient Solution Concentration on Cut Flower Yield, Quality and Characteristics of Seasonal Nutrient Absorption of Spray Carnation Grown by Cultivation in Drip Fertigation kn-title=給液濃度がかん水同時施肥法で栽培したスプレーカーネーションの切り花収量と品質および時期別養分吸収特性に及ぼす影響 en-subtitle= kn-subtitle= en-abstract=スプレーカーネーションのかん水同時施肥法における養分吸収特性を‘バーバラ’で調査した．窒素：リン（P）：カリウム（K）：カルシウム（Ca）：マグネシウム（Mg）の含有率（%）が15：6.5：12.5：3.6：0.9の液肥を，低濃度（3,000倍），中濃度（1,500倍），高濃度（1,000倍）の3水準で，毎日0.0～13.9㎜ずつ点滴給液した．切り花収量は中濃度区と高濃度区が多く，切り花品質は2番花において低濃度区の切り花重が減少した．植物体の窒素およびカリウム含有率は乾物増加量が増大するにつれて低下し，リンは秋期と春期に減少した．低濃度区の窒素，カリウムの含有率は土壌養分含有量の減少にともない，低下した．高濃度区では土壌の窒素およびリン含有量が栽培終了時に大幅に増大した．中濃度での給液における１株当たりの総養分吸収量は窒素が2,807.0㎎，リンが493.5㎎，カリウムが3,667.4㎎，カルシウムが1,615.8㎎，マグネシウムが320.9㎎であった．リン，カリウム，カルシウム，マグネシウムの窒素に対する吸収割合はいずれも春期に約1.3倍に上昇した．スタンダードカーネーションとの比較では，スプレーカーネーションでは，ややリンの植物体含有率と吸収量が少ないが，窒素，カリウム，カルシウム，マグネシウムの植物体含有率および吸収量には，ほとんど差がなかった． kn-abstract=Effects of nutrient solution concentration on cut flower yield, quality and characteristics of seasonal nutrient absorption of spray carnation ‘Barbara’ grown by cultivation in drip fertigation were investigated. 'Barbara' was grown with a nutrient solution (N:15%, P:6.5%, K:12.5%, Ca:3.6%, Mg:0.9%), at three concentration levels which were high concentration (1,000 times), middle concentration (1,500 times) and low concentration (3,000 times). The daily amount of nutrient solution was ranged from 0.0mm to 13.9mm. The total cut flower yield of middle concentration and high concentration were bigger than that of low concentration. The weight of the second cut flower of low concentration was decreased as compared to that of middle concentration and high concentration. Nitrogen (N) and potassium (K) in the plant nutrient ratio were decreased as the increase of dry matter and phosphorus (P) was increased at autumn and spring. With a reduction in the soil nutrient contents, Nitrogen and potassium in the plant nutrient ratio of low concentration were decreased. Nitrogen and phosphorus in the soil nutrient contents of high concentration were increased at the end of cultivation. In the total nutrient absorbed amount of middle concentration, 2,807.9 mg nitrogen, 493.5 mg phosphorus, 3,667.4 mg potassium, 1,615.8 mg calcium (Ca) and 320.9 mg magnesium (Mg) were absorbed per plant. In spring, the ratio of nitrogen absorbed amount to nutrients absorbed amount was increased 1.3 times. Phosphorus ratio and phosphorus absorbed amount in spray carnation were fewer than that of standard carnation. There were no differences in total nitrogen, potassium, calcium and magnesium absorption between spray carnation and standard carnation. en-copyright= kn-copyright= en-aut-name=YamanakaMasahito en-aut-sei=Yamanaka en-aut-mei=Masahito kn-aut-name=山中正仁 kn-aut-sei=山中 kn-aut-mei=正仁 aut-affil-num=1 ORCID= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=2 ORCID= en-aut-name=OgawaKinoe en-aut-sei=Ogawa en-aut-mei=Kinoe kn-aut-name=小河甲 kn-aut-sei=小河 kn-aut-mei=甲 aut-affil-num=3 ORCID= en-aut-name=UdaAkira en-aut-sei=Uda en-aut-mei=Akira kn-aut-name=宇田明 kn-aut-sei=宇田 kn-aut-mei=明 aut-affil-num=4 ORCID= en-aut-name=IwaiToyomichi en-aut-sei=Iwai en-aut-mei=Toyomichi kn-aut-name=岩井豊通 kn-aut-sei=岩井 kn-aut-mei=豊通 aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 affil-num=2 en-affil= kn-affil=岡山大学 affil-num=3 en-affil= kn-affil=兵庫県立農林水産技術総合センター affil-num=4 en-affil= kn-affil=兵庫県立農林水産技術総合センター affil-num=5 en-affil= kn-affil=兵庫県立農林水産技術総合センター en-keyword=fertigation kn-keyword=fertigation en-keyword=nutrient absorption kn-keyword=nutrient absorption en-keyword=plant nutrient kn-keyword=plant nutrient en-keyword=soil nutrient kn-keyword=soil nutrient en-keyword=spray carnation kn-keyword=spray carnation END start-ver=1.4 cd-journal=joma no-vol=32 cd-vols= no-issue= article-no= start-page=9 end-page=14 dt-received= dt-revised= dt-accepted= dt-pub-year=2010 dt-pub=20100401 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=根域制限栽培におけるトマト品種の生育・収量と果実品質 en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=吉田裕一 kn-aut-sei=吉田 kn-aut-mei=裕一 aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=松野大樹 kn-aut-sei=松野 kn-aut-mei=大樹 aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=3 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=高田圭太 kn-aut-sei=高田 kn-aut-mei=圭太 aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=岡山大学大学院自然科学研究科 affil-num=2 en-affil= kn-affil=岡山大学大学院自然科学研究科 affil-num=3 en-affil= kn-affil=岡山大学大学院自然科学研究科 affil-num=4 en-affil= kn-affil=岡山大学農学部附属農場 END start-ver=1.4 cd-journal=joma no-vol=32 cd-vols= no-issue= article-no= start-page=15 end-page=19 dt-received= dt-revised= dt-accepted= dt-pub-year=2010 dt-pub=20100401 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=培養液濃度が根域制限－日射比例給液栽培トマトの生育・収量と果実品質に及ぼす影響 en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=吉田裕一 kn-aut-sei=吉田 kn-aut-mei=裕一 aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=松野大樹 kn-aut-sei=松野 kn-aut-mei=大樹 aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=3 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=高田圭太 kn-aut-sei=高田 kn-aut-mei=圭太 aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=岡山大学大学院自然科学研究科 affil-num=2 en-affil= kn-affil=岡山大学大学院自然科学研究科 affil-num=3 en-affil= kn-affil=岡山大学大学院自然科学研究科 affil-num=4 en-affil= kn-affil=岡山大学農学部附属農場 END start-ver=1.4 cd-journal=joma no-vol=100 cd-vols= no-issue= article-no= start-page=25 end-page=29 dt-received= dt-revised= dt-accepted= dt-pub-year=2011 dt-pub=20110201 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Effects of seed lots and seed production time on growth, flowering and cut flower quality in Bupleurum rotundifolium L. kn-title=種子のロットおよび採種時期がブプレウルムの 生育，開花および切り花形質に及ぼす影響 en-subtitle= kn-subtitle= en-abstract= kn-abstract=Effects of seed lots (No. 021793, 025090, 026247, 027668) and seed production time on growth, flowering and cut flower quality in Bupleurum rotundifolium L. were investigated. The rate of germination was different depending on the seed lots, 021793 was lowest, and 026247 was highest. Days to visible bud and flowering were the shortest at 025090, and longest at 026247. The rate of germination of seed harvested on home seed-raising was different for seed production time. Seed harvested during high temperature period from the middle of June to the beginning of July showed remarkably high rate of germination. While plants grown by seed harvested during high temperature period remarkably delayed flowering and had low cut flower quality, plants grown on seed harvested during low temperature period enhanced flowering and had high cut flower quality. There was a little difference in parental line. It was thought that seed production time was affected by the environmental conditions during seed production time than by the seed lot. en-copyright= kn-copyright= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=1 ORCID= en-aut-name=IshiiMayumi en-aut-sei=Ishii en-aut-mei=Mayumi kn-aut-name=石井真由美 kn-aut-sei=石井 kn-aut-mei=真由美 aut-affil-num=2 ORCID= en-aut-name=FujiwaraKazuki en-aut-sei=Fujiwara en-aut-mei=Kazuki kn-aut-name=藤原一毅 kn-aut-sei=藤原 kn-aut-mei=一毅 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=岡山大学大学院自然科学研究科 affil-num=2 en-affil= kn-affil=岡山大学大学院自然科学研究科 affil-num=3 en-affil= kn-affil=岡山大学大学院自然科学研究科 en-keyword=cut flower quality kn-keyword=cut flower quality en-keyword=environmental condition kn-keyword=environmental condition en-keyword=home seed-raising kn-keyword=home seed-raising en-keyword=parental line kn-keyword=parental line en-keyword=water absorption kn-keyword=water absorption en-keyword=seed production time kn-keyword=seed production time END start-ver=1.4 cd-journal=joma no-vol=100 cd-vols= no-issue= article-no= start-page=17 end-page=23 dt-received= dt-revised= dt-accepted= dt-pub-year=2011 dt-pub=20110201 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Growth and Yield of Substrate-Cultured Strawberry as Affected by Root Zone Volume and Fertigation Frequency kn-title=ピート栽培における培地量と給液制御方法がイチゴの生育と 収量に及ぼす影響 en-subtitle= kn-subtitle= en-abstract= kn-abstract=Effects of root-zone volume and fertigation frequency on 4 cultivars of substrate-grown strawberry (Fragaria×ananassa Duch., ‘Nyoho’, ‘Asukarubi’, ‘Akihime’ and ‘Tochiotome’) were investigated. Fertigation frequency had no significant effect on growth and yield of strawberry even in the minimum root-zone volume of 0.6L/plant. Total yield, mean berry weight, and root dry weight at end of harvest decreased with decrease in volume, but no significant difference was observed in number of harvested berries and subsequent growth of runners and daughter plants. In the yield and root growth, there were large differences between peat bags (2.25L/plant) and bowl-shaped containers (0.6-1.5L/plant), and highly significant non-linear regressions between the two parameters and the root-zone volume. The differences may be caused by factors other than the volume, such as the shape of root-zone and edge of containers or drain property, and so on. en-copyright= kn-copyright= en-aut-name=YoshidaYuichi en-aut-sei=Yoshida en-aut-mei=Yuichi kn-aut-name=吉田裕一 kn-aut-sei=吉田 kn-aut-mei=裕一 aut-affil-num=1 ORCID= en-aut-name=HiroseYasuhisa en-aut-sei=Hirose en-aut-mei=Yasuhisa kn-aut-name=廣瀬泰久 kn-aut-sei=廣瀬 kn-aut-mei=泰久 aut-affil-num=2 ORCID= en-aut-name=MorimotoYukari en-aut-sei=Morimoto en-aut-mei=Yukari kn-aut-name=森本由香里 kn-aut-sei=森本 kn-aut-mei=由香里 aut-affil-num=3 ORCID= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=応用植物科学コース affil-num=2 en-affil= kn-affil=応用植物科学コース affil-num=3 en-affil= kn-affil=応用植物科学コース affil-num=4 en-affil= kn-affil=応用植物科学コース en-keyword=Fragaria×ananassa kn-keyword=Fragaria×ananassa en-keyword=root kn-keyword=root en-keyword=runner kn-keyword=runner en-keyword=solar radiation kn-keyword=solar radiation en-keyword=water absorption kn-keyword=water absorption END start-ver=1.4 cd-journal=joma no-vol=100 cd-vols= no-issue= article-no= start-page=31 end-page=37 dt-received= dt-revised= dt-accepted= dt-pub-year=2011 dt-pub=20110201 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Effects of seed lots and seed production time on growth, flowering and cut flower quality in Bupleurum rotundifolium L. kn-title=スプレーカーネーションの灌水同時施肥栽培における 栽植方式が収量および切り花品質に及ぼす影響 en-subtitle= kn-subtitle= en-abstract= kn-abstract=Effects of three planting patterns; two-row-planting high density (25 plants·m(-2)), two-row-planting low density (12.5 plants·m(-2)), and four-row-planting (25 plants·m(-2)) on the cut flower number and quality of spray carnation (Dianthus caryophyllus L.) cv. ‘Barbara’ and ‘Cherry Tessino’ grown by fertigation cultivation were investigated. In ‘Barbara’, there was no difference in total cut flower number between two-row-planting high density and four-row-planting. Total cut flower number of two-row-planting low density decreased to 60% of two-row-planting high density or four-row-planting. In ‘Cherry Tessino’, the total cut flower number of two-row-planting high density was 15% more than that of four-row-planting. The total cut flower number of two-row-planting low density decreased to 60~70% of two-row-planting high density or four-row-planting. There was no difference in cut flower quality between two-row-planting high density and four-row-planting in both cultivars. Cut flower weight and stem diameter of two-row-planting low density increased compared to those of two-row-planting high density or four-row-planting. Thus, the result indicates that two-row-planting high density may be suitable for fertigation cultivation in carnation. en-copyright= kn-copyright= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name=山中正仁 kn-aut-sei=山中 kn-aut-mei=正仁 aut-affil-num=1 ORCID= en-aut-name=IshiiMayumi en-aut-sei=Ishii en-aut-mei=Mayumi kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=2 ORCID= en-aut-name=FujiwaraKazuki en-aut-sei=Fujiwara en-aut-mei=Kazuki kn-aut-name=東浦優 kn-aut-sei=東浦 kn-aut-mei=優 aut-affil-num=3 ORCID= affil-num=1 en-affil= kn-affil=大学院自然科学研究科 affil-num=2 en-affil= kn-affil=大学院自然科学研究科 affil-num=3 en-affil= kn-affil=兵庫県立農林水産技術総合センター en-keyword=cultivated by fertigation kn-keyword=cultivated by fertigation en-keyword=planting density kn-keyword=planting density en-keyword=planting pattern kn-keyword=planting pattern en-keyword=spray carnation kn-keyword=spray carnation END start-ver=1.4 cd-journal=joma no-vol=101 cd-vols= no-issue= article-no= start-page=33 end-page=37 dt-received= dt-revised= dt-accepted= dt-pub-year=2012 dt-pub=20120201 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Effect of Air or Medium Temperature on Occurrence of Leaf-yellow-spot in Chrysanthemum 'Seikou-no-makoto' kn-title=気温および地温がキク‘精興の誠’の黄斑発生に及ぼす影響 en-subtitle= kn-subtitle= en-abstract=キク（Chrysanthemum × morifolium）‘精興の誠’の葉身で発生する黄斑に及ぼす気温および培地温度の影響を調査した．昼夜温を40/30℃，35/25℃，なりゆきの3区で栽培した場合，昼夜温が高いほど生育は抑制され，黄斑の発生は早くなったが，黄斑発生度は40/30℃区と比較してなりゆき区で高くなる傾向がみられた．夜温を30℃，25℃となりゆき区で栽培した場合，黄斑発生度は30℃区と比較してなりゆき区で有意な差がみられた．生育が抑制されるほどの長期間の強光や高温は黄斑発生を抑制させたことから，生育が旺盛な環境条件における外的要因により黄斑発生は助長されると考えられた．地下部の温度は黄斑発生に影響しなかったことから黄斑発生は地上部，特に葉身部位の高温により助長されることが明らかになった． kn-abstract=Leaf-yellow-spot, a physiological abnormality occurring in leaves of several chrysanthemum (Chrysanthemum x morifolium) cultivars is a very serious production problem in Japan. High temperature or high irradiation are possible physiological factors, which may lead to leaf-yellow-spot. In the present study, effects of air or medium temperature on the occurrence of leaf-yellow-spot in 'Seikou-nomakoto' were investigated. The nodal position with spotted leaves and rate of leaf-yellow-spot increased with increasing day/night temperature. The nodal position with spotted leaves and rate of leaf-yellow-spot of plants grown on 30°C night air temperature were smaller than those grown on 25°C or ambient night air temperature. The days to first occurrence of leaf-yellow-spot showed no differences among medium temperatures. As occurrence of leaf-yellow-spot was not affected by root zone temperature, we recognized that occurrence of leaf-yellow-spot was promoted by high temperature or solar radiation on shoot, especially leaf. Occurrence of leaf-yellow-spot was reduced by long period high temperature and/or high solar radiation as plant growth reduced. Therefore, we thought that occurrence of leaf-yellow-spot was promoted by environmental condition as plant growth would promote. en-copyright= kn-copyright= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=1 ORCID= en-aut-name=YamaguchiNorihito en-aut-sei=Yamaguchi en-aut-mei=Norihito kn-aut-name=山口訓史 kn-aut-sei=山口 kn-aut-mei=訓史 aut-affil-num=2 ORCID= en-aut-name=FujitaShino en-aut-sei=Fujita en-aut-mei=Shino kn-aut-name=藤田紫乃 kn-aut-sei=藤田 kn-aut-mei=紫乃 aut-affil-num=3 ORCID= en-aut-name=YotsuyaRyosuke en-aut-sei=Yotsuya en-aut-mei=Ryosuke kn-aut-name=四谷亮介 kn-aut-sei=四谷 kn-aut-mei=亮介 aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 affil-num=2 en-affil= kn-affil= affil-num=3 en-affil= kn-affil= affil-num=4 en-affil= kn-affil= en-keyword=air temperature kn-keyword=air temperature en-keyword=environmental factor kn-keyword=environmental factor en-keyword=irradiation kn-keyword=irradiation en-keyword=leaf-yellow-spot kn-keyword=leaf-yellow-spot en-keyword=medium temperature kn-keyword=medium temperature END start-ver=1.4 cd-journal=joma no-vol=102 cd-vols= no-issue= article-no= start-page=29 end-page=34 dt-received= dt-revised= dt-accepted= dt-pub-year=2013 dt-pub=20130201 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Effect of Day Length, Supplemental Lighting Strength, Shading Period and Minimum Night Temperature on Occurrence of Abnormal Inflorescence in Gypsophila paniculata ‘Altair’ kn-title=日長，補光強度，遮光時期および最低夜温がシュッコンカスミソウ ‘アルタイル’の形態異常花序発生に及ぼす影響 en-subtitle= kn-subtitle= en-abstract=シュッコンカスミソウ‘アルタイル’の形態異常花序の発生には環境要因が関与していると考えられたので，日長，補光強度，遮光時期および最低夜温が形態異常花序発生に及ぼす影響を調査した．形態異常程度は４種類のパターン (０：正常，１：茎が短いもの，２：２本の茎が癒着，3：ひどく湾曲し変形したもの) に分類し，その影響を受けた小花の割合を求めた．蛍光灯による日長処理（12時間，16時間，20時間，24時間）や白熱灯による日長処理（自然日長，24時間）は形態異常花序発生率に影響を及ぼさなかった．蛍光灯（PPFD 1μmol・m-2・s-1），白熱灯（PPFD 3μmol・m-2・s-1），メタルハライドランプ（PPFD 14μmol・m-2・s-1），高圧ナトリウムランプ（PPFD 48μmol・m-2・s-1）を用いて16時間の補光を行った．異なる光源による光強度でも形態異常発生率に一定の傾向は認められなかった．遮光時期を変えても形態異常発生率に一定の傾向は認められなかった． 最低夜温を15℃に上げると８℃区と比較して15℃区の形態異常発生は大きく減少した．特にパターン２と３の発生率は大幅に低下した．各実験の処理開始から発蕾までの平均夜温（7.1℃，9.0℃，9.2℃，11.6℃，16.4℃）と，パターン３の形態異常発生率（13.1%，8.7%，7.1%，1.1%，0.7%）との間に高い負の相関（R2＝0.849）が認められ，処理開始から発蕾までの平均夜温が高いほど形態異常発生率は低下した．以上のことから，形態異常花序発生には夜間の温度が大きく関与しているのではないかと推察された． kn-abstract=As occurrence of abnormal inflorescence in Gypsophila paniculata ‘Altair’ is caused by environmental conditions, effects of day length, supplemental lighting strength, shading period and minimum night temperature on occurrence of abnormal inflorescence were investigated. Abnormal inflorescence was classified into four types : normal, pattern 1 (Short-flower stalk), pattern 2 (Coalescent two-flower stalk) and pattern 3 (Looping and irregular-flower stalk). Neither of 12h, 16h, 20h or 24h day length by fluorescent lamp, nor 24h by incandescent lamp affected occurrence of abnormal inflorescence. Effects of four levels of light intensity (fluorescent lamp : PPFD 1μmol・m−2・s−1, incandescent lamp : PPFD 3μmol・m−2・s−1, metal halide lamp : PPFD 14μmol・m−2・s−1 and high-pressure sodium lamp : PPFD 48μmol・m−2・s−1) were examined in 16h photoperiod. Occurrence of abnormal inflorescence was not affected by different light intensities, neither was it affected by shading period. Occurrence of abnormal inflorescence at 15°C was however significantly reduced compared to that at 8°C. In particular, patterns 2 and 3 at 15°C were significantly reduced compared to those at 8°C. There was a strong negative correlation between average night temperature from starting the treatment to flower budding (7.1°C, 9.0°C, 9.2°C, 11.6°C and 16.4°C) and incidence of pattern 3 (13.1%, 8.7%, 7.1%, 1.1% and 0.7%). Therefore, as average night temperature increased, occurrence of abnormal inflorescence decreased. The results show that low night temperature may be the main factor inducing occurrence of abnormal inflorescence. en-copyright= kn-copyright= en-aut-name=YamaguchiNorihito en-aut-sei=Yamaguchi en-aut-mei=Norihito kn-aut-name=山口訓史 kn-aut-sei=山口 kn-aut-mei=訓史 aut-affil-num=1 ORCID= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=2 ORCID= en-aut-name=KobikiKayoko en-aut-sei=Kobiki en-aut-mei=Kayoko kn-aut-name=小日置佳世子 kn-aut-sei=小日置 kn-aut-mei=佳世子 aut-affil-num=3 ORCID= en-aut-name=OtaniShoko en-aut-sei=Otani en-aut-mei=Shoko kn-aut-name=大谷翔子 kn-aut-sei=大谷 kn-aut-mei=翔子 aut-affil-num=4 ORCID= en-aut-name=YoshidaYuichi en-aut-sei=Yoshida en-aut-mei=Yuichi kn-aut-name=吉田裕一 kn-aut-sei=吉田 kn-aut-mei=裕一 aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil= affil-num=2 en-affil= kn-affil=岡山大学 affil-num=3 en-affil= kn-affil= affil-num=4 en-affil= kn-affil= affil-num=5 en-affil= kn-affil=岡山大学 en-keyword=abnormal inflorescence pattern kn-keyword=abnormal inflorescence pattern en-keyword=cut flower form kn-keyword=cut flower form en-keyword=environmental factor kn-keyword=environmental factor en-keyword=incidence of abnormal inflorescence kn-keyword=incidence of abnormal inflorescence en-keyword=low night temperature kn-keyword=low night temperature END start-ver=1.4 cd-journal=joma no-vol=102 cd-vols= no-issue= article-no= start-page=15 end-page=20 dt-received= dt-revised= dt-accepted= dt-pub-year=2013 dt-pub=20130201 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Effect of Supplied Amount and Strength of Nutrient Solution on Growth, Yield, and Fruit Quality of Strawberry ‘Saga-honoka’ Grown with Sufficiently Elevated CO2 kn-title=培養液濃度と施用量が高CO2濃度条件下で育てたイチゴ‘さがほのか’の生育・収量と果実品質に及ぼす影響 en-subtitle= kn-subtitle= en-abstract=イチゴ‘さがほのか’を用いて，高CO2濃度条件下(日中800～2500ppm)での栽培における培養液濃度と施用量の影響について検討した．培養液は排液率20%を目標に，大塚Ａ処方を30～50%濃度で適宜変更する慣行区を標準として，濃度をその1.2倍，0.8倍とする高濃度区と低濃度区，さらに低濃度区においては，給液量を1.2倍(排液率35%)とする低濃度多量区を設け，計４処理区とした．排液率20%を目標とした低濃度培養液管理では，12月以降の排液中NO3-Nは検出限界以下であり，栽培期間を通して養分が不足しがちであった．また，全Ｎ施用量も他の３処理区と比較すると少なくなり，１月以降の葉面積が小さくなった．収量・果実品質においては処理区間で有意な差は認められなかったが，チップバーン発生率は，高濃度区で高く，低濃度多量区の発生率が最も低かった．低濃度多量区では，葉面積も大きくなったことから，‘さがほのか’においては，排液率30～40%，排液EC50～60mS・m-1を目標とした低濃度での培養液管理が望ましいといえる． kn-abstract=The effects of supplied amount and strength of nutrient solution were investigated for strawberry (Fragaria×ananassa Duch. cv. Saga-honoka) grown with peat bags in elevated CO2 environment (800-2500 ppm in the day time, November 4 to April 7). Three strengths (L : low-80%, M : standard-100% and H : high-120%) of nutrient solution (N : 8.85, P : 0.85, K : 3.90, Ca : 2.05, Mg : 0.93 mM ; half strength of Ohtsuka A solution) were compared. Around 20% of discharged rate (discharged/supplied amount of nutrient solution) was kept for these 3 plots and 30 to 40% of the rate was kept for additional plot of 80%-solution (L2) by altering the supplied amount of 80%-solution. As almost no nitrate could be detected in drainage of L, nutrient supply was probably insufficient throughout the experiment. Total amount of nitrogen supply was lower than the other 3 plots and leaf area was the smallest after December. Although there was no significant difference in yield and fruit quality, the rate of tip burn affected flowers was lowest in L2 and highest in H. Thus, around 30-40% of drainage rate and 50-60 mS・m−1 of drainage EC may be desirable target values for ‘Saga-honoka’ strawberry grown with peat based substrate. en-copyright= kn-copyright= en-aut-name=InazumiDaichi en-aut-sei=Inazumi en-aut-mei=Daichi kn-aut-name=稲角大地 kn-aut-sei=稲角 kn-aut-mei=大地 aut-affil-num=1 ORCID= en-aut-name=YoshidaYuichi en-aut-sei=Yoshida en-aut-mei=Yuichi kn-aut-name=吉田裕一 kn-aut-sei=吉田 kn-aut-mei=裕一 aut-affil-num=2 ORCID= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=3 ORCID= en-aut-name=MurakamiKenji en-aut-sei=Murakami en-aut-mei=Kenji kn-aut-name=村上賢治 kn-aut-sei=村上 kn-aut-mei=賢治 aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil= affil-num=2 en-affil= kn-affil=岡山大学 affil-num=3 en-affil= kn-affil=岡山大学 affil-num=4 en-affil= kn-affil=岡山大学 en-keyword=nutrient absorption kn-keyword=nutrient absorption en-keyword=tipburn kn-keyword=tipburn en-keyword=titratable acid kn-keyword=titratable acid en-keyword=total soluble solid kn-keyword=total soluble solid END start-ver=1.4 cd-journal=joma no-vol=102 cd-vols= no-issue= article-no= start-page=35 end-page=41 dt-received= dt-revised= dt-accepted= dt-pub-year=2013 dt-pub=20130201 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Effect of Lighting Using Yellow LEDs Designed for Moth Control on Flowering Response of Chrysanthemum kn-title=防蛾用黄色LED光がキクの開花反応に及ぼす影響 en-subtitle= kn-subtitle= en-abstract=キクの防蛾と開花抑制に両用できる単一の光源を開発するために，青（ピーク波長：463nm），緑（519nm），黄緑（576nm），黄（597nm）および赤色（646nm）LED光が開花および切り花形質に及ぼす影響を調査した．青色光を除いて，放射照度が大きいほど発蕾までの日数が大きくなった．黄緑および黄色光は，赤色光とほぼ同等の開花抑制作用を有していた．いずれの光質および放射照度に関わらず，やなぎ葉数や花弁の展開異常の発生に差は見られなかった．次に，黄色LED光による暗期中断と終夜照明による影響を調査した．暗期中断と終夜照明では，やなぎ葉数を除く切り花形質に有意な差が見られたが，実用上の問題はなかった．開花抑制に必要となる放射照度の下限値は，終夜照明では約80mW m-2であり，暗期中断のほぼ半分であった．以上のことから，黄色LED光は，単一の光源としてキクの防蛾と開花抑制に両用することが可能であった． kn-abstract=In order to develop a single light source which can be used both for moth control and flower inhibition in chrysanthemum, effects of blue (463nm), green (519nm), yellow green (576nm), yellow (597nm) and red light (646nm) LEDs on the flowering and the cut flower characteristics of chrysanthemum were investigated. As irradiance increased, the days to flower budding increased except under blue light. Yellow green and yellow LED had flower inhibiting effect equivalent to red LED. There was no difference in the crown bud number and the occurrence of abnormal flower irrespective of the light quality and irradiance. Next the, effects of night break and continuous lighting treatment by yellow LED on the flowering and cut flower characteristics of the chrysanthemum were investigated. There were significant differences in the cut flower characteristics except for the blade number on the neck in these treatments ; there was no practical problem with night break or continuous lighting. The minimum irradiance strength enough for flower inhibition in the continuous lighting treatment was about 80 mW m−2 that was half in night break treatment. Therefore, it is considered that yellow LED can be used as single light source for both moth control and flower inhibition in chrysanthemum. en-copyright= kn-copyright= en-aut-name=IshikuraSatoshi en-aut-sei=Ishikura en-aut-mei=Satoshi kn-aut-name=石倉聡 kn-aut-sei=石倉 kn-aut-mei=聡 aut-affil-num=1 ORCID= en-aut-name=KajiharaShinji en-aut-sei=Kajihara en-aut-mei=Shinji kn-aut-name=梶原真二 kn-aut-sei=梶原 kn-aut-mei=真二 aut-affil-num=2 ORCID= en-aut-name=FukushimaKeigo en-aut-sei=Fukushima en-aut-mei=Keigo kn-aut-name=福島啓吾 kn-aut-sei=福島 kn-aut-mei=啓吾 aut-affil-num=3 ORCID= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=広島県立総合技術研究所農業技術センター affil-num=2 en-affil= kn-affil=広島県立総合技術研究所農業技術センター affil-num=3 en-affil= kn-affil=広島県立総合技術研究所農業技術センター affil-num=4 en-affil= kn-affil=岡山大学 en-keyword=illuminated culture kn-keyword=illuminated culture en-keyword=light-emitting diode kn-keyword=light-emitting diode en-keyword=long day treatment kn-keyword=long day treatment en-keyword=regulation of flowering kn-keyword=regulation of flowering en-keyword=spectral quality of light kn-keyword=spectral quality of light END start-ver=1.4 cd-journal=joma no-vol=102 cd-vols= no-issue= article-no= start-page=21 end-page=28 dt-received= dt-revised= dt-accepted= dt-pub-year=2013 dt-pub=20130201 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Incidence of Blossom-end Rot in Relation to Water-soluble Ca Concentration in Tomato Fruits as Affected by Ca Nutrition under Root Restriction kn-title=培養液中Ca濃度が根域制限栽培したトマト果実の 水溶性Ca濃度と尻腐れ果発生に及ぼす影響 en-subtitle= kn-subtitle= en-abstract=根域制限下におけるトマトの養分吸収を調査した結果，培養液中Caの多くは排液とともに排出され，Ｎに対するCaの吸収比率は園試処方やHoagland処方中の比率の50%以下であった．そこで，園試処方培養液中のCa(NO3)2･4H2Oの一部をNH4NO3に置換してCa濃度１，２，４ﾋの培養液を作成し，日射比例給液制御下で ‘ハウス桃太郎’の根城制限栽培（培地容量250，500 ㎖）を行った．培養液のCa濃度が１ﾋであっても排液中のCa濃度が２ﾋよりも高く推移したが，Ca吸収量は極めて少なく，著しいCa欠乏症状が現れた．低Ca濃度区では尻腐れ果が多発し，１ﾋ区では第３果房より上段の果実は全て尻腐れ果となり，第９果房までの収量は２ﾋ区，１ﾋ区でそれぞれ４ﾋ区の50%，36%に低下した．腋芽茎中のCa濃度の低下は0.6N-NaCl可溶性画分や0.6N-HCl可溶性画分と比較して水溶性画分の低下が著しかった．そこで，Ca濃度が１～４ﾋの培養液を用いて点滴栽培を行い，果実中のCa濃度を分画して定量した．果実頂部のCa濃度はいずれの画分においても培養液中Ca濃度が低いほど低く，開花から尻腐れ症状が発生するまでの日数も短くなった．尻腐れ果発生率と果頂部の水溶性Ca濃度との間にのみ有意な負の相関が認められた．以上のことから，果実の水溶性Ca濃度がトマトの尻腐れ果発生リスクの大小に大きくかかわっており，植物体の水溶性Ca濃度測定は尻腐れ果発生防止のためのCa栄養診断に応用できる可能性が高いと考えられる． kn-abstract=The rate of absorbed Ca to N was less than half of Enshi or Hoagland solution in tomato (Solanum lycopersicum Mill.) grown with restricted root zone volume in previous experiments. Tomato plants were grown in plastic pots containing 250 or 500ml of peat based medium with modified Enshi solutions containing 1, 2 or 4mM of Ca. The solutions were prepared by replacing a part of Ca(NO3)2・4H2O to NH4NO3. Although Ca concentration was higher than 2mM in drainage collected from plants supplied 1mM Ca solution, absorbed amount of Ca was very small and severe symptom of Ca deficiency was observed. Incidence of blossom-end rot (BER) increased with decrease in Ca concentration of the solution and yield decreased to 50% and 36% of 4mM control, in 2mM and 1mM plots, respectively. Among fractionated Ca in stem of lateral shoot, decrease in water-soluble fraction was remarkable compared to 1N NaCl- or 0.6N HCl-soluble fractions. Tomato plants were then grown with modified solutions containing 1~4mM of Ca and fractionated Ca was determined for distal half of fruits. With decrease in solution Ca, fruit Ca decreased in all fractions, and days to BER incidence after flowering also decreased. Significant relationship was found only between the water-soluble Ca concentration in fruit tissue and rate of BER incidence. Thus water-soluble Ca in tomato fruit may closely relate to BER incidence, and an efficient tool to estimate the potential risk of BER may possibly be developed by determining the Ca fraction in the stem of lateral shoots. en-copyright= kn-copyright= en-aut-name=YoshidaYuichi en-aut-sei=Yoshida en-aut-mei=Yuichi kn-aut-name=吉田裕一 kn-aut-sei=吉田 kn-aut-mei=裕一 aut-affil-num=1 ORCID= en-aut-name=ShingaiAya en-aut-sei=Shingai en-aut-mei=Aya kn-aut-name=新開礼 kn-aut-sei=新開 kn-aut-mei=礼 aut-affil-num=2 ORCID= en-aut-name=OoyamaMitsuo en-aut-sei=Ooyama en-aut-mei=Mitsuo kn-aut-name=大山光男 kn-aut-sei=大山 kn-aut-mei=光男 aut-affil-num=3 ORCID= en-aut-name=MurakamiKenji en-aut-sei=Murakami en-aut-mei=Kenji kn-aut-name=村上賢治 kn-aut-sei=村上 kn-aut-mei=賢治 aut-affil-num=4 ORCID= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 affil-num=2 en-affil= kn-affil= affil-num=3 en-affil= kn-affil= affil-num=4 en-affil= kn-affil=岡山大学 affil-num=5 en-affil= kn-affil=岡山大学 en-keyword=BER kn-keyword=BER en-keyword=Ca absorption kn-keyword=Ca absorption en-keyword=Ca fractions kn-keyword=Ca fractions en-keyword=dripfertigation kn-keyword=dripfertigation en-keyword=Enshi solution kn-keyword=Enshi solution END start-ver=1.4 cd-journal=joma no-vol=103 cd-vols= no-issue= article-no= start-page=11 end-page=19 dt-received= dt-revised= dt-accepted= dt-pub-year=2014 dt-pub=20140201 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Effects of potassium nutrition on fruit development and yield of substrate grown strawberry kn-title=養液栽培イチゴの生育・収量と果実発育に及ぼすカリウム栄養の影響 en-subtitle= kn-subtitle= en-abstract= kn-abstract=　Effect of K nutrition on sugar and organic acid concentration in fruit and yield of strawberry cultivars (Fragaria ×ananassa Duch.; Nyoho, Toyonoka, Sachinoka, Asukarubi, Akihime, Tochiotome, and Sagahonoka) was investigated. Nutrient solution (NO3 8, NH4 1, P 1, K 4, Ca 2, Mg 1, SO4 1 ; mM) was modified to contain 0 to 4mM of K by replacing K with Ca and supplied from the beginning of flowering. K in the drainage decreased to a trace level 3 weeks after the beginning of treatment except for 4mM‒K solution. Absorption of NO3 apparently decreased in plants supplied 0mM‒K solution, but little difference was observed among the other 3 solutions. K concentration in petiole decreased linearly with decrease in K concentration in solutions, but there was little difference between the concentrations of leaflet of plants supplied with 4 and 2mM‒K solutions. No difference was observed in concentrations of sugars and organic acids in fruit in primary inflorescence. In the second inflorescence, organic acids and K concentration in fruit linearly decreased with decrease in K in supplied solutions while sugar concentration of fruit decreased significantly only in plants supplied 0mM‒K solution. When 0.5 to 4mM‒K solutions were supplied from 2 weeks after planting, marketable fruit yield was smallest in plants supplied 0.5mM‒K solution followed, by that supplied 1mM‒K solution, and largest in that supplied with 2mM‒K solution. Almost all K supplied with 2mM‒K solution was absorbed by strawberry plants and no difference was observed in quality and K concentration of fruit, yield and plant growth between the plants supplied with 2 and 4mM‒K solutions. It may be suitable to reduce the concentration of K in nutrient solution by half for substrate production of strawberry. en-copyright= kn-copyright= en-aut-name=YoshidaYuichi en-aut-sei=Yoshida en-aut-mei=Yuichi kn-aut-name=吉田裕一 kn-aut-sei=吉田 kn-aut-mei=裕一 aut-affil-num=1 ORCID= en-aut-name=OhmoriToshimasa en-aut-sei=Ohmori en-aut-mei=Toshimasa kn-aut-name=大森敏正 kn-aut-sei=大森 kn-aut-mei=敏正 aut-affil-num=2 ORCID= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=3 ORCID= en-aut-name=TanakaYoshiyuki en-aut-sei=Tanaka en-aut-mei=Yoshiyuki kn-aut-name=田中義行 kn-aut-sei=田中 kn-aut-mei=義行 aut-affil-num=4 ORCID= en-aut-name=MurakamiKenji en-aut-sei=Murakami en-aut-mei=Kenji kn-aut-name=村上賢治 kn-aut-sei=村上 kn-aut-mei=賢治 aut-affil-num=5 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 affil-num=2 en-affil= kn-affil=農林水産省中国四国農政局 affil-num=3 en-affil= kn-affil=岡山大学 affil-num=4 en-affil= kn-affil=岡山大学 affil-num=5 en-affil= kn-affil=石川県立大学生物資源環境学部 en-keyword=Fragaria ×ananassa Duch. kn-keyword=Fragaria ×ananassa Duch. en-keyword=K/Ca ratio kn-keyword=K/Ca ratio en-keyword=organic acids kn-keyword=organic acids en-keyword=sugars kn-keyword=sugars END start-ver=1.4 cd-journal=joma no-vol=37 cd-vols= no-issue= article-no= start-page=9 end-page=16 dt-received= dt-revised= dt-accepted= dt-pub-year=2015 dt-pub=20150401 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=挿し苗時期，苗の大きさとクラウンの深さがイチゴ‘さちのか’ の花芽分化と開花に及ぼす影響 en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=吉田裕一 kn-aut-sei=吉田 kn-aut-mei=裕一 aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=宮地大介 kn-aut-sei=宮地 kn-aut-mei=大介 aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=3 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=田中義行 kn-aut-sei=田中 kn-aut-mei=義行 aut-affil-num=4 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=安場健一郎 kn-aut-sei=安場 kn-aut-mei=健一郎 aut-affil-num=5 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=本村翔 kn-aut-sei=本村 kn-aut-mei=翔 aut-affil-num=6 ORCID= affil-num=1 en-affil= kn-affil=岡山大学農学部附属山陽圏フィールド科学センター affil-num=2 en-affil= kn-affil=岡山大学農学部附属山陽圏フィールド科学センター affil-num=3 en-affil= kn-affil=岡山大学農学部附属山陽圏フィールド科学センター affil-num=4 en-affil= kn-affil=岡山大学農学部附属山陽圏フィールド科学センター affil-num=5 en-affil= kn-affil=岡山大学農学部附属山陽圏フィールド科学センター affil-num=6 en-affil= kn-affil=岡山大学大学院自然科学研究科 END start-ver=1.4 cd-journal=joma no-vol=37 cd-vols= no-issue= article-no= start-page=17 end-page=20 dt-received= dt-revised= dt-accepted= dt-pub-year=2015 dt-pub=20150401 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=間欠冷蔵処理回数がイチゴ‘女峰’の開花に及ぼす影響 en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=吉田裕一 kn-aut-sei=吉田 kn-aut-mei=裕一 aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=安場健一郎 kn-aut-sei=安場 kn-aut-mei=健一郎 aut-affil-num=3 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=田中義行 kn-aut-sei=田中 kn-aut-mei=義行 aut-affil-num=4 ORCID= affil-num=1 en-affil= kn-affil=岡山大学農学部附属山陽圏フィールド科学センター affil-num=2 en-affil= kn-affil=岡山大学農学部附属山陽圏フィールド科学センター affil-num=3 en-affil= kn-affil=岡山大学農学部附属山陽圏フィールド科学センター affil-num=4 en-affil= kn-affil=岡山大学農学部附属山陽圏フィールド科学センター END start-ver=1.4 cd-journal=joma no-vol=106 cd-vols= no-issue= article-no= start-page=27 end-page=32 dt-received= dt-revised= dt-accepted= dt-pub-year=2017 dt-pub=20170201 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=トウガラシ（Capsicum baccatum）における カプサイシノイド含量の変異とその非辛味系統 kn-title=Variations in capsaicinoid contents in the chili pepper (Capsicum baccatum) and its non-pungent accessions en-subtitle= kn-subtitle= en-abstract=　トウガラシ（Capsicum 属）は世界的に重要な香辛料および野菜である．C. baccatum は南米原産のマイナーな栽培種であるが，果色，果形や辛味など果実形質に多様性が認められることから，トウガラシ遺伝資源として注目されている．トウガラシの辛味性についてはC. annuum 種において多くの研究が行われているが，C. baccatum 種においては十分研究されていない．
　本研究では，C. baccatum 36系統について辛味成分カプサイシノイドの含量を調査した．カプサイシノイド含量の幅は0 ～4,258 ㎍ /gDW であった．また果実重と辛味成分含量の間に負の相関が認められた．C. baccatum の辛味は低〜中程度であるが，非辛味系統はほとんど認められず，唯一1 系統（‘Kaleidoscope’）が非辛味であった．この非辛味の安定性を調査するために，辛味程度の異なる系統とともに異なる収穫時期におけるカプサイシノイド含量を調査した．
　他のC. baccatum 系統ではカプサイシノイド含量は収穫時期で変化したが，‘Kaleidoscope’ ではいずれの収穫時期でもカプサイシノイドは検出されなかった．本研究で見出された非辛味系統は将来のC. baccatum の育種において有用であろう． kn-abstract=The chili pepper (Capsicum) is both an important spice and fresh vegetable worldwide. C. baccatum is a lesser known domesticated species that is native to the Andean region. Fruit traits such as color, shape, and pungency markedly vary in this species. C. baccatum has potential as a bioresource for future chili pepper breeding programs. Although extensive studies have been conducted on the pungency of C. annuum, that of C. baccatum has not been examined in as much detail. In the present study, capsaicinoid contents were analyzed in 36 C. baccatum accessions. Capsaicinoid contents ranged between 0 and 4,258 μg/gDW. Furthermore, a negative relationship was observed between capsaicinoid contents and fruit weights. Although the pungency of C. baccatum is regarded as low-mild, very few non-pungent accessions were detected ; only one non-pungent accession (‘Kaleidoscope’) was identified among the C. baccatum accessions examined. In order to validate the stability of non-pungency in the accession, capsaicinoid contents were determined at different harvest dates, along with other accessions with different pungencies. Although capsaicinoid contents in other C. baccatum accessions changed with the picking date, capsaicinoid was not detected in ‘Kaleidoscope’ at any date. The non-pungent accession reported here may be useful for future C. baccatum pepper breeding programs. en-copyright= kn-copyright= en-aut-name=TanakaYoshiyuki en-aut-sei=Tanaka en-aut-mei=Yoshiyuki kn-aut-name=田中義行 kn-aut-sei=田中 kn-aut-mei=義行 aut-affil-num=1 ORCID= en-aut-name=HaraMotohito en-aut-sei=Hara en-aut-mei=Motohito kn-aut-name=原一仁 kn-aut-sei=原 kn-aut-mei=一仁 aut-affil-num=2 ORCID= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=3 ORCID= en-aut-name=YoshidaYuichi en-aut-sei=Yoshida en-aut-mei=Yuichi kn-aut-name=吉田裕一 kn-aut-sei=吉田 kn-aut-mei=裕一 aut-affil-num=4 ORCID= en-aut-name=YasubaKen-ichiro en-aut-sei=Yasuba en-aut-mei=Ken-ichiro kn-aut-name=安場健一郎 kn-aut-sei=安場 kn-aut-mei=健一郎 aut-affil-num=5 ORCID= affil-num=1 en-affil=Graduate School of Environmental and life Science, Okayama University kn-affil=岡山大学大学院環境生命科学研究科 affil-num=2 en-affil=Graduate School of Environmental and life Science, Okayama University kn-affil=岡山大学大学院環境生命科学研究科 affil-num=3 en-affil=Graduate School of Environmental and life Science, Okayama University kn-affil=岡山大学大学院環境生命科学研究科 affil-num=4 en-affil=Graduate School of Environmental and life Science, Okayama University kn-affil=岡山大学大学院環境生命科学研究科 affil-num=5 en-affil=Graduate School of Environmental and life Science, Okayama University kn-affil=岡山大学大学院環境生命科学研究科 en-keyword=Bio-resource kn-keyword=Bio-resource en-keyword=Fruit shape kn-keyword=Fruit shape END start-ver=1.4 cd-journal=joma no-vol=106 cd-vols= no-issue= article-no= start-page=21 end-page=25 dt-received= dt-revised= dt-accepted= dt-pub-year=2017 dt-pub=20170201 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Effect of Beginning Date of Intermittent Low Temperature Treatments on Flowering of Tray-grown Strawberry 'Nyoho' kn-title=処理開始時期がトレイ育苗したイチゴ‘女峰’に対する 間欠冷蔵処理の効果発現に及ぼす影響 en-subtitle= kn-subtitle= en-abstract= kn-abstract=　Intermittent low temperature storage is expected to be a new artificial flower-inducing treatment and becoming to be a practical procedure as it does not require expensive equipment or much energy cost. Tray-grown ‘Nyoho’ plants were placed in a refrigerator (15°C, in the dark) for 3 days and then transferred to a further outdoor shelter for 3 days. Plants were transferred at noon and this cycle was repeated twice (3D/3D). Such 3D/3D treatments were begun on August 22, 25, 28, 31, and September 3and the effectiveness on flowering was determined for 2 years. Both in 2012 and 2013, treatments begun before August 28 were less effective compared to the treatments begun on August 28 or later. Continuous 6 days of 15°C storage (6D) was effective to some extent, but 6D from August 25 was apparently less effective compared to those begun later. Both in intermittent and continuous treatments for ‘Nyoho’, it was confirmed that any flower-inducing effect became relatively small and unstable when the treatments were begun before 28 August in Okayama. en-copyright= kn-copyright= en-aut-name=KinjoaAkari en-aut-sei=Kinjoa en-aut-mei=Akari kn-aut-name=金城朱理 kn-aut-sei=金城 kn-aut-mei=朱理 aut-affil-num=1 ORCID= en-aut-name=HanadaAtsushi en-aut-sei=Hanada en-aut-mei=Atsushi kn-aut-name=花田惇史 kn-aut-sei=花田 kn-aut-mei=惇史 aut-affil-num=2 ORCID= en-aut-name=YoshidaYuichi en-aut-sei=Yoshida en-aut-mei=Yuichi kn-aut-name=吉田裕一 kn-aut-sei=吉田 kn-aut-mei=裕一 aut-affil-num=3 ORCID= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=4 ORCID= en-aut-name=YasubaKen-ichiro en-aut-sei=Yasuba en-aut-mei=Ken-ichiro kn-aut-name=安場健一郎 kn-aut-sei=安場 kn-aut-mei=健一郎 aut-affil-num=5 ORCID= en-aut-name=TanakaYoshiyuki en-aut-sei=Tanaka en-aut-mei=Yoshiyuki kn-aut-name=田中義行 kn-aut-sei=田中 kn-aut-mei=義行 aut-affil-num=6 ORCID= en-aut-name=YoshidaAtsuko en-aut-sei=Yoshida en-aut-mei=Atsuko kn-aut-name=吉田敦子 kn-aut-sei=吉田 kn-aut-mei=敦子 aut-affil-num=7 ORCID= affil-num=1 en-affil=Graduate School of Environmental and Life Science, Okayama University kn-affil=岡山大学大学院環境生命科学研究科 affil-num=2 en-affil=Graduate School of Environmental and Life Science, Okayama University kn-affil=岡山大学大学院環境生命科学研究科 affil-num=3 en-affil=Graduate School of Environmental and life Science, Okayama University kn-affil=岡山大学大学院環境生命科学研究科 affil-num=4 en-affil=Graduate School of Environmental and life Science, Okayama University kn-affil=岡山大学大学院環境生命科学研究科 affil-num=5 en-affil=Graduate School of Environmental and life Science, Okayama University kn-affil=岡山大学大学院環境生命科学研究科 affil-num=6 en-affil=Graduate School of Environmental and life Science, Okayama University kn-affil=岡山大学大学院環境生命科学研究科 affil-num=7 en-affil=Nozomi Farm Co. kn-affil=(有)のぞみふぁーむ en-keyword=artificial flower induction kn-keyword=artificial flower induction en-keyword=Fragaria x ananassa Duch. kn-keyword=Fragaria x ananassa Duch. en-keyword=low temperature storage kn-keyword=low temperature storage en-keyword=runner cutting kn-keyword=runner cutting END start-ver=1.4 cd-journal=joma no-vol=108 cd-vols= no-issue= article-no= start-page=5 end-page=13 dt-received= dt-revised= dt-accepted= dt-pub-year=2019 dt-pub=20190201 dt-online= en-article= kn-article= en-subject= kn-subject= en-title=Effect of boron deficiency on tip burn and malformed fruit incidence in strawberries kn-title=B（ホウ素）欠乏処理がイチゴのチップバーンおよび受精不良果発生に及ぼす影響 en-subtitle= kn-subtitle= en-abstract=　B（ホウ素）は植物にとって必須な微量要素であり，イチゴの受精不良果発生要因の1 つである．そこで2015年度と2016年度の2 回にわたりB 欠乏がイチゴの受精不良果発生に及ぼす影響について調査した．また，2016年度はB 欠乏処理後にB 回復処理を行い，その後のイチゴの果実形態の変化についても調査した．その結果，B欠乏処理を行うと蒸散機能の低い新葉や花芽においてチップバーンが発生し，種浮き果や部分不受精を主とした受精不良果が多発した．しかし，B 回復処理を行うことでこれらの症状が改善することが明らかになった．B は受精不良果発生に関係しており，欠乏条件下で根から吸収させると急速に若い成長中の組織に転流することが示されたことから，B 栄養をコントロールすることでB 不足によるイチゴの受精不良果発生を軽減できる可能性があると考えられる． kn-abstract=Boron (B) is an essential micro element for plants and plays important roles in the synthesis and functions of cell wall. B deficiency has been reported as one of the causes of fruit malformation in strawberries. We investigated the effect of B deficiency on flower and fruit development of forced strawberries for two cropping seasons (2015-2017). In the second season, B was resupplied for B-deficient plants and we investigated changes in fruit development. When B-free nutrient solutions were supplied, tip burn began to occur in newly emerging leaves and calyx 2 to 3 months later, and fruit malformation including seedy or only partly developed fruits with undeveloped achenes occurred frequently. However, these deficient symptoms were quickly disappeared by supplying B containing nutrient solutions. In conclusion, B nutrition is closely related to the occurrence of fruit malformation through fertility of pollen and pistils, and also development of receptacle tissue in strawberries. It should be possible to reduce fruit malformation in strawberries by proper control of B nutrition. en-copyright= kn-copyright= en-aut-name=SesumiMiho en-aut-sei=Sesumi en-aut-mei=Miho kn-aut-name=瀬角美穂 kn-aut-sei=瀬角 kn-aut-mei=美穂 aut-affil-num=1 ORCID= en-aut-name=YoshidaYuichi en-aut-sei=Yoshida en-aut-mei=Yuichi kn-aut-name=吉田裕一 kn-aut-sei=吉田 kn-aut-mei=裕一 aut-affil-num=2 ORCID= en-aut-name=KinjoAkari en-aut-sei=Kinjo en-aut-mei=Akari kn-aut-name=金城朱理 kn-aut-sei=金城 kn-aut-mei=朱理 aut-affil-num=3 ORCID= en-aut-name=HidakaKei en-aut-sei=Hidaka en-aut-mei=Kei kn-aut-name=日高啓 kn-aut-sei=日高 kn-aut-mei=啓 aut-affil-num=4 ORCID= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name=後藤丹十郎 kn-aut-sei=後藤 kn-aut-mei=丹十郎 aut-affil-num=5 ORCID= en-aut-name=YasubaKen-ichiro en-aut-sei=Yasuba en-aut-mei=Ken-ichiro kn-aut-name=安場健一郎 kn-aut-sei=安場 kn-aut-mei=健一郎 aut-affil-num=6 ORCID= en-aut-name=TanakaYoshiyuki en-aut-sei=Tanaka en-aut-mei=Yoshiyuki kn-aut-name=田中義行 kn-aut-sei=田中 kn-aut-mei=義行 aut-affil-num=7 ORCID= affil-num=1 en-affil=Graduate school of Environmental and Life Science kn-affil=岡山大学大学院　環境生命科学研究科 affil-num=2 en-affil=Graduate school of Environmental and Life Science kn-affil=岡山大学大学院　環境生命科学研究科 affil-num=3 en-affil=Graduate school of Environmental and Life Science kn-affil=岡山大学大学院　環境生命科学研究科 affil-num=4 en-affil=Asahi Kagaku Kogyo Co., Ltd.) kn-affil=旭化学工業 affil-num=5 en-affil=Graduate school of Environmental and Life Science kn-affil=岡山大学大学院　環境生命科学研究科 affil-num=6 en-affil=Graduate school of Environmental and Life Science kn-affil=岡山大学大学院　環境生命科学研究科 affil-num=7 en-affil=Graduate school of Environmental and Life Science kn-affil=岡山大学大学院　環境生命科学研究科 en-keyword=floral organs kn-keyword=floral organs en-keyword=Fragaria × ananassa Duch. kn-keyword=Fragaria × ananassa Duch. en-keyword=pistil fertility kn-keyword=pistil fertility en-keyword=receptacle growth kn-keyword=receptacle growth en-keyword=seedy fruit kn-keyword=seedy fruit END start-ver=1.4 cd-journal=joma no-vol=89 cd-vols= no-issue=1 article-no= start-page=22 end-page=29 dt-received= dt-revised= dt-accepted= dt-pub-year=2020 dt-pub=2020 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Effect of Defoliation on Blossom-end Rot Incidence and Calcium Transport into Fruit of Tomato Cultivars Under Moderate Water Stress en-subtitle= kn-subtitle= en-abstract= kn-abstract=The translocation of calcium (Ca) within the tomato plant and the causes of Ca deficiency, a factor associated with blossom-end rot (BER) in fruit, are still a matter of conjecture. The objective of this study was to determine the effect of defoliation on BER incidence and Ca transport into different size tomato fruit cultivars. Four experiments were conducted. The start and end dates for each experiment were; 14 March–2 May, 22 July–23 August, 30 August–7 October 2017, and 20 May–25 June 2018, for experiments 1, 2, 3, and 4, respectively. Five tomato cultivars including one large (‘Momotaro fight (MF)’, ≥ 200 g), three medium (‘Lui 60 (L60)’, ‘Tio cook (TC)’, and ‘Cindy sweet (CS)’, 30–80 g), and one small (‘Pepe (PP)’, ≤ 20 g) fruit cultivars, respectively, were grown under moderate water stress controlled by a combination of root zone restriction and solar mediated fertigation. Leaf area of plants was reduced by 20–30% by removing alternate leaflets on all leaves. Defoliation significantly reduced BER in all experiments. In experiment 4, no BER was observed in defoliated plants of L60 and PP, and in MF and TC, BER incidence decreased to a quarter of the control. Defoliation increased the fruit growth rate (FGR) in experiment 1, in which the temperature was the lowest, by a ratio of 1.42 and by 1.39 in experiment 4, in which the radiation was strongest and day length longest. Defoliation increased the rate of daily Ca transport into fruit (CTR) in MF, L60, TC, CS, and PP by average ratios of 1.64, 1.55, 1.35, 1.30, and 1.13, respectively. The increase in CTR in defoliated plants was highest in experiment 4 with a ratio of 1.68 followed by 1.37, 1.33, and 1.28 in experiments 1, 3, and 2, respectively. Defoliation increased both FGR and CTR and there were significant linear relationships between them. However, the degree of increase was larger in CTR than that in FGR, especially in the BER-sensitive large fruit cultivar MF, and defoliation increased the total Ca concentration in fruit accordingly. We conclude that under moderate water stress by root zone restriction and certain other BER inductive conditions, defoliation could be a promising approach to reduce BER incidence by improving Ca nutrition in susceptible large fruit cultivars. en-copyright= kn-copyright= en-aut-name=IndecheAnnah Khatenje en-aut-sei=Indeche en-aut-mei=Annah Khatenje kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=YoshidaYuichi en-aut-sei=Yoshida en-aut-mei=Yuichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=YasubaKen-ichiro en-aut-sei=Yasuba en-aut-mei=Ken-ichiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=TanakaYoshiyuki en-aut-sei=Tanaka en-aut-mei=Yoshiyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= affil-num=1 en-affil=Graduate School of Environmental and Life Science, Okayama University kn-affil= affil-num=2 en-affil=Graduate School of Environmental and Life Science, Okayama University kn-affil= affil-num=3 en-affil=Graduate School of Environmental and Life Science, Okayama University kn-affil= affil-num=4 en-affil=Graduate School of Environmental and Life Science, Okayama University kn-affil= affil-num=5 en-affil=Graduate School of Environmental and Life Science, Okayama University kn-affil= END start-ver=1.4 cd-journal=joma no-vol=109 cd-vols= no-issue= article-no= start-page=21 end-page=27 dt-received= dt-revised= dt-accepted= dt-pub-year=2020 dt-pub=20200201 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Defoliating to 12-15 leaves increases calcium concentration and decreases blossom-end rot incidence in fruit of tomato plant grown under moderate water stress en-subtitle= kn-subtitle= en-abstract= kn-abstract= The objectives of this study were to (i) determine the optimum number of whole leaves to retain on a tomato plant for effective blossom-end rot (BER) management and (ii) explore the relationship between shoot calcium (Ca) and fruit Ca in non-defoliated plants in two different sized fruit cultivars, a large-fruited cultivar ‘Momotaro fight’ and a medium-fruited cultivar ‘Cindy sweet’. Treatments involved maintaining 18, 15 and 12 leaves on a plant. All lateral shoots were removed regularly throughout the growing period except the shoot closest to the flowering truss in the 18-leaf treatment. At the length of 10cm, these shoots were sampled for real time Ca determination using a hand held Ca2+ meter. In the plants defoliated to 18 leaves, BER was higher in ‘Momotaro fight’ at 10% compared to 2% in ‘Cindy sweet’. Fruit growth rate was significantly increased by defoliation in ‘Momotaro fight’, however no significant difference was observed among treatments in ‘Cindy sweet’. Defoliating to 12 leaves increased daily Ca transport rate by 59% and 37% in ‘Momotaro fight’ and ‘Cindy sweet’, respectively. Defoliating to 12 leaves increased the water-soluble Ca concentration in the distal part of fruit by 34% and 14% in ‘Momotaro fight’ and ‘Cindy sweet’, respectively. In the plants defoliated to 18 leaves where only old yellowish leaves were removed, a significant steady decrease was observed in the concentration of water soluble Ca in the distal part of fruit with increase in truss order. There was a significant linear relationship between water-soluble Ca concentration in the distal part of the fruit and Ca concentration in the lateral shoot of plants defoliated to 18 leaves. We conclude that under moderate water stress by root zone restriction and also certain other BER inductive conditions, defoliation to 12–15 leaves on a tomato plant should be a promising approach for decreasing BER incidence in susceptible large fruit cultivars. en-copyright= kn-copyright= en-aut-name=Annah Khatenje Indeche en-aut-sei=Annah Khatenje Indeche en-aut-mei= kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=YoshidaYuichi en-aut-sei=Yoshida en-aut-mei=Yuichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=MiyajiDaisuke en-aut-sei=Miyaji en-aut-mei=Daisuke kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=YasubaKen-ichiro en-aut-sei=Yasuba en-aut-mei=Ken-ichiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=TanakaYoshiyuki en-aut-sei=Tanaka en-aut-mei=Yoshiyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= affil-num=1 en-affil=Graduate school of Environmental and Life Science, Okayama University kn-affil= affil-num=2 en-affil=Graduate school of Environmental and Life Science, Okayama University kn-affil= affil-num=3 en-affil=Field Science Center kn-affil= affil-num=4 en-affil=Graduate school of Environmental and Life Science, Okayama University kn-affil= affil-num=5 en-affil=Graduate school of Environmental and Life Science, Okayama University kn-affil= affil-num=6 en-affil=Graduate School of Agriculture, Kyoto University kn-affil= en-keyword=BER management kn-keyword=BER management en-keyword=defoliation kn-keyword=defoliation en-keyword=water-soluble Ca kn-keyword=water-soluble Ca en-keyword= lateral shoot Ca kn-keyword= lateral shoot Ca en-keyword=root zone restriction kn-keyword=root zone restriction END start-ver=1.4 cd-journal=joma no-vol=91 cd-vols= no-issue=1 article-no= start-page=58 end-page=67 dt-received= dt-revised= dt-accepted= dt-pub-year=2022 dt-pub=20220122 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Fasciation in Strawberry Floral Organs and Possible Implications for Floral Transition en-subtitle= kn-subtitle= en-abstract= kn-abstract=Fasciation in strawberry is characterized by an enlarged and flattened receptacle, clustering of flowers, and altered inflorescence architecture. However, the developmental process of fasciated flowers remains obscure. In this study, the fasciation incidence and developmental process in the primary fruit and inflorescence architecture were evaluated and compared for the non-susceptible cultivars, ‘Nyoho’ and ‘Sagahonoka’ and one of the most susceptible cultivars, ‘Ai-Berry’. The severity and frequency of flower and inflorescence fasciation was clearly greater in the vigorously growing large plants of ‘Ai-Berry’ compared to small plants and large plants of the other two cultivars. In ‘Ai-Berry’, the deformation of the large shoot apical meristem (SAM) into an oval shape was the initial symptom observed before and during floral transition. Such oval-shaped SAMs often differentiated two or more leaf primordia almost at the same time, which then developed into divided multiple vegetative SAMs before floral transition and linearly-fasciated SAMs during floral transition, respectively. The development of fasciation symptoms was observed after downregulation of FaTFL1. Although inflorescence or receptacle fasciation could be controlled when early and rapid floral induction was achieved by intermittent low-temperature treatment, severe fasciation was observed in late-flowered plants which were either not responsive or not subjected to this treatment. These results indicate that fasciation of floral organs may be triggered and develop during floral transition and that temperature fluctuations around boundary values between floral inhibition to induction may cause a half-finished or slowly processed floral transition and finally result in severe fasciation in vigorously growing ‘Ai-Berry’ plants. en-copyright= kn-copyright= en-aut-name=Thi CamNguyen en-aut-sei=Thi Cam en-aut-mei=Nguyen kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=SunagawaNaomichi en-aut-sei=Sunagawa en-aut-mei=Naomichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=SesumiMiho en-aut-sei=Sesumi en-aut-mei=Miho kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=KitamuraYoshikuni en-aut-sei=Kitamura en-aut-mei=Yoshikuni kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=TanakaYoshiyuki en-aut-sei=Tanaka en-aut-mei=Yoshiyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= en-aut-name=YasubaKen-ichiro en-aut-sei=Yasuba en-aut-mei=Ken-ichiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=7 ORCID= en-aut-name=YoshidaYuichi en-aut-sei=Yoshida en-aut-mei=Yuichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=8 ORCID= affil-num=1 en-affil=Graduate School of Environmental and Life Sciences, Okayama University kn-affil= affil-num=2 en-affil=Graduate School of Environmental and Life Sciences, Okayama University kn-affil= affil-num=3 en-affil=Graduate School of Environmental and Life Sciences, Okayama University kn-affil= affil-num=4 en-affil=Graduate School of Environmental and Life Sciences, Okayama University kn-affil= affil-num=5 en-affil=Graduate School of Agriculture, Kyoto University kn-affil= affil-num=6 en-affil=Graduate School of Environmental and Life Sciences, Okayama University kn-affil= affil-num=7 en-affil=Graduate School of Environmental and Life Sciences, Okayama University kn-affil= affil-num=8 en-affil=Graduate School of Environmental and Life Sciences, Okayama University kn-affil= END start-ver=1.4 cd-journal=joma no-vol=111 cd-vols= no-issue= article-no= start-page=1 end-page=6 dt-received= dt-revised= dt-accepted= dt-pub-year=2022 dt-pub=20220201 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Effect of Re-Drying and Storage after 10°C Wet Treatment on Germination and Growth of Five Eustoma grandiflorum (Raf.) Shinn Cultivars en-subtitle= kn-subtitle= en-abstract= kn-abstract=In Eustoma (Eustoma grandiflorum (Raf.) Shinn) cultivation in southwestern Japan, cold imbibition treatment of seeds is important to accelerate bolting and flowering of seedlings grown in the summer season. In order to facilitate the handling of cold imbibed seeds, re-drying treatment (RDT) after wet treatment at 10°C for 35 days in dark conditions (WT10°C) is considered to be an essential technique. The investigation of five Eustoma cultivars ‘Exe Lavender’, ‘Orb Snow’, ‘Philia Lavender’ , ‘Dure Lavender’ and ‘Exe Light Pink’ was to find the germinability and the growth characteristics of Eustoma when re-drying and storage at 10°C for 30 days were applied immedietely after ending the WT10°C. The results showed that germination and growth responses differed among Eustoma cultivars. RDT seeds and non- RDT seeds of ‘Exe Lavender’, ‘Orb Snow’ and ‘Philia Lavender’ had a similar germination rate. However, germination rate of RDT seeds in ‘Dure Lavender’ and ‘Exe Light Pink’ was lower than that of non-RDT seeds. There was no significant difference in cut-flower quality grown from RDT and non-RDT among ‘Exe Lavender’, ‘Orb Snow’ and ‘Dure Lavender’. However, bolting and flowering rate of RDT in ‘Dure Lavender’ and ‘Exe Light Pink’ were lower than those of non-RDT. This suggested that it might not be useful to apply RDT after the cold-wet treatment of Eustoma seed due to lower germination or bolting rates in some cultivars. Further investigation of cold-wet exposure and dehydrating conditions is required to establish RDT procedures for Eustoma cultivars. en-copyright= kn-copyright= en-aut-name=Thao Thu Phan en-aut-sei=Thao Thu Phan en-aut-mei= kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=FukushimaKeigo en-aut-sei=Fukushima en-aut-mei=Keigo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=TanakaYoshiyuki en-aut-sei=Tanaka en-aut-mei=Yoshiyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=YasubaKen-ichiro en-aut-sei=Yasuba en-aut-mei=Ken-ichiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=YoshidaYuichi en-aut-sei=Yoshida en-aut-mei=Yuichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= affil-num=1 en-affil=Graduate School of Environmental and Life Science kn-affil= affil-num=2 en-affil=Hiroshima Prefectural Technology Research Institute, Agricultural Technology Research Center kn-affil= affil-num=3 en-affil=Graduate School of Environmental and Life Science kn-affil= affil-num=4 en-affil=Graduate School of Environmental and Life Science kn-affil= affil-num=5 en-affil=Graduate School of Environmental and Life Science kn-affil= affil-num=6 en-affil=Graduate School of Environmental and Life Science kn-affil= en-keyword=bolting kn-keyword=bolting en-keyword=chilling kn-keyword=chilling en-keyword=cut flower quality kn-keyword=cut flower quality en-keyword=dehydrate kn-keyword=dehydrate en-keyword=flowering kn-keyword=flowering END start-ver=1.4 cd-journal=joma no-vol=113 cd-vols= no-issue= article-no= start-page=7 end-page=10 dt-received= dt-revised= dt-accepted= dt-pub-year=2024 dt-pub=20240201 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=Effect of seed cold PEG-priming and subsequent long storage on germination, growth and flowering of Eustoma grandiflorum（Raf.）Shinn ʻExe Lavenderʼ en-subtitle= kn-subtitle= en-abstract= kn-abstract=Cold wet treatment is frequently applied to Eustoma seeds to enhance the bolting rate of plants grown under high temperatures. Our previous study indicated that cold PEG‒primed Eustoma seeds could maintain their germination rate and bolting rate even after being re‒dried for 30days and grown under high temperatures. The present study aimed to investigate whether prolonged storage after cold PEG‒priming affect the germination, growth, and flowering of Eustoma ‘Exe Lavender’ seedling. Seeds were initially cold‒primed with water or PEG‒6000 at ‒1.5 MPa for 5 weeks at 10°C in the dark and were then subjected to re‒drying and storage for 30, 60, 90 and 360days at 10°C. After 360days of storage, cold PEG‒primed seeds germinated earlier and more effectively than cold hydro‒primed seeds. Compared to the results after 30days of storage, plants grown from 360days exhibited similar bolting rate, days to bolting, bolting node and flowering rate, cut flower length and number of flower node. These results suggest that ‘Exe Lavender’ seeds can germinate and develop well even after 360days of storage and under high temperature conditions when subjected to cold PEG‒6000 treatment. en-copyright= kn-copyright= en-aut-name=PhanThao Thu en-aut-sei=Phan en-aut-mei=Thao Thu kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=1 ORCID= en-aut-name=FukushimaKeigo en-aut-sei=Fukushima en-aut-mei=Keigo kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=2 ORCID= en-aut-name=TanakaYoshiyuki en-aut-sei=Tanaka en-aut-mei=Yoshiyuki kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=3 ORCID= en-aut-name=YasubaKen-ichiro en-aut-sei=Yasuba en-aut-mei=Ken-ichiro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=4 ORCID= en-aut-name=YoshidaYuichi en-aut-sei=Yoshida en-aut-mei=Yuichi kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=5 ORCID= en-aut-name=GotoTanjuro en-aut-sei=Goto en-aut-mei=Tanjuro kn-aut-name= kn-aut-sei= kn-aut-mei= aut-affil-num=6 ORCID= affil-num=1 en-affil=Graduate School of Environmental and Life Science, Okayama University kn-affil= affil-num=2 en-affil=Hiroshima Prefectural Technology Research Institute, Agricultural Technology Research Center kn-affil= affil-num=3 en-affil=Graduate School of Environmental and Life Science, Okayama University kn-affil= affil-num=4 en-affil=Graduate School of Environmental and Life Science, Okayama University kn-affil= affil-num=5 en-affil=Graduate School of Environmental and Life Science, Okayama University kn-affil= affil-num=6 en-affil=Graduate School of Environmental and Life Science, Okayama University kn-affil= en-keyword=bolting kn-keyword=bolting en-keyword=chilling kn-keyword=chilling en-keyword=dehydrate kn-keyword=dehydrate en-keyword=long storage kn-keyword=long storage en-keyword=PEG-6000 kn-keyword=PEG-6000 END