start-ver=1.4 cd-journal=joma no-vol=41 cd-vols= no-issue= article-no= start-page=9 end-page=13 dt-received= dt-revised= dt-accepted= dt-pub-year=2019 dt-pub=20190401 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=モモ‘紅清水’における赤肉果の音響振動法による非破壊判別技術の検討 en-subtitle= kn-subtitle= en-abstract= kn-abstract= en-copyright= kn-copyright= en-aut-name=FukudaFumio en-aut-sei=Fukuda en-aut-mei=Fumio kn-aut-name=福田文夫 kn-aut-sei=福田 kn-aut-mei=文夫 aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=近藤毅典 kn-aut-sei=近藤 kn-aut-mei=毅典 aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=藤井雄一郎 kn-aut-sei=藤井 kn-aut-mei=雄一郎 aut-affil-num=3 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=河井崇 kn-aut-sei=河井 kn-aut-mei=崇 aut-affil-num=4 ORCID= en-aut-name=HiranoKen en-aut-sei=Hirano en-aut-mei=Ken kn-aut-name=平野健 kn-aut-sei=平野 kn-aut-mei=健 aut-affil-num=5 ORCID= en-aut-name=MorinagaKunihisa en-aut-sei=Morinaga en-aut-mei=Kunihisa kn-aut-name=森永邦久 kn-aut-sei=森永 kn-aut-mei=邦久 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=岡山県農林水産総合センター農業研究所 affil-num=4 en-affil= kn-affil=岡山大学大学院環境生命科学研究科 affil-num=5 en-affil= kn-affil=岡山大学大学院環境生命科学研究科 affil-num=6 en-affil= kn-affil=岡山大学大学院環境生命科学研究科 END start-ver=1.4 cd-journal=joma no-vol=106 cd-vols= no-issue= article-no= start-page=43 end-page=49 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=Fruit quality control using water management and simple water status detection methods in fruit tree leaves kn-title=果樹における水分ストレスによる 果実成分の制御と葉内水分の計測 en-subtitle= kn-subtitle= en-abstract= kn-abstract= In fruit production, water status during the maturation season has a significant effect on fruit quality, influencing not only sugar but also organic acid and amino acid contents. Water management technology, therefore, is important for improving fruit quality and maintaining yield in Japan. This study firstly discusses extensive research into the effect of irrigation control on each component of grape fruit juice. Secondly, given that real time monitoring of leaf moisture content is essential to controlling water status, a simple estimation method is described. This method involved fixing a “water stress indicator” to the abaxial side of a leaf; the indicator changed color depending on the water status, which could then be evaluated. The water status was assessed against an indicator color scale, based on a property of cobalt (II) chloride that causes it to change color, from blue to light pink, through a hydration reaction between the indicator sheet and the water evaporating from the leaf to which the indicator sheet is affixed. By using this method, estimates were made of decreases under water stress conditions in the water evaporation rate from satsuma mandarin, grapes, peaches, and Japanese pear, based on the time required for the indicator sheet to change color. Thirdly, a new electrical sensor method to investigate water status in fruit tree leaves was developed, and used to measure electro pulse period; the relationship with transpiration rate was then evaluated using a leaf porometer. Pulse period was found to be consistently correlated with transpiration rate. The results indicate that the water status of fruit tree leaves can be estimated by measuring pulse period. This provides an accurate and quick method for detecting water stress, which could potentially be used for other crops that are particularly sensitive to water stress. en-copyright= kn-copyright= en-aut-name=MorinagaKunihisa en-aut-sei=Morinaga en-aut-mei=Kunihisa kn-aut-name=森永邦久 kn-aut-sei=森永 kn-aut-mei=邦久 aut-affil-num=1 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 en-keyword=fruit quality kn-keyword=fruit quality en-keyword=water status kn-keyword=water status en-keyword=patch test kn-keyword=patch test en-keyword=pulse period kn-keyword=pulse period END start-ver=1.4 cd-journal=joma no-vol=35 cd-vols= no-issue= article-no= start-page=18 end-page=22 dt-received= dt-revised= dt-accepted= dt-pub-year=2013 dt-pub=20130401 dt-online= en-article= kn-article= en-subject= kn-subject= en-title= kn-title=鉢植えブドウ‘デラウェア’における竹粉マルチが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=福田文夫 kn-aut-sei=福田 kn-aut-mei=文夫 aut-affil-num=1 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=近藤毅典 kn-aut-sei=近藤 kn-aut-mei=毅典 aut-affil-num=2 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=山本昭 kn-aut-sei=山本 kn-aut-mei=昭 aut-affil-num=3 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=清瀬真美 kn-aut-sei=清瀬 kn-aut-mei=真美 aut-affil-num=4 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=平野健 kn-aut-sei=平野 kn-aut-mei=健 aut-affil-num=5 ORCID= en-aut-name= en-aut-sei= en-aut-mei= kn-aut-name=森永邦久 kn-aut-sei=森永 kn-aut-mei=邦久 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 affil-num=5 en-affil= kn-affil=岡山大学大学院環境生命科学研究科 affil-num=6 en-affil= kn-affil=岡山大学大学院環境生命科学研究科 END start-ver=1.4 cd-journal=joma no-vol=102 cd-vols= no-issue= article-no= start-page=53 end-page=62 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=Development of New Irrigation System based on Water Relations Research for Citrus Fruit Production kn-title=カンキツの水分生理特性の解析に 基づく「マルチ・ドリップ栽培技術」の開発 en-subtitle= kn-subtitle= en-abstract= kn-abstract=A new cultivation system using drip irrigation and liquid fertilization methods combined with year-round plastic mulching system (DLYM system) was developed, expecting high quality and stable fruit production based on the research results on water relations of Satsuma mandarin (Citrus unshiu M.), where sugar accumulation in fruit was caused by an increase in translocation of photosynthates into fruit under drought stress.  Water and/or nutrient solution is automatically supplied through the drip tubes laid under mulching sheets to give adequate water stress. Fruit quality was well controlled through the DLYM system. Sugar content of fruit increased by 2 Brix %, and functional components such as β‒cryptoxantin and β‒caroten increased by about 50% compared to juice from fruit grown on control trees. In addition, new technologies were developed, such as hydraulic design support system and water stress indicator sheet. en-copyright= kn-copyright= en-aut-name=MorinagaKunihisa en-aut-sei=Morinaga en-aut-mei=Kunihisa kn-aut-name=森永邦久 kn-aut-sei=森永 kn-aut-mei=邦久 aut-affil-num=1 ORCID= affil-num=1 en-affil= kn-affil=岡山大学 en-keyword=water stress kn-keyword=water stress en-keyword=drip irrigation kn-keyword=drip irrigation en-keyword=mulching kn-keyword=mulching en-keyword=satuma mandarin kn-keyword=satuma mandarin END