result 985 件
| JaLCDOI | 10.18926/fest/11443 |
|---|---|
| FullText URL | 012_083_089.pdf |
| Author | Khan Md. H. R.| Rahman Md. K.| Rouf A. J. M. A.| Sattar G. S.| Akhtar M. S.| Oki, Yoko| Adachi, Tadashi| |
| Abstract | The pH values in the profiles of unburnt (agricultural land) soils were found to increase as a function of soil depth and burning (400 to 1000℃) of the soils increased average pH by 8%. The average sand content of the burnt (soil around brick kilns) soil profiles was increased by 245%, while 39 and 36% decreased the silt and clay contents. Soil organic carbon (Corg) in the unburnt soils (0-20 cm) at different agro-ecological zones in the eastern region of Bangladesh ranged from 0.8 and 1.4%, whereas the content of microbial biomass carbon (Cmic) in the studied unburnt soils ranged between 5 and 7% of the total Corg, suggesting that the microbial biomass releasing considerable amounts of carbon in soil while burning of the soils drastically reduced this contribution to about 1%. The values of soil Cmic in the unburnt soils were approximately 2 to 6 times higher in the topsoils than the subsoils (20-60 cm). Variable rainfall, temperature and soil fertility had an overriding influence, which was reflected by the average minimum (276 μg g(-1)) and maximum (439) amounts of soil Cmic in Moulvibazar and Cox' Bazar sites. The Cmic decreased upon soil burning by 92% of its original average value (346 μg g(-1)) in the soil profile of up to 100 cm. Burning of topsoils strikingly increased the Corg/Cmic ratio by about 6 to 9 times, while reduced the C/N ratio by about 1.5 to 2.5 times. The average loss of Corg, available and total N due to burning of the soils were 66, 72 and 44% (increase over average content of unburnt soil: IOAC), respectively, which suggests that the burning of the soils offset the essential roles of soil microorganisms, reduced soil fertility and soil microbial contribution. |
| Keywords | brick burning C/N ratio microbial biomass carbon soil organic carbon ratio of microbial biomass to organic carbon. |
| Publication Title | 岡山大学環境理工学部研究報告 |
| Published Date | 2007-03-15 |
| Volume | volume12 |
| Issue | issue1 |
| Start Page | 83 |
| End Page | 89 |
| ISSN | 1341-9099 |
| language | English |
| File Version | publisher |
| NAID | 120002313396 |
| Title Alternative | ホウレンソウ種子に存在するα-グルコシダーゼの分子多型変化 |
|---|---|
| FullText URL | 005_001_001_009.pdf |
| Author | Furui, Satoshi| Sugimoto, Manabu| Suzuki, Yukio| |
| Abstract | Two molecular forms of α-glucosidase were isolated from spinach seeds after storage at 4℃ by CM-cellulose column chromatography and gel filtration. The molecular masses of α-glucosidase A and B were 78 kDa and 82 kDa by SDS-PAGE, and 62 kDa and 70 kDa by gel filtration, respectively. α-Glucosidase A had high activity not only toward maltooligosaccharides but also toward α-glucans. The optimum pH was 4.5-5.5 and about 50% of the activity remained after incubation at 65℃ for 20 min. On the other hand, α-glucosidase B had high activity toward maltooligosaccharides but faint activity toward α-glucans. The optimum pH was 5.0 and no activity was found after incubation at 65℃ for 20 min. The enzymatic and immunological properties of α-glucosidase A and B were similar to those of α-glucosidase. Ⅰor Ⅱ, and α-glucosidase Ⅲ or Ⅳ, isolated from spinach seeds without 4℃ storage, respectively. These findings suggest that the α-glucosidase in spinach seeds is modified to be two molecular forms. |
| Keywords | Spinach α-Glucosidase Multiple molecular forms |
| Publication Title | 岡山大学資源生物科学研究所報告 |
| Published Date | 1997 |
| Volume | volume5 |
| Issue | issue1 |
| Start Page | 1 |
| End Page | 9 |
| ISSN | 0916-930X |
| language | English |
| File Version | publisher |
| Title Alternative | The Characteristics of Trace Metal Distribution of Artificial and Natural-Origin Suspended Particulate Matter (SPM) by grain size |
|---|---|
| FullText URL | 006_001_029_041.pdf |
| Author | Muramoto, Shigeki| Maitani, Toshihiko| Hiraoka, Naoko| Aoyama, Isao| |
| Abstract | Air pollution caused by suspended particulate matter (SPM) has increased remarkedly in industrial areas, and this has become an emergency issue in the global environment. Atomospheric SPM influences the local ecosystem including various plants and animals. It is necessary to examine the distribution characteristics of such trace metals in fine particulates (especially those with a diameter (φ) of less than 2.1μm). The Environment Agency of the Japanese goverment will complete analysis of the a concentration of suspended particulate matter less than 2.4μm by the end of 1999, and will be examining the relationship between the concentration of suspended particulate matter (0.1-9.0μm) with consideration given to the particle size throughout two years. It became clear that the metals of artificial origin such as Pb, V, Cd, Ni, Cr, existed in fine particulates (0.1 or more 2.0μm). By contrast, the metals of natural origin, such as Ti, Mn, Mg, Sr, mainly existed in coarse Area in Japan. |
| Keywords | Atomospheric Suspended particulate matter (SPM) Natural-origin metal Artificial-origin metal Biological effects |
| Publication Title | 岡山大学資源生物科学研究所報告 |
| Published Date | 1999 |
| Volume | volume6 |
| Issue | issue1 |
| Start Page | 29 |
| End Page | 41 |
| ISSN | 0916-930X |
| language | Japanese |
| File Version | publisher |
| Title Alternative | QTL Mapping for Water Sensitivity in Barley Seeds |
|---|---|
| FullText URL | 006_001_021_028.pdf |
| Author | Iwasa, Tomohiko| Takahashi, Hidekazu| Takeda, Kazuyoshi| |
| Abstract | Sensitivity to water condition during germination is an important character in malting barley because it affects malt poduction. Water sensitivity in malting barley is defined as the defference in germination percentage between the seeds in standard and excess-water conditions. Usually standard and excess-water condition means 4 and 8 ml water in a 90 mm perti dish, respectively. Takeda and Fukuyama (1983) examined more than 4,000 barley accessions and found 0～100% water sensitivity. This means complete to no suppression of germination by an excess-water condition. In this study, quantiative trait loci (QTL) analysis was applied to analize the inheritance of water sensitivity. Two sets of doubled haploid (DH) populations derived from Steptoe×Morex (S/M) and Harrington×TR306 (H/T) crosses,were grown in the experiment field of the Research Institute for Bioresources, Okayama University. Bulbosum method was adapted to develop DH lines (Chen and Hayes 1989). Water sensitivities of 150 (S/M) and (H/T) lines and their parents were evaluated using 50 seeds each and the germination test (25℃, 4 days) was repeated four times. Water sensitivity showed a large variation (Fig.1) and the heritability of the trait was 0.78 and 0.72 in S/M and H/T, respectively, indicating that about three-quarters of the phenotypic variance was genetic in origin. Three (S/M) and one (H/T) significant QTL were detected and 23% (S/M) and 25% (H/T) of the phenotypic variance was explained by the QTL. These QTL were located on chromosomes 2H,3H,6H and 7H (Table 1, Fig. 2). QTL relating to germination traits were lacated near the QTL controlling water sensitivity (Fig. 3). Interaction among the QTL was small (Table 2). Marker-assisted selection was effective (Table 3). |
| Keywords | barley water sensitivity QTL analysis |
| Publication Title | 岡山大学資源生物科学研究所報告 |
| Published Date | 1999 |
| Volume | volume6 |
| Issue | issue1 |
| Start Page | 21 |
| End Page | 28 |
| ISSN | 0916-930X |
| language | Japanese |
| File Version | publisher |
| Title Alternative | Estimation of Turbulent Fluxes by Gradient Method with Surface Temperatures of Rice Plant Canopy |
|---|---|
| FullText URL | 006_001_001_011.pdf |
| Author | Miyashita, Koichi| Maitani, Toshihiko| |
| Abstract | Micrometeorological observations including turbulent fluxes and canopy surface temperatures were made in paddy in the summer of 1997. The sensible and latent heat fluxes were estimated by the gradient method under the assumption of similarity between the turbulent exchange coefficient for momentum and that for heat and water vapor. The surface temperatures measured by a thermal imager and water vapor pressures estimated from surface temperatures and relative humidity were used for temperature and water vapor at the height(d+z0) of U=0, where d is the displacement height, z0 the roughness length and U the mean wind velocity. The sensible and latent heat fluxes estimated by the gradient method depicted typical diurnal varietions. The turbulent fluxes by the present method and eddy correlation method showed fairly good agreement, especially for latent heat fluxes. These results confirmed that this method is a promising one. |
| Keywords | Surface temperature Rice plant canopy Thermal imager Turbulent fluxes |
| Publication Title | 岡山大学資源生物科学研究所報告 |
| Published Date | 1999 |
| Volume | volume6 |
| Issue | issue1 |
| Start Page | 1 |
| End Page | 11 |
| ISSN | 0916-930X |
| language | Japanese |
| File Version | publisher |
| Title Alternative | ダイズ種子の冠水抵抗性の品種間差とダイアレル分析 |
|---|---|
| FullText URL | 003_001_035_041.pdf |
| Author | Hou, Fwu-Fenn| Thseng, Fu-Sheng| Wu, Shu-Tu| Takeda, Kazuyoshi| |
| Abstract | Seven hundred and thirty varieties of soybean from different sources were evaluated for seed flooding tolerance by the seed germination test after a 4-day soaking at 25℃. The inheritance of seed flooding tolerance was also analyzed with a 6 x diallel cross. A large variation in seed flooding tolerance existed in the soybean germplasm as reflected in the germination rate which ranged from 0 to 100%. Most of the varieties tested were sensitive to seed flooding, and only 4% of the tested varieties showed a high tolerance (germination rate >90%). Seed flooding tolerance was controlled by both additive and dominance genes and a small number of effective factors and high narrow sense heritability in diallel analysis indicate that the selection for tolerance can effectively be done in early generations. |
| Keywords | Glycine max Seed flooding tolerance Diallel analysis Germination Varietal difference |
| Publication Title | 岡山大学資源生物科学研究所報告 |
| Published Date | 1995 |
| Volume | volume3 |
| Issue | issue1 |
| Start Page | 35 |
| End Page | 41 |
| ISSN | 0916-930X |
| language | English |
| File Version | publisher |
| Title Alternative | Sorghum Resistance to the Sugarcane Aphid, Melanaphis sacchari (Zehntenr) Amounts of Surface Wax and Nutritional Components |
|---|---|
| FullText URL | 003_001_027_034.pdf |
| Author | Tsumuki, Hisaaki| Kanehisa, Katsuo| Moharramipour, Saeid| |
| Abstract | The differences in the amounts of leaf surface wax and nutritional components such as sugar and free amino acids were compared among resistant (PE 954177), moderately resistant (IS 84) and susceptible (Redlan B) sorghum varieties to the sugarcane aphid. Melanaphis sacchari (Zehntner). (1) The kind of aphid appearing on the leaves of the sorghum varieties was only the sugarcane aphid, Melanaphis sacchari in the field. The number of aphids infesting a leaf was ca 0,30 and 3,500 in the resistant, moderately resistant and susceptible varieties at the middle of August, respectively. (2) The amount of leaf surface wax was approximately constant among these three varieties. (3) The total sugar content was slightly higher in the two resistant varieties than in the susceptible variety. (4) The total free amino acid concentration was higher in the two resistant varieties than in the susceptible variety. (5) These findings suggest that neither leaf surface wax nor nutritional components seem to affect the aphid populations on the leaves of the three sorghum varieties, showing that biogenic substances such as dhurrin, benzylalcohol, p-hydroxybenzaldehyde, aconitic acide, etc. may affect the aphid populations. |
| Keywords | Sorghum Sugarcane aphid Melanaphis sacchari Leaf surface wax Amino acid |
| Publication Title | 岡山大学資源生物科学研究所報告 |
| Published Date | 1995 |
| Volume | volume3 |
| Issue | issue1 |
| Start Page | 27 |
| End Page | 34 |
| ISSN | 0916-930X |
| language | Japanese |
| File Version | publisher |
| Title Alternative | Diallel Analysis for the Percentage of Grains with Hull Rupture in F2 Populations of Two-rowed Barley |
|---|---|
| FullText URL | 002_001_079_089.pdf |
| Author | Wu, Jiri| Takeda, Kazuyoshi| Kanatani, Ryoichi| |
| Abstract | Half diallel F2 populations crossed among eight two-rowed barley varieties with warious percentages of hull ruptured grains were raised to analyze the inheritance of the trait. The percentage of grains with hull rupture varied from 0 to 87% among the parents. The diallel analysis revealed the following: the trait was predominantly controlled by the additive genes, and the dominance effect of some parents was also significant. However, the epistatic effect of the genes was not significant. The average dominance was 0.97. The heritability value was estimated as 0.57 and 0.91 in a narrow and a broad sense, respectivelly. The percentage of grains with hull rupture showed continuous and transgressive segregations in 28 F2 populations derived from half diallel crosses among eight parents. Heritability of the trait in a broad sense was 0.43~0.80(0.65 on average) in 28 F2 populations. |
| Keywords | Barley Grain quality Hull rupture Diallel analysis Heritability |
| Publication Title | 岡山大学資源生物科学研究所報告 |
| Published Date | 1994 |
| Volume | volume2 |
| Issue | issue1 |
| Start Page | 79 |
| End Page | 89 |
| ISSN | 0916-930X |
| language | Japanese |
| File Version | publisher |
| Title Alternative | Genetical Studies on Callus Growth and Plant Regeneration from Immature Embryos in Barley |
|---|---|
| FullText URL | 002_001_043_053.pdf |
| Author | Mano, Yoshiro| Rikiishi, Kazuhide| Yasuda, Shozo| |
| Abstract | Immature embryos of 99 varieties of barley were cultured to investigate the ability of callus growth and plant regeneration. These two in vitro traits showed wide and continuous variations among the barley varieties tested. Ability of callus growth, which were evaluated by callus diameter ranged from 3.9mm to 11.2mm, and ability of plant regeneration from the calli ranged from 0% to 100%. A set of complete diallel crosses was made using six cultivars as the parents which differed in ability of callus growth and plant regeneration. The Vr/Wr graphical analysis showed that there were epistasis, or interaction among nonallelic genes for callus growth. As to ability of plant regeneration, no epistasis existed in the subdiallel without P1 (J232) which showed high specific combining ability, and it was controlled by a simple additive dominance genetic system. The mean degree of dominance(0.42) was relatively low and the broad(0.86) and narrow(0.78) sense heritabilities were high. |
| Keywords | Barley Tissue culture Plant regeneration Diallel analysis |
| Publication Title | 岡山大学資源生物科学研究所報告 |
| Published Date | 1994 |
| Volume | volume2 |
| Issue | issue1 |
| Start Page | 43 |
| End Page | 53 |
| ISSN | 0916-930X |
| language | Japanese |
| File Version | publisher |
| Title Alternative | タバコ懸濁培養細胞におけるアルミニウムの二価鉄、銅およびカドミウム毒性に対する影響 |
|---|---|
| FullText URL | 002_002_181_190.pdf |
| Author | Yamamoto, Yoko| Chang, Yi-Chieh| Ono, Kanji| Matsumoto, Hideaki| |
| Abstract | The effects of aluminum (Al) on the cytotoxicity of ferrous iron (Fe(Ⅱ)), copper(Cu) and cadmium(Cd) were studied. Log-phase cells were treated with either FeSO4,CuSO4, or CdCl2 in the presence or absence of AlCl3(120μM) for 18h at pH 4.0. After the treatment, the viability was determined as relative growth of the metal-treated cells to the untreated control cells during the post-treated culture. A single treated with either Al, Fe(Ⅱ) or Cd did not inhibit the growth at the metal concerntrations up to 300 μM, 200 μM and 500 μM, respectively, whereas the growth was markedly inhibited at 15 μM Cu. Thus,the cells were relatively insensitive to Al, Fe(Ⅱ) and Cd and sensitive to Cu. When cells were treated with both Fe(Ⅱ)(120 μM)and Al(120μM), the growth was significantly inhibited and the cellular contents of both Al and Fe increased synergistically. After the treatment with Cu(0 to 10 μM) with or without Al, the cells grew more vigorously when they were treated in the presence of Al, althrouh the Cu content of the cells were not alterd by Al. The presence of Al during the treatmemt with Cd(0 to 2 μM) had no effect on the degree of growth inhibition by Cd. Thus, Al interacts with the toxicity of Fe(Ⅱ), Cu and Cd in different manners; synergistic with Fe(Ⅱ), antagonistic with Cu and apparently no effeco on Cd. |
| Keywords | Aluminum Antagonistic Nicotiana tabacum Suspension culture Synergistic |
| Publication Title | 岡山大学資源生物科学研究所報告 |
| Published Date | 1994 |
| Volume | volume2 |
| Issue | issue2 |
| Start Page | 181 |
| End Page | 190 |
| ISSN | 0916-930X |
| language | English |
| File Version | publisher |
| Author | Inaba, Hideo| Ozaki, Koichi| Nozu, Shigeru| |
|---|---|
| Published Date | 1993-11-25 |
| Publication Title | 日本機械学會論文集 B編 |
| Volume | volume59 |
| Issue | issue567 |
| Content Type | Journal Article |
| Author | Inaba, Hideo| Imai, Seishi| |
|---|---|
| Published Date | 1995-06-25 |
| Publication Title | 日本機械学會論文集 B編 |
| Volume | volume61 |
| Issue | issue586 |
| Content Type | Journal Article |
| Author | Inaba, Hideo| Takeya, Kengo| Nozu, Shigeru| |
|---|---|
| Published Date | 1993-04-25 |
| Publication Title | 日本機械学會論文集 B編 |
| Volume | volume59 |
| Issue | issue560 |
| Content Type | Journal Article |
| Author | Inaba, Hideo| Morita, Shinichi| Nagaya, Motohiro| Nozu, Shigeru| |
|---|---|
| Published Date | 1992-08-25 |
| Publication Title | 日本機械学會論文集 B編 |
| Volume | volume58 |
| Issue | issue552 |
| Content Type | Journal Article |
| Author | Ozaki, Koichi| Inaba, Hideo| |
|---|---|
| Published Date | 1996-02-25 |
| Publication Title | 日本機械学會論文集 B編 |
| Volume | volume62 |
| Issue | issue594 |
| Content Type | Journal Article |
| Author | Nozu, Shigeru| Honda, Hiroshi| Kobayashi, Tsutomu| Inaba, Hideo| |
|---|---|
| Published Date | 1991-01-25 |
| Publication Title | 日本機械学會論文集 B編 |
| Volume | volume57 |
| Issue | issue533 |
| Content Type | Journal Article |
| Author | Inaba, Hideo| Ootake, Hideo| |
|---|---|
| Published Date | 1990-10-25 |
| Publication Title | 日本機械学會論文集 B編 |
| Volume | volume56 |
| Issue | issue530 |
| Content Type | Journal Article |
| Author | Tamura, Takashi| |
|---|---|
| Published Date | 1995-02-01 |
| Publication Title | 岡山大学農学部学術報告 |
| Volume | volume84 |
| Issue | issue1 |
| Content Type | Departmental Bulletin Paper |
| Author | Murakami, Kenji| Nishioka, Junko| Matsubara, Sachiko| |
|---|---|
| Published Date | 1998-02 |
| Publication Title | 岡山大学農学部学術報告 |
| Volume | volume87 |
| Issue | issue1 |
| Content Type | Departmental Bulletin Paper |
| Author | Nakauma, Makoto| Iriyama, Takuya| Murata, Yoshiyuki| Tada, Mikiro| |
|---|---|
| Published Date | 2000-02 |
| Publication Title | 岡山大学農学部学術報告 |
| Volume | volume89 |
| Issue | issue1 |
| Content Type | Departmental Bulletin Paper |
