| Project/Area Number |
21580012
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Crop science/Weed science
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| Research Institution | Shinshu University |
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Principal Investigator |
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| Co-Investigator(Kenkyū-buntansha) |
井上 直人 信州大学, 農学部, 教授 (80232544)
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| Project Period (FY) |
2009 – 2011
|
| Project Status |
Completed (Fiscal Year 2011)
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| Budget Amount *help |
¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2011: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000)
Fiscal Year 2010: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2009: ¥2,990,000 (Direct Cost: ¥2,300,000、Indirect Cost: ¥690,000)
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| Keywords | 普通ソバ / 土壌水分 / 水ストレス / 受精 / 登熟 / 窒素吸収 / 葉温 / 倒伏指数 / 土壌過湿 / 収量 / 葉面積 / 茎重 / 挫折部モーメント / 受精率 / 不完全花率 / crop water stress index / 普涌ソバ / 乾物重 / 光合成速度 / 出液 / 下位節間長 / 挫折強度 |
|---|
| Research Abstract |
Common buckwheat variety Shinano No.1 was cultivated under various soil moisture conditions aiming at the improvement of yield and grain quality. Buckwheat plants grown under relatively excessive moisture conditions showed increased nitrogen absorption and tended to have larger biomass and yield. In contrast, those grown under dry conditions showed smaller amont of nitrogen absorption and lower fertilization rate of flowers, the former resulting in smaller biomass and the latter resulting in lower yield. Lodging registance of buckwheat plants grown under excessive soil moisture condtions was clarified to be closely correlated to the thickness of main stem. Therefore, water management to control soil moisture as high as possible avoiding decrease in stem thickness was suggested to improve both yield and grain quality.
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