| Project/Area Number |
24658013
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Single-year Grants |
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| Research Field |
Crop science/Weed science
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| Research Institution | Hokkaido University |
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Principal Investigator |
JITSUYAMA Yutaka 北海道大学, (連合)農学研究科(研究院), 講師 (90322841)
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| Project Period (FY) |
2012-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2013: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2012: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
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| Keywords | 耐湿性 / 種子 / 冠水害 / 発芽 / 吸水 / 受動 / 能動 / 微細構造 |
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| Research Abstract |
Dried soybean seeds are prone to suffer waterlogging injury just after seeding if they are exposed to excess moisture. After 3 hr of waterlogging treatment, significant differences in seed survival were detected among cultivars. In addition, the passive imbibition during 10 - 30 min of waterlogging, and the capillary imbibition during 0 - 10 min of flooding were caused by significant differences in the imbibition rate among cultivars. Although neither imbibition showed a significant correlation with the survival directly, the ratio between the passive and the capillary imbibition rate was significantly correlated with survival. Factors affecting imbibition included the hydraulic conductivity of the seed coat and seed osmolarity, which were significantly correlated with the passive and the capillary imbibition rate, respectively.
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