| Budget Amount *help |
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2016: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000)
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| Outline of Final Research Achievements |
Soybean is easy to suffer flooding injuries at both stages of seeding and vegetative growth. To understand the mechanism of the injury, we investigated the wet tolerance of various soybean cultivars focusing on the water permeability of the root or the seed coat. In case of vegetative injury, the tolerant cultivars had abilities of increasing root mass and specific root aquaporins in hypoxia condition, and kept the high root conductivity even under flooding. In case of seed flooding injury, the QTLs from tolerant wild lines could increase the germination rate after flooding, and one of them is same one for ‘seed hardness’. Thus, two different types of soybean flooding injuries might link to the organ water permeability closely.
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