| Budget Amount *help |
¥19,110,000 (Direct Cost: ¥14,700,000、Indirect Cost: ¥4,410,000)
Fiscal Year 2010: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000)
Fiscal Year 2009: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2008: ¥9,880,000 (Direct Cost: ¥7,600,000、Indirect Cost: ¥2,280,000)
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| Research Abstract |
We analyzed physiological mechanisms regulating sink formation of soybean under elevated CO_2 and temperature conditions, with emphasis placed on the capacity of nitrogen fixation and photosynthesis. Under elevated CO_2 and temperature conditions, nitrogen fixation and photosynthesis were significantly enhanced at the early growth stage, whereas they were depressed at the later growth stage. This elevated CO_2-induced down-regulation was associated with the decreased leaf activity, which was probably due to decreased transpiration, increased leaf temperature and accumulation of photoassimilate in leaves under elevated CO_2 and temperature conditions.
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