| Budget Amount *help |
¥45,630,000 (Direct Cost: ¥35,100,000、Indirect Cost: ¥10,530,000)
Fiscal Year 2021: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Fiscal Year 2020: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Fiscal Year 2019: ¥11,050,000 (Direct Cost: ¥8,500,000、Indirect Cost: ¥2,550,000)
Fiscal Year 2018: ¥27,690,000 (Direct Cost: ¥21,300,000、Indirect Cost: ¥6,390,000)
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| Outline of Final Research Achievements |
This study aimed to elucidate the effects of fluctuations in sunlight spectral distribution on leaf photosynthesis using an LED artificial sunlight source system, which we have developed and improved, through reproducible laboratory experiments. We further improved the light source system, and reproduced fluctuations in sunlight spectral distribution in a laboratory chamber with a high accuracy using the system. Using cucumber leaves, we analyzed the effects of sunlight PPFD fluctuations on the net photosynthetic rate and clarified quantitatively the difference from the net photosynthetic rate under steady-state conditions.
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