| Project/Area Number |
63480033
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| Research Category |
Grant-in-Aid for General Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
作物
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| Research Institution | UNIVERSITY OF THE RYUKYUS |
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Principal Investigator |
MARUYAMA Seiichi University of the Ryukyus, Professor, 農学部, 教授 (80045111)
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| Co-Investigator(Kenkyū-buntansha) |
NOSE Akihiro College of Agriculture, Associate College of Agriculture, Professor, 農学部, 助教授 (80045137)
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| Project Period (FY) |
1988 – 1989
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| Project Status |
Completed (Fiscal Year 1989)
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| Budget Amount *help |
¥5,100,000 (Direct Cost: ¥5,100,000)
Fiscal Year 1989: ¥900,000 (Direct Cost: ¥900,000)
Fiscal Year 1988: ¥4,200,000 (Direct Cost: ¥4,200,000)
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| Keywords | Hybrids Rice / Heterosis / F_1 hybrids / Photosynthesis / 雄性不稔系統 / イネ / F_1雑種利用 |
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| Research Abstract |
The present study was carried out in order to investigate mechanism of heterosis on photosynthesis and effect of cytoplasmic male sterility on photosynthesis. The results obtained are as follows:
1. Some F_1 hybrids showed heterosis in the single leaf photosynthetic rate.
2. Correlation coefficients between photosynthetic rate and transpiration. soluble protein content. chlorohyll content, nitrogen content were significant. Especially photosynthetic rate and transpiration showed close relationship.
3. For frequency distribution of F_2 hybrids in the single leaf photosynthesis. there are two types. One is bimodal distribution and the other is bisymmetric distribution. From these results. the author considered that the inheritance of photosynthetic rate was controlled not only by major genes. but also polly genes.
4. Cytoplasmic male sterile line(WA) had not affect on photosynthetic rate. transpiration and chlorophyll content.
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