2016 Fiscal Year Final Research Report
Yield performance by nitrogen manipulation during seed filling in soybean
| Project/Area Number |
25450024
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Crop production science
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| Research Institution | Saga University |
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Principal Investigator |
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| Project Period (FY) |
2013-04-01 – 2017-03-31
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| Keywords | ダイズ / 子実収量 / 窒素転流 / 老化 / 一斉登熟性 |
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| Outline of Final Research Achievements |
It is known that accumulated nitrogen in vegetative organs is remobilized to the seed during seed filling to compensate for the short of nitrogen supply from root system in soybean. This research revealed that this nitrogen remobilization occured at the mid of seed filling (R6), and this remobilization relating with leaf senescence could be hastened or delayed by manipulating soil nitrogen supply. Furthermore, it is also found that the expression of GmATG8c, an autophagy relating gene was synchronized with this nitrogen remobilization. These results suggest that monocarpic senescence in soybean could be controled by the balance of nitrogen demand and supply during seed filling.
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| Free Research Field |
農学
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