2012 Fiscal Year Final Research Report
QTL for cold tolerance at booting stage of rice and its physiological function
| Project/Area Number |
23780012
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Multi-year Fund |
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| Research Field |
Crop science/Weed science
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| Research Institution | Iwate University |
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Principal Investigator |
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| Project Period (FY) |
2011 – 2012
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| Keywords | 食用作物 |
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| Research Abstract |
Cold damage has been one of the major problems for rice production in northern Japan. Effective screening for new cold tolerance cultivar such as maker-basis is strongly required. The present study aimed to identify the QTL of cold tolerance of highly cold tolerant cultivar Tohoku PL-3" (PL3) and clarify the physiological functions of QTL. The recombinant inbred lines of 215 lines (F_8) between PL3 and Akihikari" (weak tolerance) were used for analysis. We found significant QTL on chromosome 5 and 12 for spikelet sterility induced by low temperature at the booting stages. The QTL at the chromosome 12 has a role for maintaining anther length at low temperature and the QTL at the chromosome 5 has a role for maintaining higher efficiency for fertilization specific anther length.
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