2012 Fiscal Year Final Research Report
Studies on the origin of high-photosynthesis in rice high-yielding cultivar, Takanari, based on its pedigree analysis
| Project/Area Number |
22780017
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| Research Category |
Grant-in-Aid for Young Scientists (B)
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| Allocation Type | Single-year Grants |
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| Research Field |
Crop science/Weed science
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| Research Institution | National Agriculture and Food Research Organization |
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Principal Investigator |
TAKAI Toshiyuki 独立行政法人農業・食品産業技術総合研究機構, 作物研究所稲研究領域, 主任研究員 (40547725)
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| Research Collaborator |
KONDO Motohiko 独立行政法人農業・食品産業技術総合研究機構, 作物研究所稲研究領域, 上席研究員 (00355538)
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| Project Period (FY) |
2010 – 2012
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| Keywords | イネ / 多収 / 光合成 / 遺伝解析 |
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| Research Abstract |
To understand genetic mechanism of leaf photosynthesis, one of the factors related to rice yield, we investigated leaf photosynthesis in high-photosynthesis and high-yielding cultivar, Takanari, and its ancestors with eco-physiological and genetic methods. Comparative mapping of quantitative trait locus (QTL) for photosynthesis-related traits revealed that Takanari and its ancestors such as IR8 and Tongil commonly had a QTL on long arm of chromosome 4 with the allele increasing leaf N content. Further genotypic analysis of the Takanari pedigree suggested that breeders have selected the favorable allele of the QTL for photosynthesis on chromosome 4 in several breeding programs for high yield.
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