Identification of of the genes/QTLs for the high-temperature tolerance at ripening stage in rice
| Project/Area Number |
24580030
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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 science/Weed science
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| Research Institution | National Agriculture and Food Research Organization |
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Principal Investigator |
TERAO Tomio 独立行政法人農業・食品産業技術総合研究機構, 中央農業総合研究センター作物開発研究領域, 上席研究員 (80355578)
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| Project Period (FY) |
2012-04-01 – 2015-03-31
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| Project Status |
Completed (Fiscal Year 2014)
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| Budget Amount *help |
¥5,460,000 (Direct Cost: ¥4,200,000、Indirect Cost: ¥1,260,000)
Fiscal Year 2014: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2013: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
Fiscal Year 2012: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
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| Keywords | 高温登熟 / ＱＴＬ / 白未熟粒 / イネ(Oryza sativa L.) / 耐性 / QTL / イネ / 玄米外観品質 / 遺伝子 / 地球温暖化 |
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| Outline of Final Research Achievements |
Quantitative trait loci (QTLs) for the apparent quality of brown rice under high temperatures during ripening were analyzed using chromosomal segment substitution lines. The chromosomal segments of indica-type cultivar, Habataki, were substituted into a japonica-type cultivar Sasanishiki background. Two putative QTLs, qRG3-2, for the percentage of regular grains, and qTW3-2, for the percentage of TWI grains were identified on chromosome 3. The Habataki-allele at qTW3-2, which was located near a marker, RM14702, mainly reduced the TWI grains, while qRG3-2, which was located near RM3766, increased the regular grains. The effects of these QTLs were more obvious under high-temperature ripening conditions; hence, they are considered to be high-temperature-tolerant QTLs. Incorporation of the Habataki region, including qRG3-2 and qTW3-2 into Japonica-type cultivars is recommended to improve high-temperature tolerance and to increase grain quality.
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Report
(4 results)
Research Products
(22 results)
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[Journal Article] Disruption of a rice gene for α-glucan water dikinase, OsGWD1, leads to hyperaccumulation of starch in leaves but exhibits limited effects on growth2013
Author(s)
Tatsuro Hirose, Naohiro Aoki, YusukeHarada, Masaki Okamura, Yoichi Hashida,Ryu Ohsugi, Akio Miyao, Hirohiko Hirochika, Tomio Terao
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Journal Title
Frontiers in Plant Science
Volume: Vol.4
Pages: 143-143
DOI
Related Report
Peer Reviewed
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