Interaction of root-traits related QTL with soil stress factors in rainfed lowland and upland rice
| Project/Area Number |
22405042
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 海外学術 |
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| Research Field |
Boundary agriculture
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| Research Institution | Nagoya University |
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Principal Investigator |
YAMAUCHI Akira 名古屋大学, 生命農学研究科, 教授 (30230303)
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| Co-Investigator(Kenkyū-buntansha) |
MORITA Shigenori 東京大学, 大学院農学生命科学研究科, 教授 (00143404)
INUKAI Yoshiaki 名古屋大学, 農学国際教育協力研究センター, 准教授 (20377790)
ABE Jun 東京大学, 大学院農学生命科学研究科, 助教 (60221727)
KATO Yoichiro 東京大学, 大学院農学生命科学研究科, 助教 (50463881)
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| Project Period (FY) |
2010-04-01 – 2014-03-31
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| Project Status |
Completed (Fiscal Year 2013)
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| Budget Amount *help |
¥17,550,000 (Direct Cost: ¥13,500,000、Indirect Cost: ¥4,050,000)
Fiscal Year 2013: ¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2012: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2011: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
Fiscal Year 2010: ¥6,370,000 (Direct Cost: ¥4,900,000、Indirect Cost: ¥1,470,000)
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| Keywords | 土壌環境 / 根 / QTL / 相互作用 / 天水田 |
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| Research Abstract |
Roots play important roles in crop adaptation to various abiotic stresses such as water stress, but traits responsible for such adaptations may differ with environments. This study aimed at identifying the root traits and their associated QTL, and evaluating their interactions with soil water stresses. We made an extensive survey on genetic resources in rice in the Philippines and evaluated their responses to water stress conditions. We then identified the root plasticity as one of the key traits for adaptation and a QTL that is related with branching on chr 6. Field experiments showed the genotype that showed greater dry matter production under rainfed lowland conditions may have exhibited the root plasticity at soil depths with more available soil moistures. In cases where root plasticity at deeper soil layers were observed, such root plastic development may have occurred in response to the reduction of soil hardness when the soil moisture was high during soil moisture fluctuations.
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Report
(5 results)
Research Products
(37 results)
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[Journal Article] Functional roles of the plasticity of root system development in biomass production and water uptake under rainfed lowland conditions.2013
Author(s)
Kano-Nakata, M., Gowda, V. R. P., Henry, A., Serraj, R., Inukai, Y., Fujita, D., Kobayashi, N., Suralta, R, R. and Yamauchi, A.
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Journal Title
Field Crops Research
Volume: 144
Pages: 288-296
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Peer Reviewed
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[Presentation] Soil moisture and soil strength interaction impacts on root distribution and dry matter production in rainfed lowland rice fields in the Philippines2012
Author(s)
Mana Kano-Nakata, Roel R. Suralta, Filomena S. Grospe, Maria Corazon N. Julaton, Anna Theresa Isabel O. Rebong, Andrea M. Flores, Yoshiaki Inukai, Jonathan M. Niones, Emi Kameoka, Shigenori Morita, Jun Abe, Yoichiro Kato, Yoshimichi Fukuta, Nobuya Kobayashi and Akira Yamauchi
Organizer
第234回日本作物学会講演会
Place of Presentation
東北大学
Year and Date
2012-09-10
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