2013 Fiscal Year Final Research Report
Studies on stabilization of rice cultivation in Africa
| Project/Area Number |
23405017
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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 |
Breeding science
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| Research Institution | Tokyo University of Agriculture |
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Principal Investigator |
IKEDA Ryoichi 東京農業大学, 農学部, 教授 (50564465)
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| Co-Investigator(Kenkyū-buntansha) |
NATSUAKI Keiko 東京農業大学, 国際食料情報学部, 教授 (80164482)
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| Co-Investigator(Renkei-kenkyūsha) |
ITOH Kazuyuki 神戸大学, 大学院・農学研究科, 教授 (80355271)
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| Project Period (FY) |
2011-04-01 – 2014-03-31
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| Keywords | RYMV / 抵抗性育種 / 系統解析 / 伝播様式 / Striga類 / 根寄生雑草 |
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| Research Abstract |
Highly RYMV resistant lines were bred from the cross of the lower resistant parents, and started the genetic analysis. The introduction of resistance to rice varieties from the known resistance genetic resources is being continued. By artificial inoculation, a few weeds in Uganda awere found to be possible hosts of RYMV. Soil transmission via soil with debris of RYMV infected rice roots was also confirmed experimentally. By sequencing of RYMV DNAs of several isolates from Uganda, their serotypes and location of epitopes were estimated. A study conducted microsatellite markers or SSRs, showed high variations within the population and were genetically different and outcrossing in western Kenya.
We infected 159 BC2F10 recombinant inbreed lines derived from a cross between Oryza sativa Nipponbare (Striga hermonthica resistance), and an accession Oryza rufipogon W630 with S. hermonthica from Alupe, Kenya. The QTL for S. hermonthica resistance was detected on chromosome 9 (RM242).
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[Remarks] 院生(博士後期1年)1名が, 本件に関わるRice yellow mottle virus の実験補助のため, 国際協力事業団青年海外協力隊隊員(短期派遣)のためウガンダ派遣(平成26年3月17日より同年5月9日まで)
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[Remarks] オーストラリア.クィーンズランド大学においてvisiting student としてセミナー発表"Characterization and field transmission of Rice yellow mottle virus in Uganda"(Ayaka Uke)
