2013 Fiscal Year Final Research Report
Estimation of migration route of paddy weed, Echinochloa oryzicola to Japan based on its geographical cpDNA variation
| Project/Area Number |
22580017
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Crop science/Weed science
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| Research Institution | Akita Prefectural University |
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Principal Investigator |
YASUDA Kentaro 秋田県立大学, 生物資源科学部, 准教授 (00549032)
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| Project Period (FY) |
2010-04-01 – 2014-03-31
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| Keywords | タイヌビエ / 小穂F-C型 / 地理的変異 / 水田雑草 / 葉緑体DNA / 稲作伝播 |
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| Research Abstract |
Some Japanese paddy weeds are assumed to be migrated to Japan associated with the propagation of rice cultivation. In order to verify this assumption, migration route of Echinochloa oryzicola to Japan were analyzed based on its geographical distribution pattern of spikelet forms and cpDNA variations. In this research, 692 accessions of E. oryzicola were newly collected. Geographical distribution patterns of the spikelet forms and the cpDNA variations display a geographical trend. For example, E. oryzicola with C spikelet form and haplotype 1 (cpDNA) is predominantly distributed in the southwest parts of Japan where the paddy-rice cultivation were firstly introduced and dispersed. These two variations are notable to analyze the migration route of E. oryzicola to Japan.
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