| Genetic diversity and population structure of rice blast fungus in China |
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| 作者姓名： | SHENYing ZHUPeiliang YUANXiaoping ZHAOXinhua J.Manry.C.Rojas M.Levy. |
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| 作者单位： | [1]CNRRI,Hangzhou,310006,China [2]A.K.M.Shanjuha,Hangzhou,310006,China [3]PurdueUniversity,WestLafayette,IN47907,USA |
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| 摘 要： | Rice blast resistance has been unreliable insome cases with the field breakdown of previ-ous resistant cultivars occurring within a fewyears.To eventually develop better breedingstrategies,we combine MGR—DNA finger-printing and pathotyping to determine the pop-ulation structure of the pathogen and the rela-tionship between the structure and virulencediversity of the pathogen in China.The MGR—DNA fingerprints of 40 isolates collectedfrom 108 different sites among 12 provinces(municipality)during 1980—1994 have beenstudied with a dispersed repeated sequenceprobe MGR586/EcoR 1 digest combination.The fingerprint data document a generalizedgenetic organization.Forty—five pathotypesof P.ricsea could be distinguished into 54 sepa-rate lineages based on MGR—DNA fingerprint
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| 关 键 词： | 基因差异 种群结构 水稻 菌类 中国 |
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