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林业科学 ›› 2004, Vol. 40 ›› Issue (5): 127-131.doi: 10.11707/j.1001-7488.20040521

• 论文及研究报告 • 上一篇    下一篇

中日美栗疫病菌群体遗传结构比较

王克荣 周扬 MG Milgroom   

  1. 南京农业大学植物病理系,南京210095;美国康乃尔大学植病系,NY14853
  • 收稿日期:2002-10-10 修回日期:1900-01-01 出版日期:2004-09-25 发布日期:2004-09-25

Comparison of Genetic Structures among Cryphonectria parasitica Populations from China,Japan and the USA

Wang Kerong,Zhou Yang,MG Milgroom   

  1. Department of Plant Pathology, Nanjing Agricultural University Nanjing210095;Department of Plant Pathology, Cornell University NY14853
  • Received:2002-10-10 Revised:1900-01-01 Online:2004-09-25 Published:2004-09-25

摘要:

采用RFLP技术,对中日美3国的26个子群体共757个栗疫病菌菌株的核DNA进行了群体遗传结构分析。结果表明,栗疫病菌的中国子群体间遗传结构有明显的分化,日本子群体间的遗传结构差异不明显;在美国和亚洲的栗疫病菌群体间没有发现基因流的迹象;美国栗疫病菌群体的遗传结构与日本群体的关系比较密切,而与中国群体间的差异较大。

关键词: 栗疫病菌, 群体, 遗传结构, RFLP

Abstract:

The genetic structures of chestnut blight fungus, Cryphonectria parasitica, among 26 subpopulations including 757 isolates, from populations of China, Japan and the USA, were analysed with DNA RFLP. The results showed that the subpopulations from China were significantly subdivided while those from Japan were not. There is currently no gene flow between populations of Asia and of the USA; both population structures of the USA and Japan were related more closely than those of Japan to China.

Key words: Chestnut blight fungus, Population, Genetic struture, RFLP