四川稻瘟病菌遗传宗谱的地理分布及与寄主品种的相关性研究  

Study on the relationship between the rice blast genetic lineages and the geography distribution and host in Sichuan province

作　　者：叶慧丽[1] 张鸿[2] 刘斌 卢代华[1] 龚学书[1] 周西全[1] 

机构地区：[1]四川省农科院植保所,四川成都610066 [2]四川省农科院,四川成都610066 [3]平武县农业部,绵阳平武622550

出　　处：《西南农业学报》2006年第2期222-225,共4页Southwest China Journal of Agricultural Sciences

基　　金：四川省"十五"重大攻关项目(20011-7);四川省应用基础研究项目(01NY051-30)

摘　　要：本研究应用rep-PCR分子指纹技术，对2000-2002年采自四川6个自然生态稻作区的137个稻瘟病菌菌株进行了DNA指纹谱型分析。以0．19遗传相似水平将供试菌株划分成37个遗传宗谱，层次较为丰富。结果表明，各稻作区稻瘟病菌遗传宗谱丰富，它们既有相同的遗传宗谱（即宗谱SCL36、37），又具有自己的特异性宗谱。在杂交稻和常规稻上检测出8个共同稻瘟病菌遗传宗谱，表明它们之间具有一定的亲缘关系；不同的宗谱在杂交稻与常规稻上的分布存在差异，有着自己的优势寄主。One hundred and thirty-seven isolates of rice blast fungus collected from six long-grained nonglutinous rice-growing regions in Sichuan were analyzed for DNA polymorphism by using rep-PCR technique.All isolates can be classified into 37 genetic lineages at 0.19 similar linkage distance level.In different rice-growing regions,there are the same rice blast genetic lineages （such as scl36,37） and special lineages for each region.There are the same eight genetic lineages from hybridized rice and conventional rice,which indicated that they are close.The distribution of each genetic lineage is different in hybridized rice and conventional rice and there are special host for each genetic lineage.

关 键 词：稻瘟病菌 遗传宗谱 地理分布 寄主品种 

分 类 号：S435.111.4[农业科学—农业昆虫与害虫防治]