水稻品种空育131的稻瘟菌致病菌株的遗传多样性分析  

Genetic Diversity of Rice Blast Fungus Isolated from Kongyu 131

作　　者：罗生香[1,2] 王倩[2] 张帆[2] 纪明山[1] 周永力[2] 

机构地区：[1]沈阳农业大学植物保护学院,辽宁沈阳110866 [2]中国农业科学院作物科学研究所/农作物基因资源与遗传改良国家重大科学工程,北京100081

出　　处：《作物杂志》2013年第4期133-136,共4页Crops

基　　金：盖茨基金项目(项目号51587)

摘　　要：采用AFLP(Amplified fragment lengthpolymorphism)技术初步分析了采自黑龙江省稻田49个稻瘟病菌的遗传多样性。这些菌株在0.68的相似水平上被划分为6个宗谱,宗谱G1和G3为优势宗谱,均含有17个菌株,各自占菌株总数的35.1%。在0.90相似水平上被划分为48个宗谱,显示丰富的遗传多样性。人工接种结果表明多数稻瘟病菌株具有强或较强致病力,占69.23%。上述结果为了解黑龙江省稻瘟病菌群体结构特征及水稻抗稻瘟病育种提供信息。The genetic diversity of population of Magnaporthe oryzae isolated from rice variety Kongyu 131 in Hei- longjiang province was assessed with amplified fragment length polymorphism （AFLP）. The results showed that there were 6 genetic lineages at 0.68 similar linkage distance level, with 2 specific lineages （ G1 and G3 ）, each of them include 17 strains,which was account for 35.1% ,respectively. The results also showed that there were 48 genetic lineages at 0.90 similar linkage distance level, which displayed a high genetic diversity. Moreover, nine isolates ex- hibited higher pathogenicity by inoculation analysis. Our results provide useful information for rice variety deploy- ment and breeding resistant to blast in Heilongjiang province.

关 键 词：水稻 稻瘟病菌 遗传多样性 致病力 AFLP 

分 类 号：S435.111.41[农业科学—农业昆虫与害虫防治]