期刊论文

Analysis of Genetic Diversity of Magnaporthe oryzae Isolated from LTH by SSR Markers in Rice Blast Nursery at Taojiang in Hunan

中文

西南农业学报

1001-4829

2015

28

6

2496-2500

10.16213/j.cnki.scjas.2015.06.028

公益性行业（农业）科研专项（201203014）； 湖南省自然科学基金青年项目（12JJ4028）；

本校为第一机构

利用抗瘟水稻品种是防治稻瘟病最有效措施,了解稻瘟病菌遗传多样性是抗病品种合理布局的重要基础。本研究于2014年从湖南桃江水稻抗稻瘟病鉴定中心病圃中广谱高感品种丽江新团黑谷(LTH)上分离了120个稻瘟病菌单孢菌株,利用14对SSR引物对其进行遗传多样性分析。结果表明,在相似系数0.75时,120个菌株可分成32个遗传宗谱,其中L1和L7为优势宗谱,分别含有20和16个菌株,各占总菌株数的16.67 %和13.33 %; 宗谱L03,L04,L02分别含菌株11,11,13个,分别占总菌株数的9.17 %,9.17 %和10.83 %; 另27个宗谱分别含菌株1~6个,共占总菌株数的40.83 %。对比本课题组2012、2013年对湖南稻瘟病菌群体遗传结构的研究结...

Utilization of resistant cultivars is the most effective method to control rice blast, and it is an important basis of rational distribution of resistant varieties to clarify the genetic diversity of M. oryzae. The genetic diversity of 120 isolates of M. oryzae from a broad-spectrum highly susceptibe variety,Lijiangxintuanheigu(LTH) in rice blast nursery at Taojiang,Hunan in 2014,was analyzed by 14 pairs based on SSR markers. The results showed that these isolates were classified into 32 genetic lineages at the 0.75 similar level, among which L01 and L07 were the dominant lineages, including 2...