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选用13对SSR引物对2012年从湖南桃江水稻抗稻瘟病鉴定中心病圃中丽江新团黑谷(广谱高感稻瘟病品种)上分离的100个稻瘟病菌单孢菌株进行了遗传多样性分析。聚类分析表明,在0.76的相似水平上100个菌株被划分成24个宗谱,其中L04和L16为优势宗谱,分别含有13个和10个菌株,各占总菌株数的13%和10%;有5个宗谱分别含菌株6~8个,共占总菌株数的35%;另17个宗谱分别含菌株1~4个,共占总菌株数的42%。说明该病圃中的稻瘟病菌群体具有较丰富的遗传多样性。
Thirteen pairs of SSR primers were used to analyze the genetic diversity of 100 isolates of Magnaporthe grisea isolates from the black valley (broad-spectrum high-susceptible rice blast) in Lijiang Xintuan in nursery of the Taojiang Rice Blast Resistance Identification Center in 2012 in Hunan province. analysis. Cluster analysis showed that 100 strains were divided into 24 genealogies at a similarity level of 0.76, of which L04 and L16 were the dominant genealogies, containing 13 and 10 strains respectively, each accounting for 13% of the total number of strains and 10 %. There were 6 to 8 isolates in 5 genealogy lines, accounting for 35% of the total isolates. The other 17 isolates contained 1 to 4 isolates, accounting for 42% of the total isolates. It indicated that the M. grisea population in this nursery had a richer genetic diversity.