抗丝黑穗病玉米种质资源的SSR标记遗传多样性分析  

Genetic Diversity Analysis of Maize Germplasm Resources against Sporosporium Reilianum with SSR Markers

作　　者：王艳梅[1] 田歌[2] 王陆军[1] 王燕[3] 李欣[1] 赵明[4] 

机构地区：[1]山西省农业科学院作物科学研究所,山西太原030032 [2]山西省农业科学院畜牧兽医研究所,山西太原030032 [3]山西省农业科学院玉米研究所,山西忻州034000 [4]山西省农业科学院现代农业研究中心,山西太原030031

出　　处：《山西农业科学》2011年第6期512-515,521,共5页Journal of Shanxi Agricultural Sciences

基　　金：山西省青年基金项目(2009021032-2);山西省农业科学院新产品项目(YCP1002)

摘　　要：采用SSR标记方法研究了40份对丝黑穗病有不同抗性玉米自交系的遗传多样性。选用57对SSR扩增稳定的引物,将自交系划分为唐四平头,旅大红骨,Lancaster,Reid,PA,PB这6个类群,结果与系谱来源一致性很高。其中,33个抗病或中抗材料分布于6个类群中,根据杂种优势利用原理,均可用于改良类群内的感病自交系和选育抗病自交系。尤其是旅大红骨群、Lancaster群和PB群中抗病自交系较多,可以构建抗病种质群体。Simple sequence repeats（SSR） markers were adopted in heterotic parts of 40 maize inbred lines of different resistance to head smut.By 57 SSR primers giving stable amplified profiles,40 inbred lines are classified into 6 clusters,which are completely consistent with the heterotic groups determined by their pedigree information（I.e.Sipingtou,Luda Red Cob,PA,PB,Ried and Lancaster）.Cluster analysis showed that 33 head smut-resistance corn inbred lines could be classified into six distinct groups.According to the principle of heterosis utilization,resistant lines could be used to improve susceptible lines in the same group and to select new lines resistant to sporisorium reilianum.Especially in Luda Red Cob,Lancaster and PB,resistant lines were more,so resistant germplasm populations could be obtained.

关 键 词：玉米 丝黑穗病 种质 SSR 遗传多样性 

分 类 号：S513.032[农业科学—作物学]