利用SSR分子标记技术，分析我国北方部分玉米自交系的遗传多样性。从79对SSR核心引物目录中，选出43对引物对52份玉米自交系进行遗传多样性研究，共检测到174个等位基因位点，每对引物检测到2～8个等位基因，平均每个位点的等位基因数4.35个，平均多态性信息量为0.593。UPGMA聚类分析结果表明，52份自交系划分为兰卡斯特群、瑞德群、旅大红骨群、塘四平头群和综合种群5个类群。生产上主要推广杂交种的亲本大多来自不同的类群。

SSR technology is used to analyze the genetic diversity of earlier maize inbred lines from North China.43 pair of primers,which are selected from 79 pairs SSR core primers catalog provided by CIMMYT-AMBIONET service lab are used for genetic diversity research on 52 maize inbred lines,and 174 polymorphic bands can be detected.The mean allele variance number is 4.35 with arrange from 2 to 8 in each site,the mean PIC value is 0.593.The UPGMA analysis classified 52 inbred lines into 5 distinct clusters,Lancaster,BSSS,Luda red cob,Sipingtou and integration.Most of the parents used in commercial maize hybrids came from the different clusters.

黑龙江省农业科学院青年基金项目