不同生境三裂叶豚草种群的遗传结构  

THE POPULATION GENETIC STRUCTURE OF AMBROSIA TRIFIDA IN DIFFERENT ENVIRONMENT

作　　者：沙伟[1] 周福军[1] 祖元刚 

机构地区：[1]东北林业大学森林植物生态学开放研究实验室,哈尔滨150040

出　　处：《木本植物研究》2000年第1期94-98,共5页

基　　金：国家教委跨世纪优秀人才计划基金资助项目

摘　　要：采用水平切片淀粉凝胶电泳测定了东北地区分布的不同生态环境条件下7个三裂叶豚草种群的遗传结构。统计分析了 1 0个酶系统的 1 0个位点 ,结果表明 :三裂叶豚草种群内存在着丰富的遗传变异。多态位点百分率为 80 .0 0 % ,等位基因平均数为 1 .80 ,期望杂合度为 0 .375 ,遗传一致度和遗传距离为 0 .95 9和 0 .0 42。The genetic structure of seven Ambrosia trifida population from northeast China were investigated using horizontal starch gel electrophoresis ten putative loci from ten enzyme systems were statistics analysis. The result showed very high genetic variability in population of A.trifida, with a percentage of polymorphic loci of 80.00%, an average number of alleles per locus of 1.80. The expected heterozygote was 0.375, the means of genetic identity and genetic distance were 0.959 and 0.042.

关 键 词：三裂叶豚草 等位酶 遗传变异 遗传结构 菊科 

分 类 号：Q949.783.5[生物学—植物学]