中国沿海中部珊瑚菜居群等位酶变异及其遗传多样性  

Allozyme variation and genetic diversity of Glehnia littoralis populations at the middle of seaboard in China

作　　者：惠红[1] 刘启新[1] 刘梦华[1] 

机构地区：[1]江苏省中国科学院植物研究所,江苏南京210014

出　　处：《植物资源与环境学报》2001年第3期1-6,共6页Journal of Plant Resources and Environment

基　　金：江苏省自然科学基金资助项目 (BK93 14 6 3 0 7) ;国家自然科学基金资助项目 (3 9870 0 71)

摘　　要：利用聚丙烯酰胺凝胶电泳方法 ,分析了我国沿海中部 (江苏、山东和浙江 )海滨沙滩珊瑚菜 (GlehnialittoralisFr.SchmidtexMiq .) 7个居群 8种酶系统 19个位点的等位基因遗传变异特征 ,结果表明居群内多态位点比率平均为 82 .4% ,每一位点平均等位基因数为 2 .77,有效等位基因数为 2 .2 4,固定指数F的平均值为 - 0 .0 91。珊瑚菜居群基因多样性 80 .9%产生于居群内 ,19.1%产生于居群间。居群间的遗传距离平均为 0 .317,遗传一致性为 0 .72 8,居群内维持着较高水平的遗传多样性。据此 。Genetic variation characters of 19 loci in 8 enzyme systems from 7 populations of \%Glehnia littoralis \%Fr. Schmidt ex Miq. at seaboard of Jiangsu, Shandong and Zhejiang Provinces in China were analysed using vertical slab polyacrylamide gel electrophoresis. The results showed that the average percentage of polymorphic loci is 82.4%, mean allele number per locus 2.77, effective allele number 2.24, and the average fixation index -0.091. There is 80.9% genetic variation within population. The average genetic distances between 7 populations of this species is 0.317. It is indicated that the levels of genetic diversity in \%G. littoralis \%populations are higher.

关 键 词：珊瑚菜 居群 等位酶 遗传多样性 保护 濒危机理 中国 

分 类 号：Q949.763.3[生物学—植物学]