摘要
采用ISSR(inter-simple sequence repeat)分子标记技术,分析了青藏高原东缘甘南地区不同生境块茎堇菜(Viola tuberifera)4个居群的克隆多样性.结果表明块茎堇菜具有很高的克隆多样性,平均克隆大小(NC)均值为1.1029,Simpson指数(D)平均值为0.9921,不同基因型比率(PD)平均值为0.9081,块茎堇菜居群都为多克隆居群.4个居群内的基因型都为局限基因型,未发现广布基因型,居群间克隆多样性分化明显.克隆多样性各项指数与生境特征没有明显的相关性.
Clonal diversity of four Viola tuberifera populations in eastern Qinghai-Tibetan plateau are determined by using ISSR（inter-simple sequence repeat）mark.The result show a relatively high clonal diversity existed in four populations.Averages of average size of genotypes（NC）,proportion of distinguishable variations（PD）and Simpson＇s index（D）are 1.1029,0.9921 and 0.9081,respectively.The result indicate that four populations of V.tuberifera are multi-clones.The genotypes within four populations are local,but no widespread genotypes are found,indicating a significant clonal differentiation between four populations.The correlation analysis indicate no significant correlation between index of clonal diversity and characteristics of habitats.
出处
《西北师范大学学报（自然科学版）》
CAS
北大核心
2010年第4期74-77,共4页
Journal of Northwest Normal University(Natural Science)
基金
国家自然科学基金资助项目(30960029
30570110)
西北师范大学科技创新工程资助项目(KJCXGC-03-49)
关键词
块茎堇菜
克隆多样性
生境特征
相关性
Viola tuberifera
clonal diversity
characteristics of habitats
correlation
