四川省凉山彝族自治州南部三县苦荞麦栽培居群的遗传多样性研究  

Genetic Diversity and Differentiation of Cultivated Fagoyrum tataricum Populations from Three Counties in South Liangshan Automomous Prefecture of Yi Nationality, Sichuan, China

作　　者：赵佐成[1] 周明德 罗定泽[3] 侯鑫 王中仁 沈国坤[1] 李发良 曹吉祥 

机构地区：[1]中国科学院成都生物研究所,成都610041 [2]国际植物遗传资源研究所,北京100081 [3]四川师范大学生命科学系,成都610066 [4]中国科学院植物研究所系统与进化植物学开放实验室,北京100093 [5]四川省凉山彝族自治州昭觉农业科学研究所,昭觉616150

出　　处：《Acta Genetica Sinica》2000年第6期538-548,共11页

基　　金：国际植物遗传资源研究所资助!APO96/15;中国科学院成都地奥集团科学基金!970596

摘　　要：采用等位酶电泳技术测定了四川省凉山彝族自治州南部金阳、雷波和米易3县的苦荞麦[Fagopyrumtataricum（L）Gaertn．]8个栽培居群的遗传多样性和分化，结合农业生物学性状进行了分析。苦荞麦居群的遗传多样性水平较高，每个位点的等位基因平均数为1．8，多态位点比率为46．6％，平均实际杂合度和预期杂合度分别为0．187和0．218，FsT值为0．22，居群间存在较明显的遗传分化，为了保护苦养麦的种质资源，应该分别加以保护。Genetic diversity and differentiation among 8 cultivated popuations ofFagopyrum tataricum from the counties of Jinyang, Leibo and Miyi in southLiangshan Autonomous Prefecture of Yi Nationality, Sichuan Province, China wereinvestigated using allozyme electrophoresis. The allozymic diversity is roughlycorrelated with agrobiological features. The results suggest that genetic diversity of Ftataricum is quite high. The mean number of alleles Per locus A is 1.8, thepereentage of Polymorphic loci P is 46.6%, and the mean observed heterozygositiesHo and the mean expected heterozygosities He are 0.187 and 0.218 respectively, theratios of gene diversities of heterozygosities FsT is 0.22, which indicates that there is22 Percent of genetic differentiation among populations, and suggests that forprotecting genetic resources all the populations should be included in.

关 键 词：苦荞 等位酶分析 遗传多样性 种质资源 保护 

分 类 号：Q943[生物学—植物学]