西南地区金荞麦(Fagopyrum dibotrys(D.Don)Hara)居群遗传多样性研究  

Study on Genetic Diversity of Fagopyrum Dibotrys Populations in Southweast China

作　　者：罗定泽[1] 侯鑫[2] 赵佐成[3] 

机构地区：[1]四川师范大学化学与生命科学学院,四川成都610066 [2]内蒙古大学生物系,内蒙古呼和浩特010021 [3]中国科学院成都生物研究所,四川成都610041

出　　处：《四川师范大学学报（自然科学版）》2000年第4期421-424,共4页Journal of Sichuan Normal University（Natural Science）

摘　　要：采用等位酶电泳技术研究了云南省和四川省西南共 5个县境内金荞麦 (Fagopyrumdibotrys(D .Don)Hara) 5个天然居群的遗传多样性 .金荞麦居群内维持有较高的遗传多样性 ,多态位点比率为 5 6 .7% ,预期杂合度和观察杂合度分别为 0 .2 2 1和 0 .36 3.并对金荞麦与栽培荞麦之间遗传变异作了比较 .Based on allozyme ellectrophoresis, th e genetic diversity and differentiation among 5 wild populations of buckwheat Fagopyrum dibotrys from 5 counties in the Yunlan Province and the southweast p ant of Sichuan Province, China, are studies in this paper. The result shows th at the geneti c diversity within wild populations is high. The percentage of loci polymorphic is 56.7%, the mean expected and observed beterozygosities are 0.221 and 0.363 re pectively. The genetic variation between cultivated buckwheat and wild populatio n is compared.

关 键 词：基因频率 遗传多样性 金荞麦 

分 类 号：Q943[生物学—植物学]