中国野桑蚕遗传多样性的AFLP分析  

AFLP Analysis of Genetic Diversity of Bombyx mandarina in China

作　　者：鲁成[1] 赵爱春[1] 向仲怀[1] 万春玲[2] 

机构地区：[1]西南农业大学蚕丝学院农业部蚕桑学重点实验室,重庆400716 [2]中国科学院遗传研究所,北京100101

出　　处：《Zoological Research》2002年第2期166-172,共7页动物学研究（英文）

基　　金：国家自然科学基金资助项目 ( 39870 6 0 3)

摘　　要：采用AFLP技术对我国具有代表性的 7个省市的 10个野桑蚕 (Bombyxmandarina)种群和 2个家蚕(Bombyxmori)品种的遗传多样性进行了研究。结果表明 :杭州、陕西和重庆 3个地区的野桑蚕种群间及种群内个体间的遗传距离都比家蚕品种大。野桑蚕存在广泛的变异 ,7个省市的 10个野桑蚕种群之间的遗传距离为0 16 4～ 0 44 4(平均值为 0 382 6 ) ,平均杂合度为 0 70 6 1,表明野桑蚕自然群体的遗传多样性十分丰富。The genetic diversity and relationship among 10 populations of mulberry wild silkworm, Bombyx mandarina ,from 7 regions of China and two races of silkworm, Bombyx mori ,were analyzed by AFLP technique. The results showed that the genetic distance of inter and intra populations in mulberry wild silkworm from three regions, Hangzhou, Shaanxi and Chongqing, was even larger than that of races in domestic silkworm. Extensive genetic variation existed among 10 populations of mulberry wild silkworm. The genetic distance between these populations ranges from 0 164 to 0 444(the average value is 0 3826) and the average heterozygosity value of them is 0 7061,which also indicates that mulberry wild silkworm is rich in genetic diversity.

关 键 词：中国 野桑蚕 遗传多样性 AFLP分析 家蚕 杂合度 

分 类 号：S885.9[农业科学—特种经济动物饲养]