西南地区家鸭资源群体的遗传结构分析  

Genetic Structure of Domestic Duck Populations in Southwestern China

作　　者：李慧芳[1] 宋卫涛[1] 徐文娟[1] 张晶鑫[2] 顾荣[1] 汤青萍[1] 

机构地区：[1]中国农业科学院家禽研究所,江苏扬州225003 [2]扬州大学动物科学与技术学院,江苏扬州225009

出　　处：《江苏农业学报》2008年第2期168-173,共6页Jiangsu Journal of Agricultural Sciences

基　　金：国家自然科学基金项目(30700572);国家科技基础条件平台项目(2005DKA21101)

摘　　要：通过微卫星标记技术对中国西南地区5个家鸭资源群体（云南麻鸭、三穗鸭、兴义鸭、建昌鸭、四川麻鸭）的遗传结构进行评估。结果表明：5个群体的平均杂合度都较高，最低的为四川麻鸭，最高的为三穗鸭，杂合度范围为0．5679-0．6165，群体平均杂合度为0．5874；各鸭种间存在较大的遗传分化，19．86％的遗传变异来源于群体间的差异。5个家鸭群体间的DA遗传距离较远，分化时间较长；NJ聚类结果表明5个家鸭资源聚为3类，聚类结果与这5个鸭种的地域分布和经济用途有一定关系。By using microsatellite markers, the genetic structure of five domestic duck populations in Southwestern China, including Yunnan sheldrake, Sansui duck, Xingyi duck, Jianchang duck and Sichuan sheldrake, was analyzed. The average heterozygosities which ranged from 0. 567 9 to 0. 616 5 were high in 5 populations, with the highest, Sansui duck and the lowest, Sichuan sheldrake. The average heterozygosity of 5 duck populations was 0. 587 4, reflecting the rich diversity. Considerable genetic variation was observed and 19.96% of which came from breed differences. The far DA genetic distances between those duck populations suggested the long time differentation of the populations. The domestic duck populations in Southwestern China were clustered into three groups based on NJ clustering,which related well with the regional distribution and economic utilizations of these duck breeds.

关 键 词：鸭 微卫星 遗传多样性 

分 类 号：S834.2[农业科学—畜牧学]