家畜生态学报2011，Vol.32Issue(1)：13-19,7.
新疆13个绵羊群体遗传多样性及遗传分化的研究
Stndy on Genetic Diversity and Genetic Differentiation of 13 Sheep Populations in Xinjiang Uygur Autonomous Region
摘要
Abstract
The genetic diversity and genetic differentiation of 13 sheep populations in Xinjiang Uygur Autonomous Region of China were surveyed using 10 microsatellite markers. Using polymorphism information content(PIC), average heterozygosity (H), the heterozygote deficit within population (Fis), the global heterozygote deficit across of all populations (Fit), the coefficients of genetic differentiation (Fst)and gene flow (Nm), we evaluated the genetic diversity and genetic differentiation. The results showed that the mean polymorphism information content was 0. 6803. the mean heterozygosity was 0. 7192, the lowest was that of Chinese Merino sheep (0. 7530), the highest was that of Hetian mountain sheep (0. 6754). the global heterozygote deficit across of all populations amounted to 0. 1066, the heterozygote deficit within population amounted to 0. 0565, the heterozygote deficit within 13 sheep populations was 0.0565, which indicated that 5.65％ of the total genetic variation came from breed differences,and the remaining 94. 355 came from differences among individuals in each population. the mean gene flow was 4.4621, ranging from 3. 0808 to 7.4589, and indicated that gene flow between populations occurred some time in the past. the lower mean genetic distance (0. 1702) and high genetic identity (0. 8448) between populations proved once again that the 13 sheep populations in Xinjiang Uygur Autonomous Region were lowly differentiated with all the loci. The dendrogram constructed from Nei＇s genetic distances and UPGMA method correctly indicated the phylogenetic relationships and geographical distribution among the 13 sheep populations.关键词
新疆/绵羊/微卫星/遗传多样性/遗传分化Key words
Xingjiang/ sheep/ microsatellite/ genetic diversity/ genetic differentiation分类
农业科技引用本文复制引用
汤存伟,余雄,刘武军,张浩,石亮,邢巍婷,程黎明,黄锡霞,马晓燕..新疆13个绵羊群体遗传多样性及遗传分化的研究[J].家畜生态学报,2011,32(1):13-19,7.基金项目
新疆维吾尔自治区"十一五"重大专项(200731135) （200731135）
世行项目(GEF 052456 CHA) （GEF 052456 CHA）
