长江中下游以及东南沿海的7个山羊群体的遗传多样性分析

利用23个微卫星标记对宜昌白山羊、马头山羊、湘东黑山羊、福清山羊、戴云山羊、黄淮山羊、长江三角洲白山羊等7个山羊群体进行了遗传多样性检测,结果显示:23个基因座中21个座位在所有群体中都具有多态性,基因座BM0203在各个群体中分别为纯合基因座,但存在群体间变异,基因座BM6444在湘东黑山羊、宜昌白山羊群体中为单态,但在其他群体都存在多个等位基因。总群体基因杂合度为0.819 0,7个群体PIC平均值在0.630 5~0.691 9之间。根据Nei氏遗传距离用UPGMA方法对7个群体进行亲缘关系聚类,马头山羊和湘东黑山羊首先聚为一类,福清山羊、戴云山羊、长江三角洲白山羊、黄淮山羊再和前者依次聚类,最后,宜昌白山羊和它们整个聚为一类。

Analysis of Genetic Diversity among Seven Goat Population in the Middle and Lower Yangtse River Valley and East and South Mainland near the Sea

The genomes of seven goat populations were screened by using microsatellites as molecular markers,including Yichang White goat,Matou goat,Xiangdong Black goat,Fuqing goat,Daiyun goat,Huanghuai goat and Yangtse River Delta White goat.A total of 23 microsatellite markers were used and genetic diversity and genetic distance were also determined.The results showed that only 21 loci showed polymorphism in all population in 23 loci.Alleles were homozygotic in each population in BM0203,but there was genetic diversity among populations.Alleles were homozygotic in Xiangdong Black goat and Yichang White goat in BM6444,but more than one allele was detected in other populations.Average heterozygosity of all populations was(0.819 0),and the mean polymorphism information content(PIC) of all seven populations was 0.630 5~0.691 9.A UPGMA dendrogram was constructed based on Nei's standard genetic distance.Matou goat and Xiangdong Black goat were grouped at first,then Fuqing goat,Daiyun goat,Yangtse River Delta White goat,Hunghuai goat joined them respectively,Finally,Yichang White goat clusted with all above.