中亚以东南绵羊群体亲缘血统判别式的研究

Studies on Discriminants for Phylogenetic Extraction of Sheep Populations in East and South of Central Asia

在将中亚以东南绵羊群体划分为“蒙古羊”、“南亚羊”和“欧洲羊”三大集团的既有研究结论的基础上 ,论证了这一广阔地域的血统两个判别式 ;以 10个群体 10个基因座 33个等位基因频率为例对这两个判别式进行验证。根据遗传贴近度的思想确定判别式 2为最理想的判别式。以该式判别一个未知群体的血统是否符合已知的畜牧学逻辑 ,结果肯定判别式 2定义的遗传贴近度是中亚以东南绵羊群体血统判别的可靠依据 ,可以反映湖羊、同羊和云南绵羊的血统育成过程。该式也适用于其它层次的遗传标记。

Two discriminants are demonstrated for the extraction of sheep population in East and South of Central Asia on the basis of conclusions of a former research,in which the native sheep populations in this field have been divided into 3 major groups,i.e.'Mongolia group','South-Asia group','European group'.In the coruse of verifying the 2 discriminants,the 33 gene frequencies from 10 loci in 10 known populations are exampled.The second discriminant is described as the best discriminant according to theory of genetic approach degree.The extraction of a unknown population is checked with the second discriminant,by which the discriminant may be found to whether conform with the logic of animal science or not,the result can prove that the genetic approach degree of second discriminant is a reliable grounds for discriminant of extraction in East and South of Central Asia,which also may reflect the course of extraction cultrivation of Hu sheep,Tong sheep and Yunnan sheep in China.Of course,it may be extended to other genetic markers.