陕西黄牛群体血液蛋白位点的遗传分化

应用系统随机整群抽样法，对陕西４个黄牛群体６个血液蛋白位点估测的基因频率进行遗传变异分析。证实黄牛群体的遗传变异主要由系统内血液蛋白质的多态现象所造成，系统间的遗传差异仅在５．２８％以下。不同的群体遗传变异程度亦有差异，基因分化程度与备总群育种水平呈明显的反变关系。同时研究表明，系统随机整群抽样是进行黄牛群体遗传变异分析的最适抽样方法。

Genetic Differentiation of Blood Protein Loci on the Yellow Cattle Population in Shaanxi

With the method of the Stratified Random Cluster Sampling,the geneticvariation of the gene frequences obtained from 6 blood protein loci on the 4 yellow cattlepopulations in Shaanxi was analysized.The results indicated that the genetic variationof the yellow cattle population is mainly caused by the polymorphism of the blood pro-tein within the systems,with the only difference of less than 5.26?tween the sys-tems;the genetic variation degrees are different in different populations,and the con-travriant relation obviously exists between the gene differentiation degree and the breed-ing level of each population. Also the results showed that the Stratified Random ClusterSampling is an adequate sampling method for the genetic variation analysis of yellow cat-tle population.