Detection of phylogenetic extraction of sheep populations in East and South Asia based on fuzzy discriminants analysis

文献类型： 外文期刊

第一作者： Sun, Wei

作者： Sun, Wei;Chang, Hong;Musa, Hassan Hussein;Yang, Zhangping;Musa, Hassan Hussein;Tsunoda, Kenji;Chu, Mingxing

作者机构：

关键词： Sheep;genetic approach degree;extraction;fuzzy discriminant

期刊名称：AFRICAN JOURNAL OF BIOTECHNOLOGY （ 影响因子：0.573； 五年影响因子：0.794 ）

ISSN： 1684-5315

年卷期： 2010 年 9 卷 26 期

页码：

收录情况： SCI

摘要： Based on the previous research, according to the Hierarchy clustering, the sheep populations in East and South Asia were divided into 3 groups: Mongolia group, South-Asia group and European group. In this study, the extraction of sheep was demonstrated by two discriminants based on fuzzy discriminants analysis. The discriminants were verified with sheep populations presented 34 alleles in 10 loci. The result showed the second discriminant might be the best known discriminant, which is derived from the theroy of genetic approach degree formula: (I,X) = 1-xi(I,X) = 1-2/K Sigma(K)(j=1) vertical bar mu(X) (P(j)vertical bar) Where mu I (Pj) is the membership function of allele No, j is the group No I, mu x (Pj) is the allele No, j is to distinguished population X, viz., the gene frequencies of allele j in group I, in population X, respectively; K is the number of allele; xi (I, X) is the linear genetic fuzzy degree. The extraction of an unknown population was checked using the second discriminant, the result proved that the genetic approach degree was reliable for discriminant of extraction in East and South Asia, which also might reflect the course of extraction breeding of Tong Sheep, Hu Sheep and Yunnan Sheep in China, and of course, it might be extended to other genetic markers.

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