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首页> 外文期刊>Journal of genetics >Analysis of genetic structure and relationship among nine indigenous Chinese chicken populations by the Structure program
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Analysis of genetic structure and relationship among nine indigenous Chinese chicken populations by the Structure program

机译：利用结构程序分析9个中国本土鸡种群的遗传结构和亲缘关系

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The multi-locus model-based clustering method Structure program was used to infer the genetic structure of nine indigenous Chinese chicken (Gallus gallus) populations based on 16 microsatellite markers. Twenty runs were carried out at each chosen value of predefined cluster numbers (K) under admixture model. The Structure program properly inferred the presence of genetic structure with 0.999 probabilities. The genetic structure not only indicated that the nine kinds of chicken populations were defined actually by their locations, phenotypes or culture, but also reflected the underlying genetic variations. At K = 2, nine chicken populations were divided into two main clusters, one light-body type, including Chahua chicken (CHA), Tibet chicken (TIB), Xianju chicken (XIA), Gushi chicken (GUS) and Baier chicken (BAI); and the other heavy-body type, including Beijing You chicken (YOU), Xiaoshan chicken (XIA), Luyuan chicken (LUY) and Dagu chicken (DAG). GUS and DAG were divided into independent clusters respectively when K equaled 4, 5, or 6. XIA and BIA chicken, XIA and LUY chicken, TIB and CHA chicken still clustered together when K equaled 6, 7, and 8, respectively. These clustering results were consistent with the breeding directions of the nine chicken populations. The Structure program also identified migrants or admixed individuals. The admixed individuals were distributed in all the nine chicken populations, while migrants were only distributed in TIB, XIA and LUY populations. These results indicated that the clustering analysis using the Structure program might provide an accurate representation of the genetic relationship among the breeds.
机译：基于多位点模型的聚类方法Structure程序用于基于16个微卫星标记推断9个中国本土鸡（鸡）的遗传结构。在混合模型下，以预定义簇数（K）的每个选定值进行了20次运行。 Structure程序正确地推断出存在0.999概率的遗传结构。遗传结构不仅表明这九种鸡的种群实际上是由它们的位置，表型或文化来定义的，而且还反映了潜在的遗传变异。在K = 2时，将9个鸡群分为两个主要群，一种轻体群，包括茶花鸡（CHA），西藏鸡（TIB），仙居鸡（XIA），固始鸡（GUS）和拜耳鸡（BAI） ）;其他重物类型包括北京有鸡（YOU），萧山鸡（XIA），绿源鸡（LUY）和大沽鸡（DAG）。当K等于4、5或6时，GUS和DAG分别分为独立的簇。当K分别等于6、7和8时，XIA和BIA鸡，XIA和LUY鸡，TIB和CHA鸡仍然聚在一起。这些聚类结果与九个鸡种群的繁殖方向一致。结构计划还确定了移民或混血儿。混合个体分布在所有九个鸡种群中，而移民仅分布在TIB，XIA和LUY种群中。这些结果表明，使用“结构”程序进行的聚类分析可能提供品种之间遗传关系的准确表示。

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