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首页> 外文期刊>African Journal of Biotechnology >Population structure and genetic diversity of Sudanese native chickens
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Population structure and genetic diversity of Sudanese native chickens

机译：苏丹本土鸡的种群结构和遗传多样性

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The objectives of this study were to analyze genetic diversity and population structure of Sudanese native chicken breeds involved in a conservation program. Five Sudanese native chicken breeds were compared with populations studied previously, which included six purebred lines, six African populations and one Sudanese chicken population. Twenty-nine (29) microsatellite markers were genotyped individually in these five populations. Expected and observed heterozygosity, mean number of alleles per locus and inbreeding coefficient were calculated. A model based cluster analysis was carried out and a Neighbor net was constructed based on marker estimated kinships. Two hundred and one alleles were detected in all populations, with a mean number of 6.93 ± 3.52 alleles per locus. The mean observed and expected heterozygosity across 29 loci was 0.524 and 0.552, respectively. Total inbreeding coefficient (FIT) was 0.069±0.112, while differentiation of subpopulations (FST 0.026±0.049) was low indicating the absence of clear sub-structuring of the Sudanese native chicken populations. The inbreeding coefficient (FIS) was 0.036±0.076. STRUCTURE software was used to cluster individuals to 2 ≤ k ≤ 7 assumed clusters. Solutions with the highest similarity coefficient were found at K=5 and K=6, in which Malawian, Zimbabwean, and purebred lines split from Sudanese gene pool. The six Sudanese native chicken populations formed one heterogeneous cluster. We concluded that Sudanese native chickens are highly diverse, and are genetically separated from Malawian, Zimbabwean chickens and six purebred lines. Our study reveals the absence of population sub-structuring of the Sudanese indigenous chicken populations.
机译：这项研究的目的是分析参与保护计划的苏丹本土鸡品种的遗传多样性和种群结构。将五个苏丹本地鸡品种与先前研究的种群进行了比较，其中包括六个纯种系，六个非洲种群和一个苏丹鸡种群。在这五个种群中分别对二十九（29）个微卫星标记进行了基因分型。计算预期和观察到的杂合性，每个基因座的等位基因平均数和近交系数。进行了基于模型的聚类分析，并基于标记估计的亲属关系构建了邻居网络。在所有人群中共检测到201个等位基因，每个位点平均6.93±3.52个等位基因。在29个基因座上观察到的平均杂合度和预期的杂合度分别为0.524和0.552。总近交系数（FIT）为0.069±0.112，而亚种群的分化（FST 0.026±0.049）较低，表明苏丹本土鸡种群缺乏明确的亚结构。近交系数（FIS）为0.036±0.076。使用STRUCTURE软件将个人聚类为2≤k≤7个假设的聚类。在K = 5和K = 6处发现了具有最高相似系数的解决方案，其中马拉维，津巴布韦和纯种系从苏丹基因库中分离出来。六个苏丹本土养鸡种群形成一个异质集群。我们得出的结论是，苏丹本土鸡种类繁多，并且在遗传上与马拉维，津巴布韦鸡和6个纯种系分开。我们的研究表明，苏丹土著养鸡种群没有种群子结构。

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