遗传 ›› 2007, Vol. 29 ›› Issue (5): 587-587―592.doi: 10.1360/yc-007-0587

• 研究报告 • 上一篇    下一篇

中国红原鸡和泰国红原鸡遗传多样性分析

包文斌1,2,陈国宏1,吴信生1,徐琪1,吴圣龙1,束婧婷1,Steffen Weigend3   

  1. 1. 扬州大学动物科学与技术学院, 扬州 225009;
    2. 安徽农业大学动物科技学院, 合肥 230036;
    3. 德国联邦农业研究中心动物育种研究所, Mariensee 31535

  • 收稿日期:2006-09-06 修回日期:2006-10-09 出版日期:2007-05-08 发布日期:2007-05-08
  • 通讯作者: 陈国宏

Genetic diversity of red jungle fowl in China (Gallus gallus spadiceus) and red jungle fowl (Gallus gallus gallus) in Thailand

BAO Wen-Bin1,2, CHEN Guo-Hong1, WU Xin-Sheng, XU Qi1, WU Sheng-Long1,
SHU Jing-Ting1, Steffen Weigend 3

  

  1. 1. College of Animal Science and Technology, Yangzhou University, Yangzhou 225009, China;
    2. College of Animal Science and Technology, Anhui Agriculture University, Hefei 230036, China;
    3. Institute for Animal Breeding, Federal Agricultural Research Centre, Mariensee 31535, Germany
  • Received:2006-09-06 Revised:2006-10-09 Online:2007-05-08 Published:2007-05-08
  • Contact: CHEN Guo-Hong

摘要:

利用29个微卫星DNA标记对来自中国的红原鸡Gallus gallus spadiceus亚种和来自泰国的红原鸡Gallus gallus gallus亚种进行遗传多样性分析, 评估亚种内的遗传变异和亚种间的遗传分化, 结果表明: 共检测到168个等位基因, 每个位点的等位基因数从2到13不等, 所有位点平均的期望杂合度和PIC值分别为0.5780和0.53。中国和泰国红原鸡29个微卫星位点平均有效等位基因数分别为3.79和4.79, 平均基因杂合度为0.5379和0.6385, 两个红原鸡亚种均表现出较高的群体杂合度和丰富的遗传多样性。群体分化系数为19.4%(P<0.01), 两个红原鸡亚种间的Reynolds’遗传距离和Nm值分别为0.157和1.040。由此可见, Gallus gallus spadiceus亚种和Gallus gallus gallus亚种群体具有不同的群体遗传结构, 群体之间存在明显的遗传分化, 并不能将其认定为是同一亚种, 这也为中国家鸡具有独立的起源提供了一定的佐证。

关键词: 遗传多样性, 微卫星, 红原鸡

Abstract:

Genetic diversity of red jungle fowl in China (Gallus gallus spadiceus) and red jungle fowl in Thailand (Gallus gallus gallus) was evaluated with 29 microstaellite loci, the genetic variability within subspecies and genetic differentiation between subspecies were estimated. The results showed that the 168 alleles were amplified with the number of alleles per locus from 2 to 13. The average expected heterozygosity and polymorphism information content (PIC) of all loci were 0.5780 and 0.53, respectively. The mean numbers of effective alleles of red jungle fowl in China and red jungle fowl in Thailand were 5.55 and 6.38. The heterozygosity and the genetic diversity of the two subspecies were high. Genetic differ-entiation index (FST) of these populations was 0.194 (P<0.01). Reynolds’ genetic distance and gene flow between the two populations were 0.157 and 1.040, respectively. Based on these results, genetic structure and significant genetic differentia-tion of red jungle fowl in China were different from red jungle fowl in Thailand. The results of this study did not support to

identify these red jungle fowl subspecies as the same subspecies, but supported the theory that Chinese domestic fowls have independent origin.