中国畜牧兽医

• 遗传繁育 • 上一篇    下一篇

贵州地方鸡种的遗传变异研究

王文涛1,林家栋2,陈眷华2,张福平2   

  1. 1.贵州省清镇市农业局, 贵州清镇 551400;2.贵州大学动物科学学院, 贵州贵阳 550025)
  • 收稿日期:2013-10-18 出版日期:2014-04-20 发布日期:2014-05-27
  • 通讯作者: 张福平(1978—),男,内蒙古人,副教授,研究方向:家禽育种。E-mail:zfu-1010@126.com
  • 作者简介:王文涛(1985—),男,山西人,硕士,研究方向:动物育种。
  • 基金资助:

    贵州省科技攻关项目(黔科合NZ字[2012]3007号)。

Study on Genetic Diversity of Domestic Chicken in Guizhou

WANG Wen-tao1,LIN Jia-dong2,CHEN Juan-hua2,ZHANG Fu-ping2   

  1. (1. Qingzhen Agricultural Bureau, Guizhou Province, Qingzhen 551400, China;2. College of Animal Science, Guizhou University, Guiyang 550025,China)
  • Received:2013-10-18 Online:2014-04-20 Published:2014-05-27

摘要: 为了研究贵州地方鸡种的遗传多样性与系统进化,试验通过PCR直接测序的方法,测定了6个贵州地方鸡种的90个个体线粒体DNA控制区部分序列,并进行了序列分析。结果表明,DNA控制区序列长度为780 bp,A、G、C、T 4种核苷酸的平均比例分别为26.14%、13.38%、25.98%、34.50%;共发现40个变异位点(不包含种内变异位点),占分析位点总数的5.13%;共确定30个单倍型,6个群体内单倍型变异度总体为0.914,变化范围为0.506~0.976。6个群体间表现出显著的遗传分化和较高水平的群体遗传多态性。

关键词: 贵州地方鸡种; 线粒体DNA控制区; 遗传多样性

Abstract: PCR and direct sequencing methods were used to analyze the genetic diversity and systematic evolution in Guizhou domestic fowls by determining a 780 bp DNA fragment of control region of mtDNA from 90 individuals of 6 Guizhou domestic chicken breeds. The percentage of nucleotide A, G, C and T were 26.14%,13.38%,25.98% and 34.50%, respectively. There were 40 polymorphic sites accounting for 5.13% of total analyzed sites. The diversity of haplotypes in 6 Guizhou domestic chicken breeds was ranged from 0.506 to 0.976, which showed significant genetic differentiation and higher levels of population genetic polymorphism.

Key words: Guizhou domestic chicken breeds; mtDNA D-loop; genetic diversity