天津农学院学报 ›› 2012, Vol. 19 ›› Issue (4): 5-8.

• 研究与简报 • 上一篇    下一篇

微卫星标记对德国镜鲤选育群体的遗传分析

李超1, 鲁翠云1, 曹顶臣1, 李崇文2, 孙效文1,通讯作者   

  1. 1.中国水产科学研究院 黑龙江水产研究所,哈尔滨 150070;
    2.天津市天祥水产有限责任公司,天津 301500
  • 收稿日期:2012-05-10 出版日期:2012-12-20 发布日期:2019-11-13
  • 通讯作者: 孙效文(1955-),男,吉林大安人,研究员,学士,从事水产动物遗传育种工作。E-mail:sunxw2002@163.com。
  • 作者简介:李超(1982-),男,黑龙江哈尔滨人,助理研究员,硕士,从事水产动物遗传育种工作。E-mail:lichao_8295@yahoo.cn。
  • 基金资助:
    农业部“引进国际先进农业科学技术”重点项目“水产主导品种分子育种技术引进”(2011-G12); 公益性行业(农业)科研专项“水产分子育种共性技术的建立与应用”(200903045); 国家高技术研究发展计划项目“鲤生长等经济性状的主效基因发掘及育种潜力评估”(2011AA00402); 黑龙江水产研究所基本科研业务专项“镜鲤生长性状主效基因的筛选与利用”(2009HSYZX-SJ-08)

Genetic Analysis on Selective Population of German Mirror Carp (Cyprinus carpio L.)Using Microsatellite Markers

LI Chao1, LU Cui-yun1, CAO Ding-chen1, LI Chong-wen2, SUN Xiao-wen1,Corresponding Author   

  1. 1. Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin 150070, China;
    2. Tianjin Tianxiang Aquatic Company Limited, Tianjin 301500, China
  • Received:2012-05-10 Online:2012-12-20 Published:2019-11-13

摘要: 选择扩增效果好、有多态性的12个微卫星标记,对一个德国镜鲤选育群体(288尾)的遗传结构进行了分析。共检测到50个等位基因,等位基因数为3~5,平均有效等位基因数为3.076 9,平均观察杂合度为0.416 4,平均期望杂合度为0.658 2,平均多态信息含量为0.605 6。分析结果表明,该群体的多样性水平适中。经χ2检验,群体处于Hardy-Weinberg平衡状态。12个位点均表现为杂合子缺失,表明选择压力较大,提示在后续的生产和选育过程中要注意保持群体的遗传多样性水平,避免近交衰退。

关键词: 微卫星, 分子标记, 德国镜鲤, 遗传结构

Abstract: In this paper, the genetic diversity of selective population of Germany mirror carp (Cyprinus carpio L.) was analyzed using microsatellite markers. The number of effective alleles, observed heterozygosity, expected heterozygosity and polymorphic information content were determined. The Hardy-Weinberg equilibrium was checked by χ2 Test. A total of 50 alleles were identified on 12 microsatellite loci with polymorphism from 288 samples. The average number of alleles was 4.166 7 and the average number of effective alleles was 3.076 9, the average observed heterozygosity and expected heterozygosity was 0.416 4 and 0.658 2, respectively, the average polymorphic information content was up to 0.605 6. The results show that there is a reasonable genetic diversity among the selective population. The population accorded with Hardy-Weinberg equilibrium, but the heterozygote deficit of all twelve loci was detected due to greatly artificial selection pressures. These results suggest that the level of genetic diversity of the population should be maintained and inbreeding recession in the subsequent production and selection of the German mirror carp population should be avoided.

Key words: microsatellite, molecular marker, German mirror carp(Cyprinus carpio L), genetic diversity

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