您好，欢迎访问中国水产科学研究院 机构知识库！
中国水产科学研究院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Decreased Genetic Drift under the Overlapping Conservation

文献类型： 外文期刊

作者： Zhang, Chengfeng 1 ; Su, Shengyan 1 ; Du, Fukuan 1 ; Zhu, Jian 1 ;

作者机构： 1.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Minist Agr, Key Lab Freshwater Fisheries & Germplasm Resource, Wuxi 214081, Peoples R China

关键词： Genetic drift;overlapping generation;gene frequency

期刊名称：PAKISTAN JOURNAL OF ZOOLOGY （ 影响因子：0.831； 五年影响因子：0.768 ）

ISSN： 0030-9923

年卷期： 2016 年 48 卷 1 期

页码：

收录情况： SCI

摘要： In order to understand the genetic drift under closed population using equaled family size, two overlapping conservation methods proposed (increment and decrement) were introduced to compare with the discrete population. Finally, the article showed body weight controlled by hundred loci having average gene effect. For increment, the second generation had the parents composed of 400 original population and 100 from first generation; the third population consisted of 300 original population, 100 from first generation and 100 from second generation. The fourth population was composed 200 from original population, 100 from first population, 100 from second population, 100 from third population, and 100 from the fourth population. The fifth population was achieved by randomly selecting 100 from each population. For decrement, the method has the opposite direction. For different population, both more than one thousand and less than family sizes 10 have the stable gene frequency despite the different initial gene frequency and sex ratio. Despite several generations were maintained together, less than 5 generations increment conservation can make the gene frequency improved to less than 0.5, while more than 0.5, increment conservation can make them decrease to less than 5 generations and reach the stable higher gene frequency in the following generations. Generally, less than 0.4 gene frequency can use in the increment conservation. More than 0.7, you can use the decrement method. When 100 loci which have average gene effect and random initial gene frequency were assumed, both increment and decrement conservation methods can keep the phenotype stable.

  • 相关文献

[1]Taxonomic status and genetic diversity of cultured largemouth bass Micropterus salmoides in China. Bai, Junjie,Quan, Yingchun,Liang, Suxian,Lutz-Carrillo, Dijar J.,Liang, Suxian.

[2]Genetic variability assessed by microsatellites in the breeding populations of the shrimp Penaeus (Fenneropenaeus) chinensis in China. Zhang, Tianshi,Kong, Jie,Wang, Weiji,Wang, Qingyin,Zhang, Tianshi.

作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国水产科学研究院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台