中国蒙系绵羊品种间的基因流动

doi:10.1360/yc-007-324

遗传 ›› 2007, Vol. 29 ›› Issue (3): 324-324―328.doi: 10.1360/yc-007-324

中国蒙系绵羊品种间的基因流动

耿荣庆^1,2, 常洪², 王兰萍¹, 杨章平², 孙伟², 冀德君², 鲁生霞³, 杜垒⁴

1. 盐城师范学院生命科学与技术学院, 盐城 224002;
2. 扬州大学动物科学与技术学院, 扬州 225009;
3. 广东新兴温氏集团南方家禽育种有限公司, 新兴 527439;
4. 郑州牧业工程高等专科学校, 郑州 450011

收稿日期:2006-06-04 修回日期:2006-11-06 出版日期:2007-03-01 发布日期:2007-03-01
通讯作者: 常洪

Gene flow among sheep breeds of mongolian group in China

GENG Rong-Qing^1,2, CHANG Hong², WANG Lan-Ping¹, YANG Zhang-Ping²,
SUN Wei², Ji De-Jun², Lu Sheng-Xia³, Du Lei⁴

1. College of Life Science and Technology, Yancheng Teacher’ College, Yancheng 224002, China; 2. College of Animal Science and Technology, Yangzhou university, Yangzhou 225009, China; 3. Southern Poultry Breeding Limited Company of Wenshi Group, Xinxing 527439, China; 4. Zhengzhou College of Animal Husbandry and Engineering, Zhengzhou 450011, China

Received:2006-06-04 Revised:2006-11-06 Online:2007-03-01 Published:2007-03-01
Contact: CHANG Hong

摘要/Abstract

摘要：

利用结构基因座和微卫星标记分析了中国蒙系绵羊4个品种间的基因流动情况。结果显示, 由结构基因座得出的遗传分化系数在0.0164 ~ 0.0455之间, 由微卫星位点得出的遗传分化系数在0.0107 ~ 0.0239之间, 说明遗传变异绝大部分存在于品种内, 蒙系绵羊品种间的遗传分化水平很低。结构基因座(N_m = 7.971)和微卫星位点(N_m = 15.732)都反映出品种间的基因流通畅。品种间的遗传差异与地理距离之间无直接相关关系。初步推断我国蒙系绵羊品种间的遗传分化主要是自然选择(生境异质性)作用的结果。

关键词: 蒙系绵羊, 基因流, 遗传分化

Abstract:

Gene flow was analyzed among four sheep breeds of Mongolian Group in China using structural gene loci and microsatellite markers.Results showed that genetic differentiation was 0.0164―0.0455 by using structural loci, and was 0.0107―0.0239 by using microsatellite loci.This illustrated that most variations existed within breeds and genetic differen-tiation level was very low among sheep breeds of Mongolian Group in China.There was substantial Gene flow among the breeds as estimated by the structural loci (N_m=7.971) or the microsatellite method(N_m=15.732).There was no direct rela-tionship between genetic differences from breeds and geographical distances.It is concluded that genetic differentiation of sheep breeds of Mongolian Group in China is mainly the result of natural selection (different living conditions).

耿荣庆，常洪，王兰萍，杨章平，孙伟，冀德君，鲁生霞，杜垒. 中国蒙系绵羊品种间的基因流动[J]. 遗传, 2007, 29(3): 324-324―328.

GENG Rong-Qing, CHANG Hong, WANG Lan-Ping, YANG Zhang-Ping, SUN Wei, Ji De-Jun, Lu Sheng-Xia, Du Lei. Gene flow among sheep breeds of mongolian group in China[J]. HEREDITAS, 2007, 29(3): 324-324―328.

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中国蒙系绵羊品种间的基因流动

Gene flow among sheep breeds of mongolian group in China

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