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基于微卫星标记的5个尼罗罗非鱼品系的遗传多样性分析

文献类型: 中文期刊

作者: 梁宏伟 1 ; 李忠 1 ; 罗相忠 1 ; 王长忠 1 ; 呼光富 1 ; 邹桂伟 1 ; 杨永铨 2 ;

作者机构: 1.中国水产科学研究院长江水产研究所农业部淡水生物多样性保护与利用重点开放实验室

2.厦门鹭业水产有限公司

关键词: Oreochromis niloticus;遗传育种;遗传变异;超雄品系

期刊名称: 生物多样性

ISSN: 1005-0094

年卷期: 2009 年 17 卷 01 期

页码: 82-87

收录情况: 北大核心 ; CSCD

摘要: 为了对生产上应用的5个尼罗罗非鱼(Oreochromis niloticus)品系的遗传背景进行本底调查,以期为育种工作提供基础数据,本文用19对微卫星引物对5个尼罗罗非鱼品系(苏丹品系、台湾品系、吉富品系、超雄品系Ⅰ和超雄品系Ⅱ)进行了遗传多样性分析,计算并统计了等位基因数、多态信息含量(PIC)、杂合度、遗传相似性系数、遗传距离等参数。结果表明19个微卫星位点在5个罗非鱼品系中共检测到113个等位基因,平均期望杂合度在0.578-0.692之间,平均多态信息含量在0.473-0.628之间。5个尼罗罗非鱼品系有较丰富的遗传多样性,而超雄品系Ⅰ的遗传多样性相对较为贫乏。

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