李之乡,王伟继,胡玉龙,吕丁,吴欢欢,栾生,孔杰

• 1:上海海洋大学水产与生命学院
• 2:中国水产科学研究院黄海水产研究所农业部海洋渔业资源可持续利用重点开放实验室
• 3:青岛海洋科学与技术国家实验室海洋渔业科学与食物产出过程功能实验室

摘要(Abstract)：

本实验采用40个家系共计954尾大菱鲆(Scophthalmus maximus)为实验材料,应用一般动物模型评估4月龄大菱鲆的耐氨氮性状、体长、体重的遗传力和遗传相关。研究表明,4月龄大菱鲆耐氨氮性状遗传力为0.46±0.20,属于高遗传力,其估计值与0相比达到显著水平(P<0.05),具备开展基于表型性状的耐氨氮选育潜力。体长遗传力为0.14±0.22,属于低遗传力;体重遗传力为0.29±0.30,属于中等遗传力;体长和体重遗传力估计值与0相比均未达到显著水平。4月龄大菱鲆耐氨氮性状、体长、体重的相关性分析表明,大菱鲆的耐氨氮性状与体长的遗传相关和表型相关分别为-0.06±0.59和-0.10±0.06;耐氨氮性状与体重的遗传相关和表型相关分别为-0.02±0.48和-0.06±0.06;耐氨氮性状与体长和体重两个性状的相关性非常低,且统计检验均不显著。研究结果表明,以耐氨氮性状为选育指标,不会对大菱鲆的体长和体重产生显著影响。该研究为大菱鲆耐氨氮品种选育提供一定的理论参考。

关键词(KeyWords)： 大菱鲆;遗传力;遗传相关;耐氨氮性状;体长;体重

Abstract:

Keywords:

基金项目(Foundation): 泰山学者种业计划专家项目(ZR2014CQ001);; 山东省重点研发计划项目(2016ZDJS06A07);; 国家高技术研究发展计划项目(2012AA10A408-7)资助~~

作者(Author): 李之乡,王伟继,胡玉龙,吕丁,吴欢欢,栾生,孔杰

DOI: 10.16441/j.cnki.hdxb.20170049

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