首页 | 本学科首页   官方微博 | 高级检索  
     检索      

大菱鲆25日龄3个经济性状的遗传参数评估
引用本文:张庆文,孔杰,栾生,于飞,罗坤,张天时.大菱鲆25日龄3个经济性状的遗传参数评估[J].海洋水产研究,2008,29(3).
作者姓名:张庆文  孔杰  栾生  于飞  罗坤  张天时
作者单位:1. 农业部海洋渔业资源可持续利用重点开放实验室,中国水产科学研究院黄海水产研究所,青岛266071
2. 农业部海洋渔业资源可持续利用重点开放实验室,中国水产科学研究院黄海水产研究所,青岛266071;上海水产大学生命科学与技术学院,200090
基金项目:科技部农业科技成果转化基金 , 国家高技术研究发展计划(863计划)
摘    要:为估计我国引进大菱鲆群体的遗传学参数,2006年从多个大菱鲆养殖场采集源于不同国家和地区、不同进口批次的大菱鲆亲鱼,利用人工授精技术构建了66个全同胞家系,包括26个父系半同胞家系组。选用混合模型方程,通过约束最大似然法进行了方差、协方差、遗传力和遗传相关等估计。结果表明,大菱鲆25d仔鱼体长、存活率和白化率的遗传力分别为0.20、0.07和0.22;3个性状间呈负遗传相关关系,检验不显著。研究结果表明,大菱鲆体长和白化率是中度遗传力,选择育种潜力较大;3个性状任何性状的选择对其他两个性状的影响很小,利用一个性状对另一个性状的间接选择是不可行的。

关 键 词:大菱鲆  遗传力  遗传相关  育种值

Estimation of genetic parameters for three economic traits in 25d turbot fry
ZHANG Qing-wen,KONG Jie,LUAN Sheng,YU Fei,LUO Kun,ZHANG Tian-shi.Estimation of genetic parameters for three economic traits in 25d turbot fry[J].Marine Fisheries Research,2008,29(3).
Authors:ZHANG Qing-wen  KONG Jie  LUAN Sheng  YU Fei  LUO Kun  ZHANG Tian-shi
Abstract:Different batches of imported turbot Scophthalmus maximus L.,were collected from different fish farms as broodstock for a genetic breeding program in 2006.Twenty-six paternal half-sib families and sixty-six full-sib families were obtained by artificial fertilization.Variance,covariance matrix,heritability and genetic correlation were estimated by restricted maximum likelihood.The results showed that the heritability of body length,survivorship and albinism rate for 25 d fry were 0.20,0.07 and 0.22,respectively.There was no significant correlation between the three traits.The study revealed moderate heritability in body length and albinism rate and a relatively high potential for selective breeding.Selection of any one of the three traits had little effect on the others,indicating that indirect selection of these traits was unfeasible.
Keywords:Scophthalmus maximus L  Heritability Genetic correlation Breeding value
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号