中国水产科学2016，Vol.23Issue(6)：1268-1278,11.DOI:10.3724/SP.J.1118.2016.16065
鳜鱼生长性状遗传参数的估计
Estimates of genetic parameters for growth traits ofSiniperca chuatsi
摘要
Abstract
We collected different geography groups of mandarin fish (Siniperca chuatsi) from the provinces of Hunan, Guangdong, and Jiangsu, and multiplied them by artificial propagation. Twenty-one families of mandarin fish were set up in 4 years. Based on the data of growth traits measured in mandarin fish we used derivative free restricted maximum likelihood to compute the genetic parameters of 3 growth traits—body weight (BW), body length (BL), body height (BH), by mixed animal models. The genetic parameters of mandarin fish on 210th day were estimated by Asreml program. The heritabilities of BW, BL, BH for 210 day-age ofSiniperca chutasi were 0.4, 0.45, 0.29. The different genetic variance components of BW, BL, BH, computed by 3 mixed animal models were compared. The high and moderate heritability of growth traits suggested that additive genetic effect of these traits in mandarin fish were high and it was expected to have good genetic gain through individual selection and family selection. The genetic correlations between BW and BL, BW and BH, BL and BH, were 0.96, 0.93, 0.92, respectively. The high and positive genetic correlations between growth traits suggested that selection for im-provement in body weight of mandarin fish would result improvement in other two traits. After two generations, the average body weight of F2 was 7.5% more than F1. The genetic gain in BW of F2 was 7.5 g. The average BW of F3 was 9% more than F2, and 17.2% more than F1. The genetic gain in BW of F3 was 9.75 g. The average BH was 9.9% more than F1. The genetic gains in BH was 0.22 cm. It was the right way to improve the value of mandarin fish in aquaculture.关键词
鳜鱼/生长性状/遗传参数/遗传力Key words
Siniperca chuatsi/growth trait/genetic parameters/heritability分类
农业科技引用本文复制引用
卢薛,孙际佳,王海芳,侯晓翠,李桂峰..鳜鱼生长性状遗传参数的估计[J].中国水产科学,2016,23(6):1268-1278,11.基金项目
佛山市科技创新团队项目(2014IT100122) （2014IT100122）
广东省海洋渔业科技与产业发展专项科技攻关与研发项目(A201401A02) （A201401A02）
广东省科技计划项目(2014A020208022 （）
2008A020100003) （）
广东省战略性新兴产业核心技术攻关项目(2012A020800001) （2012A020800001）
现代农业人才支撑计划项目(2016-2020) （2016-2020）
