| 鳜鱼生长性状遗传参数的估计 |
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| 引用本文： | 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. |
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| 作者姓名： | 卢薛 孙际佳 王海芳 侯晓翠 李桂峰 |
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| 作者单位： | 1. 中山大学生命科学学院，广东省水生经济动物良种繁育重点实验室，水生经济动物研究所，广东广州 510275; 广东海大集团，广东佛山 528216;2. 中山大学生命科学学院，广东省水生经济动物良种繁育重点实验室，水生经济动物研究所，广东广州 510275; 华南农业大学动物科学学院，广东广州 510642;3. 中山大学生命科学学院，广东省水生经济动物良种繁育重点实验室，水生经济动物研究所，广东广州 510275 |
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| 基金项目： | 佛山市科技创新团队项目(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)，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)，现代农业人才支撑计划项目(2016-2020) |
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| 摘 要： | 为深入了解选育过程中鳜鱼(Siniperca chuatsi)生长性状的遗传变化规律,本研究以来自湖南、江苏、广东的翘嘴鳜为基础群体,构建了21个同胞半同胞家系,利用动物模型对不同家系进行了遗传分析:鳜鱼210日龄体重、体长的遗传力为0.40、0.45,属于高遗传力;体高的遗传力为0.29,属于中遗传力。相关分析表明,鳜鱼体重?体长间的遗传相关为0.96;体长?体高间的遗传相关为0.92,体重?体高间的遗传相关为0.94,因此进一步选育采用个体选育或者个体选育与家系选择法相结合的方法都能获得较好的结果;对某一生长性状进行选育时,其他两个相关性状也会得到间接选育。经过选育鳜鱼F2群体平均体重遗传进展为7.5 g,较第一代增加7.5%,F3群体平均体重的遗传进展为9.75 g,较第二代增加9.0%。F3群体平均体长与F1比较无显著提高。F3群体平均体高的遗传进展为0.22 cm,较第一代增加9.9%。本研究旨在为提高鳜鱼育种效率提供重要参数,加速育种进程。
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| 关 键 词： | 鳜鱼 生长性状 遗传参数 遗传力 |
| 修稿时间： | 2016/11/9 0:00:00 |
Estimates of genetic parameters for growth traits of Siniperca chuatsi |
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| LU Xue,SUN Jiji,WANG Haifang,HOU Xiaocui,LI Guifeng.Estimates of genetic parameters for growth traits of Siniperca chuatsi[J].Journal of Fishery Sciences of China,2016,23(6):1268-1278. |
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| Authors: | LU Xue SUN Jiji WANG Haifang HOU Xiaocui LI Guifeng |
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| Institution: | 1. Guangdong Province Key Laboratory for Aquatic Economic Animals;Institute of Aquatic Economic Animals, College of Life Science, Sun Yat-sen University, Guangzhou 510275, China;2. Guangdong Haida Group Co., Ltd, Foshan 528216, China;3. College of Animal Science, South China Agricultural University, Guangzhou 510642, China |
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| 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. |
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| Keywords: | Siniperca chuatsi growth trait genetic parameters heritability |
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