| 利用父母本微卫星标记估计大菱鲆(Scophthalmus maximus L.)幼鱼生长性状的遗传参数 |
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| 引用本文： | 胡玉龙,官健涛,马雨,孔杰,王伟继.利用父母本微卫星标记估计大菱鲆(Scophthalmus maximus L.)幼鱼生长性状的遗传参数[J].海洋学报(英文版),2016,35(2):126-130. |
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| 作者姓名： | 胡玉龙 官健涛 马雨 孔杰 王伟继 |
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| 作者单位： | 中国水产科学研究院黄海水产研究所, 青岛 266071,中国水产科学研究院黄海水产研究所, 青岛 266071;中国海洋大学, 海洋生命学院, 青岛 266071,中国水产科学研究院黄海水产研究所, 青岛 266071,中国水产科学研究院黄海水产研究所, 青岛 266071,中国水产科学研究院黄海水产研究所, 青岛 266071 |
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| 摘 要： | The estimation of genetic parameters has played an important role in animal selective breeding for growth traits.Recently studies show that molecular markers can be incorporated into genetic evaluations. In order to improve the performance of an incomplete pedigree(i.e, only parents are known) in the genetic evaluations, 12 microsatellite markers have been applied in the estimation of the genetic parameters for body weight in a farmed population(n=1 890) of juvenile turbot(Scophthalmus maximus L.). A new relatedness called parental molecular relatedness(PMR) is estimated based on results of genotyping of 48 parents(31 males, 17 females) with microsatellites markers. The feasibility of PMR in estimation of genetic parameters is verified by comparison with pedigree related(PR) which is obtained from a complete pedigree. The results demonstrate that a high correlation(0.872) between them is found. Heritabilities are estimated using the PMR(0.52±0.13) and PR(0.55±0.22) with the same animal model. A cross-validation shows that the predictive abilities of models using the PMR and the PR are identical(0.81). From that, a conclusion can be made that PMR and PR predicted genetic values equally well in a population of juvenile turbot. Therefore PMR can be applied as an alternative of the PR when only parents are known. However, for a better performance, more markers and more families should be included in a further study.
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| 关 键 词： | 大菱鲆(Scophthalmus maximus L.) 生长性状 加性遗传相关系数 遗传参数 |
| 收稿时间： | 2014/9/23 0:00:00 |
| 修稿时间： | 1/8/2015 12:00:00 AM |
An estimation of genetic parameters of growth traits in juvenile turbot (Scophthalmus maximus L.) using parental molecular relatedness |
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| HU Yulong,GUAN Jiantao,MA Yu,KONG Jie and WANG Weiji.An estimation of genetic parameters of growth traits in juvenile turbot (Scophthalmus maximus L.) using parental molecular relatedness[J].Acta Oceanologica Sinica,2016,35(2):126-130. |
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| Authors: | HU Yulong GUAN Jiantao MA Yu KONG Jie and WANG Weiji |
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| Institution: | 1.Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China2.Yellow Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Qingdao 266071, China;College of Marine Life, Ocean University of China, Qingdao 266003, China |
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| Abstract: | The estimation of genetic parameters has played an important role in animal selective breeding for growth traits. Recently studies show that molecular markers can be incorporated into genetic evaluations. In order to improve the performance of an incomplete pedigree (i.e, only parents are known) in the genetic evaluations, 12 microsatellite markers have been applied in the estimation of the genetic parameters for body weight in a farmed population (n=1 890) of juvenile turbot (Scophthalmus maximus L.). A new relatedness called parental molecular relatedness (PMR) is estimated based on results of genotyping of 48 parents (31 males, 17 females) with microsatellites markers. The feasibility of PMR in estimation of genetic parameters is verified by comparison with pedigree related (PR) which is obtained from a complete pedigree. The results demonstrate that a high correlation (0.872) between them is found. Heritabilities are estimated using the PMR (0.52±0.13) and PR (0.55±0.22) with the same animal model. A cross-validation shows that the predictive abilities of models using the PMR and the PR are identical (0.81). From that, a conclusion can be made that PMR and PR predicted genetic values equally well in a population of juvenile turbot. Therefore PMR can be applied as an alternative of the PR when only parents are known. However, for a better performance, more markers and more families should be included in a further study. |
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| Keywords: | parental molecular relatedness pedigree relatedness turbot genetic parameters |
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