| 三角帆蚌紫色选育系1龄阶段内壳色及生长性状的遗传参数估计 |
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| 引用本文： | 王照旗,韩学凯,白志毅,李家乐.三角帆蚌紫色选育系1龄阶段内壳色及生长性状的遗传参数估计[J].水产学报,2014,38(5):644-650. |
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| 作者姓名： | 王照旗 韩学凯 白志毅 李家乐 |
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| 作者单位： | 上海海洋大学农业部淡水水产种质资源重点实验室, 上海 201306;上海海洋大学上海市水产养殖工程技术研究中心, 上海 201306;上海海洋大学农业部淡水水产种质资源重点实验室, 上海 201306;上海海洋大学上海市水产养殖工程技术研究中心, 上海 201306;上海海洋大学农业部淡水水产种质资源重点实验室, 上海 201306;上海海洋大学上海市水产养殖工程技术研究中心, 上海 201306;上海海洋大学农业部淡水水产种质资源重点实验室, 上海 201306;上海海洋大学上海市高校水产养殖学E-研究院, 上海 201306;上海海洋大学上海市水产养殖工程技术研究中心, 上海 201306 |
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| 基金项目： | 国家自然科学基金（31272657）；国家科技支撑计划（2012BAD26B04）；上海市青年科技启明星计划项目（12QA1401400） |
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| 摘 要： | 采用群体选育辅助种内群体间杂交选育的方法,以内壳色、体质量作为选育性状,经过连续4代的选育获得了紫色选育系F4。本实验以F4为亲本进行繁殖,利用6对微卫星标记,对15个同批繁育的F4母蚌的1龄后代进行亲子鉴定,鉴别出了来自12个父本、15个母本的42个全同胞家系,使用ASREML软件的约束极大似然法对三角帆蚌内壳色及生长性状进行了遗传参数分析。结果显示,内壳色颜色参数L*、a*、b*、dE*的遗传力分别为0.31±0.22、0.11±0.08、0.36±0.18、0.29±0.19,L*、a*、b*之间的遗传相关和表型相关均较低,范围为0.08~0.47和0.04~0.32,L*与dE*相关性最大,遗传相关为-0.94±0.06,表型相关为-0.96±0.01;生长性状壳长、壳高、壳宽、体质量和壳重的遗传力分别为0.24±0.19、0.37±0.27、0.26±0.16、0.26±0.17、0.31±0.19,各性状间遗传相关和表型相关均为正相关,分别为0.71~0.92、0.66~0.94;颜色参数与生长性状的遗传相关和表型相关均很低,为0.02~0.18。三角帆蚌紫色选育系1龄阶段内壳色和生长性状的遗传力多为中高水平,对其继续进行遗传改良预期能够获得良好遗传进展。内壳色与生长性状的相关度很低,无法实现相互选择,体质量与其他生长性状相关均较紧密,表明将内壳色、体质量作为目标性状进行同步选育的方法合理,可实现同时改良壳色及生长性能的目的。
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| 关 键 词： | 三角帆蚌 内壳色 生长性状 遗传参数 亲子鉴定 |
| 收稿时间： | 1/2/2014 12:00:00 AM |
| 修稿时间： | 2014/2/21 0:00:00 |
Estimates of genetic parameters for inner shell color and growth straits during one year old stage in the purple strain of Hyriopsis cumingii using microsatellite based parentage assignment |
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| WANG Zhaoqi,HAN Xuekai,BAI Zhiyi and LI Jiale.Estimates of genetic parameters for inner shell color and growth straits during one year old stage in the purple strain of Hyriopsis cumingii using microsatellite based parentage assignment[J].Journal of Fisheries of China,2014,38(5):644-650. |
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| Authors: | WANG Zhaoqi HAN Xuekai BAI Zhiyi and LI Jiale |
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| Affiliation: | Key Laboratory of Freshwater Fisheries Genetic Resources, Shanghai Ocean University, Ministry of Agriculture, Shanghai 201306, China;Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai 201306, China;Key Laboratory of Freshwater Fisheries Genetic Resources, Shanghai Ocean University, Ministry of Agriculture, Shanghai 201306, China;Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai 201306, China;Key Laboratory of Freshwater Fisheries Genetic Resources, Shanghai Ocean University, Ministry of Agriculture, Shanghai 201306, China;Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai 201306, China;Key Laboratory of Freshwater Fisheries Genetic Resources, Shanghai Ocean University, Ministry of Agriculture, Shanghai 201306, China;E-Institute of Shanghai Universities, Shanghai Ocean University, Shanghai 201306, China;Shanghai Engineering Research Center of Aquaculture, Shanghai Ocean University, Shanghai 201306, China |
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| Abstract: | The purple strain F4 of Hyriopsis cumingii was produced using intraspecific hybridization assisted by populations breeding for four generations with the breeding indexes of the inner shell color and body weight.In this paper,six polymorphic microsatellite markers were employed to identify the male parents of offspring from 15 female parents of the purple strain F4.Parentage assignment showed that 42 full-sib families from 12 male parents and 15 female parents were obtained.Heritabilities,genetic correlations and phenotype correlations for inner shell color and growth traits were estimated using AS REML method during one year old stage.The heritability estimates of the color parameters L*,a*,b*,dE* were 0.31±0.22,0.11±0.08,0.36±0.18,0.29±0.19,respectively.The genetic correlations and phenotypic correlations of L*,a*,b* were low,with the ranges of 0.08-0.47 and 0.04-0.32,but the correlations between L* and dE* were very high(rg=-0.94±0.06,rp=-0.96±0.01).The heritability estimates for shell length(0.24±0.19),shell height(0.37±0.27),shell width(0.26±0.16),wet weight(0.26±0.17),and shell weight(0.31±0.19)were moderate and high.A positive and high genetic correlation and phenotypic correlation were found among growth traits(rg=0.71-0.92,rp=0.66-0.94).The genetic correlations and phenotypic correlations between the color parameters and growth traits were very low,ranging from 0.02 to 0.18.The results showed that most of the heritabilities of color parameters and growth traits were moderate and high,which suggested that this strain should respond rapidly to selective breeding.Mutual selection couldn't be achieved due to the low correlations between inner shell color and growth traits,and the body weight should respond to targeted selection with the high phenotype correlations and genetic correlations with other growth traits.Therefore,selective breeding for inner shell color and body weight was a reasonable method to improve inner shell color and growth traits at the same time. |
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| Keywords: | Hyriopsis cumingii inner shell color growth traits genetic parameters parentage assignment |
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