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| 应用DF-REML法估计牙鲆性状遗传参数 | |
| 引用本文： | 顾宪明,刘永新,王凯,刘海金.应用DF-REML法估计牙鲆性状遗传参数[J].东北农业大学学报,2008,39(11). |
| 作者姓名： | 顾宪明 刘永新 王凯 刘海金 |
| 作者单位： | 1. 东北农业大学动物科学与技术学院,哈尔滨,150030 2. 上海水产大学生命科学与技术学院,上海,200090 3. 中国水产科学研究院,北京,100039 |
| 摘 要： | 应用单性状无重复模型,利用非求导约束最大似然法(DF-REML),对牙鲆在185、235、345、465日龄下的体长、体高、体重、肥满度等性状遗传参数进行估计。结果表明,以上指标各日龄下遗传力范围分别是0.23～0.3、0.2～0.29、0.22～0.32、0.19～0.26;性状表型方差中遗传方差所占比重较小,环境方差较大,性状表型值受环境影响较大;各日龄下的体长、体高、体重间表型相关极显著(P≤0.01),体长、体高与肥满度间呈极显著的负相关(P≤0.01),体重与肥满度表现为显著正相关(P≤0.05);遗传相关性表现趋势与表型相关性一致。 |
| 关 键 词： | 非求导约束最大似然法 牙鲆 遗传力 遗传相关 |
Estimation of genetic parameter for growth trait in Japanese flounder by DF-REML |
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| GU Xianming,LIU Yongxin,WANG kai,LIU Haijin.Estimation of genetic parameter for growth trait in Japanese flounder by DF-REML[J].Journal of Northeast Agricultural University,2008,39(11). | |
| Authors: | GU Xianming LIU Yongxin WANG kai LIU Haijin |
| Institution: | GU Xianming1,LIU Yongxin1,WANG kai2,LIU Haijin3 (1. College of Animal Science , Technology,Northeast Agricultural University,Harbin 150030,China,2. College of Life Science , Technology,Shanghai Fisheries University,Shanghai 200090,3. Chinese Academy of Fishery Sciences,Beijing 100039,China) |
| Abstract: | Genetic parameters of body length, body depth, body weight and condition factor in Japanese flounder on 185, 235, 345 and 465 days were estimated with no duplication model of single trait by DF-REML. The results showed that the ranges of heritability on different test days were from 0.23 to 0.3, from 0.2 to 0.29, from 0.22 to 0.75 and from 0.19 to 0.53, respectively. The ratio of genetic variance in phenotypic variance was smaller, the environmental variance was bigger. Positive phenotypic correlations were... |
| Keywords: | DF-REML flounder heritability genetic correlation |
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