虾夷扇贝家系早中期生长性状比较与遗传参数估计  

The growth traits comparison and genetic parameter evaluation of Patinopecten yessoensis in early and mid-stage

作　　者：王俊杰[1] 丁君[1] 常亚青[1] 商国良[1] 王轶南[1] 

机构地区：[1]大连海洋大学农业部北方海水增养殖重点实验室,辽宁大连116023

出　　处：《水产学报》2014年第9期1318-1325,共8页Journal of Fisheries of China

基　　金：国家"八六三"高技术研究发展计划(2012AA10A410);农业部"九四八"项目(2011-G12);国家海洋公益项目(201205031-03)

摘　　要：为获得虾夷扇贝快速生长家系及早中期生长性状遗传参数,以2011年培育的虾夷扇贝F28个半同胞和16个全同胞家系为实验材料,在其7～13月龄期间,测量其各生长性状,进行各生长性状变异分析、各生长性状多重比较分析,估计虾夷扇贝早中期各性状的遗传力和重复力,并对壳高、壳长、壳宽与活体质量各性状进行表型相关性和遗传相关性分析。结果表明,虾夷扇贝早中期生长性状中活体质量的变异系数最大,为37.40%～69.81%;壳高的变异系数最小,为12.74%～22.77%,表明虾夷扇贝各生长性状均有较大的选育空间。研究获得壳高、壳长、壳宽和活体质量快速生长家系Py11-02、Py11-03和Py11-15号家系。虾夷扇贝壳高、壳长、壳宽和活体质量的遗传力分别为0.220～0.586、0.151～0.511、0.200～0.742、0.219～0.617,为中高等遗传力;重复力分别为0.11～0.29、0.08～0.25、0.10～0.36、0.11～0.30,为中低等重复力;壳高、壳长、壳宽与活体质量间的表型相关分别为0.926～0.935、0.929～0.943、0.692～0.937,均达到极显著水平（P〈0.01）;遗传相关分别为0.908～0.984、0.921～0.975、0.946～0.981,均表现出高度遗传相关。研究为虾夷扇贝良种培育提供一定的理论依据。Eight half-sib families and 16 full-sib families of F2 generation of Patinopecten yessoensis were developed as experimental materials for obtaining fast-growth families and evaluating the genetic parameters of growth traits in early and medium-term. Four traits（ shell height,shell length,shell width and body weight） were measured from 7-months to 13-months,coefficient of variation and multiple comparison of 4traits were analyzed,heritability and repeatability were evaluated,and phenotypic correlation and genetic correlation were estimated. The results showed that the variation coefficient of body weight ranged from37. 40% to 69. 81%,more than that of other traits,while,the variation coefficient of shell hight ranged from12. 74% to 22. 77%,less than that of other traits,which indicated that growth traits of Patinopecten yessoensis had great potential for breeding improvement. Py11-02,Py11-15 and Py11-03 were identified as fast growth families by analysis of multiple comparison of 4 traits. Heritability of shell height,shell length,shell width and body weight were 0. 220-0. 586,0. 151-0. 511,0. 200-0. 742,0. 219-0. 617 respectively,belong to high or medium heritability. The repeatability of 4 traits were 0. 11-0. 29,0. 08-0. 25,0. 10-0. 36,0. 11-0. 30 respectively,belong to medium or low repeatability. Phenotypic correlation of shell height,shell length,shell width for body weight were 0. 926-0. 935,0. 929-0. 943,0. 692-0. 981 respectively,all of that reached extremely significant level（ P〈0. 01）. Genetic correlation of shell height,shell length,shell width for body weight were 0. 908-0. 984,0. 921-0. 975,0. 946-0. 981 respectively,belong to high genetic correlation. The study can provide some theoretical support for breeding of P.yessoensis.

关 键 词：虾夷扇贝 家系 生长性状 遗传参数 

分 类 号：S968.3[农业科学—水产养殖]