Combining ability and heterosis analysis over two environments in a diallel cross of three families of the clam Meretrix meretrix

IOCAS-IR

	Combining ability and heterosis analysis over two environments in a diallel cross of three families of the clam Meretrix meretrix
	DAI Ping ; WANG Hongxia ; XIAO Guoqiang ; LIU Baozhong
发表期刊	Acta Oceanologica Sinica
ISSN	0253-505X
	2014-10-15
出版年	2014
卷号	v.33 期号:10 页码:39-44
文献类型	CNKI期刊论文
摘要	A 3×3 complete diallel cross comprising three families of the clam Meretrix meretrix(P1, P2 and P3) was used to determine the combining ability of parental families and heterosis of F1 under indoor and openair environments for growth traits. Analysis of variance for shell length and whole body weight indicated highly significant cross effects, environment effects and the interaction of cross by environment. General combining ability(GCA) and specific combing ability exhibited great variation among crosses and between two environments. Pooled over environments, P2 was the top combiner among the three parental families for both traits studied. The cross of P1 and P3 had the highest SCA. Additionally, significant reciprocal effects were observed. For individual environment, about half of the crossbred combinations showed favorable Mid-parent heterosis(MPH)(>1%) for the shell length and whole body weight. Our data has shown that non-additive genetic and reciprocal effects constituted the major sources of genetic variation for both shell length and whole body weight, which indicates that crossbreeding among selective families could further explore the heterotic effects.
关键词	Meretrix meretrix,general and specific combining ability,reciprocal effects,heterosis,diallel cross
CNKI专辑号	A;D;
CNKI专辑名称	基础科学;农业科技;
CNKI专题号	D052;
CNKI专题名称	水产和渔业;
分类号	S917.4
收录类别	中科院核心 ; 中科院扩展
语种	英文;
资助项目(基金）	The National High-Tech R&D Program of China(863 Program)under contract No.2012AA10A410 ; the Key Technologies R&D Program of Jiangsu Province under contract No.BE2011372
文献类型	CNKI期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/190284
专题	中国科学院海洋研究所
作者单位	1.KeyLaboratoryofExperimentalMarineBiology,InstituteofOceanology,ChineseAcademyofSciences 2.UniversityofChineseAcademyofSciences 3.ZhejiangMaricultureResearchInstitute
推荐引用方式 GB/T 7714	DAI Ping,WANG Hongxia,XIAO Guoqiang,et al. Combining ability and heterosis analysis over two environments in a diallel cross of three families of the clam Meretrix meretrix. 2014.