中国水产科学2012，Vol.19Issue(4)：700-706,7.DOI:10.3724/SP.J.1118.2012.00700
长牡蛎成体生长性状的遗传参数估计
Estimates of genetic parameters for growth-related traits in adult Crassostrea gigas
摘要
Abstract
Two year classes of the Pacific oyster (Crassostrea gigas) from the Oyster Selection Breeding Program were compared. Oysters were harvested at 360 days of age in 2009 and in 2010 and comprised 24 and 32 full-sib families, respectively. All oysters in both year classes were reared under the same conditions. Shell height, shell length, shell width, total weight, shell weight, meat weight and meat ratio (100% × meat weight/total weight) were measured in 30 oysters from each family. Growth-related traits showed significant differences between the two year classes (P<0.05). There was a tendency for oysters sampled in 2009 to have lower shell heights, meat weights and meat ratios than in 2010, but their total weights were higher in 2009. Except for the meat ratio, there was a significant positive linear correlation between shell height and the other growth-related traits in both year classes (P<0.05). Shell height and total weight showed higher heritabilities: 0.35 ± 0.15 (SE) and 0.27 ±0.13, respectively. All phenotypic and genetic correlations between two growth-related traits were positive. There was also a difference in the degree of correlation between two traits. The use of growth-related traits in breeding programs designed to improve growth is discussed.关键词
长牡蛎/成体/生长性状/遗传力/遗传相关Key words
Crassostrea gigas/ adult/ growth-related traits/ heritability/ genetic correlation分类
农业科技引用本文复制引用
王庆志,李琪,刘世凯,孔令锋..长牡蛎成体生长性状的遗传参数估计[J].中国水产科学,2012,19(4):700-706,7.基金项目
国家863计划项目(2006AA10A409) （2006AA10A409）
国家973计划项目(2010CB126406). （2010CB126406）
