文献类型：期刊文献

中文题名：华贵栉孔扇贝主要经济性状对闭壳肌重的影响效果分析

英文题名：Effects of main economic traits on adductor weight of Chlamys nobilis(Reeve)

作者：刘志刚[1];章启忠[1];王辉[1]

机构：[1]广东海洋大学水产学院

年份：2009

期号：1

起止页码：61

中文期刊名：热带海洋学报

外文期刊名：Journal of Tropical Oceanography

收录：CSTPCD、、CSCD2011_2012、北大核心2008、北大核心、CSCD

基金：广东省科技厅资助项目(2007c20825)

语种：中文

中文关键词：华贵栉孔扇贝Chlamys;nobilis(Reeve);闭壳肌;经济性状;相关系数;决定系数;通径分析

外文关键词：Chlamys nobilis （Reeve）~ adductor; economic trait; correlation coefficient; determination co- efficient; path analysis

中文摘要：闭壳肌是华贵栉孔扇贝Chlamys nobilis(Reeve)的产品形式,它的大小成为选择育种的一个重要目标性状,由于其不易测性给选育工作带来困难。采用多元回归和通径分析来了解各经济性状对闭壳肌重的影响程度,从而找出与闭壳肌重的关联度最大的性状作为选育目标性状是本研究的目的。随机挑取同一养殖群体中的152只1龄华贵栉孔扇贝,对其壳长、壳高、壳宽、铰合线长、活体重、软体部重和闭壳肌重等7个性状进行测定并计算性状间的相关系数。以闭壳肌重为依变量,其它性状为自变量进行多元回归和通径分析,计算出对应的通径系数和决定系数。结果表明,7个性状间的相关系数均达到极显著水平(P<0.01);通径分析表明软体部重对闭壳肌重的直接影响最大(0.712),其次是壳宽(0.394),其它经济性状对闭壳肌重的影响是通过软体部重、壳宽来间接实现的;决定系数分析表明其结果与通径分析呈现一致的变化趋势。经多元回归分析,逐步剔除偏回归系数不显著的壳高和铰合线长,建立了壳长、壳宽、活体重和软体部重对闭壳肌重的回归方程:Y=-4.403+0.032X1+0.243X2-0.035X3+0.228X4,R2=0.856。本研究为华贵栉孔扇贝的选择育种提供理论依据。

外文摘要：The adductor is the product form of Chlamys nobilis （Reeve）, and its weight is an important objective trait for selective breeding. However, it is not easy to measure the adductor weight, which makes the selective breeding difficult. The aim of this paper is to study the degree of influence of each economic trait on adductor by adopting multiple regression analysis and path analysis in order to find the trait that is most closely associated with adductor and use it as the objective trait for selective breeding. A total of 152 one-year-old Chlamys nobilis （Reeve） were chosen at random for measuring the main economic traits, including shell length, shell height, shell width, hinge length, body weight, edible-part weight, and adductor weight. The correlation coefficients between the traits were calculated, and then multiple regression analysis and path analysis were conducted by taking the adductor weight as a dependent variable and other six economic traits as independent variables; the corresponding path coefficients and determination coefficients were also calculated. The results show that the correlation coefficients between the seven main economic traits are all very significantly different （P〈0. 01）; the edible-part weight has a predominantly direct effect on the adductor weight, （0. 712）, followed by the shell width （0. 394）; the other economic traits have indirect effects on the adductor weight through the edible-part weight and shell width. The analysis of determination coefficients shows a consistent trend with path coefficients. The shell height and hinge length, with insignificant partial regression coefficients, were gradually excluded, so the multiple regression equation, viz. the relation of adductor weight（Y） to shell height（X1 ）, shell width（X2）, body weight（X3 ） and edible-part weight（X4 ） was established as Y=-4.403＋0.032Xt＋0.243X2-0.035X3＋0.228X4,R^2=0.856.