香港巨牡蛎雌雄群体的数量性状通径分析  

Path analysis of quantitative traits of male and female Hong Kong oyster Crassostrea hongkongensis

作　　者：肖述[1,2,3] 符政君 喻子牛[1,2,3] 

机构地区：[1]中国科学院海洋生物资源可持续利用重点实验室 [2]广东省应用海洋生物学重点实验室 [3]中国科学院南海海洋研究所,广东广州510301

出　　处：《南方水产科学》2011年第4期1-9,共9页South China Fisheries Science

基　　金：国家高技术研究发展计划(863计划)项目(2006AA10A409);国家贝类产业技术体系-香港牡蛎良种繁育

摘　　要：随机选择性成熟的香港巨牡蛎(Crassostrea hongkongensis)不同性别组(雌95个、雄75个),对5个形态与产量性状进行测量,应用相关分析、多元逐步回归和通径分析等方法计算不同性状对全质量和肉质量的通径系数、决定系数及回归方程。结果表明,雌性群体中高与长、宽相关不显著,其他均显著相关(P<0.05);对全质量而言,雄性组肉质量直接影响最大,其次是体高,而雌性组体高直接影响最大,其次是体长;对肉质量是雄性组全质量的直接影响最大,其次是体宽,而雌性组体宽影响最大,其次为全质量;依据逐步回归分析,对2种产量性状分别建立了不同性别组的4个回归方程。该研究结果为选择育种的具体应用提供了重要参考依据。We measured 5 morphological and production traits from 170 randomly chosen individuals（75 males and 95 females） of Crassostrea hongkongensis using correlation analysis,stepwise regression analysis and path analysis to study the path coefficient,determination coefficient and regression equation of different traits on total weight and meat weight.The results show that there are significant correlations（P0.05） among the 5 traits for male group,while for female group,significant correlations are found except between shell height and length,shell height and width;meat weight and shell height have predominant effects on total weight for male group,but for female group,shell height and shell length have more direct effects on total weight than the other traits;for male group,total weight has direct predominant effect on meat weight,then comes shell width,while for female group,meat weight is affected most by shell width,then by total weight.According to regression analysis,four different regression equations on 2 different production traits were established for each sexual group of C.hongkongensis.The results provide important references for the selective breeding of C.hongkongensis.

关 键 词：香港巨牡蛎 数量性状 相关系数 决定系数 通径分析 

分 类 号：S917[农业科学—水产科学]