不同月龄双线紫蛤数量性状的相关性和通径分析  

Correlation and path analysis of quantitative traits of different-month Soletellina diphos

作　　者：巫旗生[1] 罗娟[1] 陈珍赐 林炫锋 祁剑飞[1] 宁岳[1] 郭香[1] 罗辉玉 曾志南[1] 葛辉[1] WU Qisheng;LUO Juan;CHEN Zhenci;LIN Xuanfeng;QI Jianfei;NING Yue;GUO Xiang;LUO Huiyu;ZENG Zhinan;GE Hui(Key Laboratory of Cultivation and High-value Utilization of Marine Organisms in Fujian Province,Fujian Collaborative Innovation Center for Exploitation and Utilization of Marine Biological Resources,Fisheries Research Institute of Fujian,Xiamen 361013,China;Fujian Nanri Island Marine Biotechnology Co.,Ltd.,Putian 351174,China;Putian Aquatic Science Research Institute,Putian 351199,China)

机构地区：[1]福建省水产研究所,福建省海洋生物增养殖与高值化利用重点实验室,福建省海洋生物资源开发利用协同创新中心,福建厦门361013 [2]福建省南日岛海洋生物技术有限公司,福建莆田351174 [3]莆田市水产科学研究所,福建莆田351199

出　　处：《渔业研究》2024年第3期242-247,共6页Journal of Fisheries Research

基　　金：国家贝类产业技术体系项目(CARS-49);国家海洋水产种质资源库(2024);福建省区域发展项目(2021N3002);福建省海洋服务与渔业高质量发展专项资金项目(FJHY-YYKJ-2024-1-13)。

摘　　要：为研究双线紫蛤形态性状与体质量之间的关系,随机选取6、12和18月龄双线紫蛤(Soletellina diphos)各50个个体,分别测量壳长(SL)、壳高(SH)、壳宽(SW)、体质量(BW)共4个数量性状,采用相关分析和通径分析的方法分别计算不同月龄群体对体质量的通径系数和决定系数。相关分析结果显示,6、18月龄群体均是壳长与体质量的相关系数最大(P<0.01)。根据多元回归分析结果,建立了3个月龄群体形态性状对体质量性状的多元回归方程:BW_(6)=-1.336+0.020SL+0.146SW+0.081SH,R^(2)=0.976;BW_(12)=-29.701+0.584SL+0.695SW,R^(2)=0.972;BW_(18)=-88.160+1.140SL+1.660SW,R^(2)=0.911。通径分析结果表明,6月龄群体中影响体质量的主要因素为壳宽(0.466),12和18月龄群体则为壳长(0.753,0.705),决定系数分析结果与通径分析结果相一致。本研究结果为双线紫蛤种质资源保护与利用提供了基础资料。To investigate the correlation between morphological traits and body mass in Soletellina diphos,50 individuals from the 6-month-old,12-month-old,and 18-month-old populations were selected,and four quantit-ative traits,including shell length(SL),shell height(SH),shell width(SW),and body weight(BW),were meas-ured.Correlation analysis and path analysis methods were employed to calculate path coefficients and determin-ation coefficients for body weight across different age groups.Correlation analysis revealed that the highest cor-relation coefficient between SL and BW was observed in the 6-month-old and 18-month-old populations(P<0.01).Multiple regression analysis yielded regression equations for each age group:BW_(6)=-1.336+0.020SL+0.146SW+0.081SH,R^(2)=0.976;BW_(12)=-29.701+0.584SL+0.695SW,R^(2)=0.972;BW_(18)=-88.160+1.140SL+1.660SW,R^(2)=0.911.Path analysis identified SW as the primary determinant of BW in the 6-month-old popula-tion(0.466),while SL played a predominant role in the 12-month-old and 18-month-old populations(0.753 and 0.705,respectively).Determination coefficient analysis corroborated these findings.This study furnishes found-ational data for the conservation and exploitation of S.diphos germplasm resources.

关 键 词：双线紫蛤 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]