中国渔业质量与标准2023，Vol.13Issue(6)：19-25,7.DOI:10.3969/j.issn.2095-1833.2023.06.003
南沙群体大珠母贝表型性状比较及通径分析
Comparison and path analysis of phenotypic traits of wild Pinctada maxima in Nansha population
摘要
Abstract
In order to determine the influence of external morphological traits of wild Pinctada maxima in Nansha pop-ulation on its body weight and provide the reference index for artificial breeding,the 1-year-old wild P.maxima collected in the natural sea area of Nansha Islands were taken as the research objects.The shell length,shell height,shell width and hinge length of external morphological traits and the body weight were measured and counted,and the correlation,multiple stepwise regression and path analysis were carried out.The results showed that the coefficient of variation of each trait index was(13.751%,38.947%),and the correlation coefficients of each trait reached a very significant level(P＜0.01).The optimal regression equation was established by excluding morphological traits with no significant difference,R2 =0.933;The path analysis results showed that the external morphological traits with the greatest direct effect on body weight of P.maxima in Nansha population were shell width(0.439),and the indirect effect of shell length on body weight through shell height was the greatest(0.384).The determination coefficient of shell width on body weight was 0.193,and that of shell width through shell height was the greatest(0.312).The re-sults show that the selection of shell width should be taken into account when the body weight of wild P.maxima in Nansha population is used as the breeding target.[Chinese Fishery Quality and Standards,2023,13(6):19-25]关键词
贝类选育/通径分析/相关分析/大珠母贝/外部形态性状/体质量Key words
shellfish breeding/path analysis/correlation analysis/Pinctada maxima/external morphological traits/body weight分类
水产学引用本文复制引用
张钰伟,邓正华,黄星美,赵旺,温为庚,王雨,陈明强,于刚..南沙群体大珠母贝表型性状比较及通径分析[J].中国渔业质量与标准,2023,13(6):19-25,7.基金项目
国家重点研发计划(2019YFD0900905) （2019YFD0900905）
中国水产科学研究院中央级公益性科研院所基本科研业务费专项(2021XT02 （）
2020TD55) （）
国家现代农业产业技术体系(CARS-49) （CARS-49）
中国水产科学研究院南海水产研究所基本科研业务费专项(2020CY01) （2020CY01）
三亚市农业科技创新项目(2019NK13) （2019NK13）
