上海海洋大学学报2024，Vol.33Issue(5)：1053-1063,11.DOI:10.12024/jsou.20240204434
梭鲈快速生长品系F3基因型与生长性状关联分析
Correlation analysis between genotypes and growth traits of fast growing strain F3 of pikeperch(Sander lucioperca)
摘要
Abstract
In this study,we conducted association analysis between microsatellite markers and growth traits such as body weight,total length,body length,body height,body thickness,head length,snout length,caudal stalk height and caudal length in the F3 population of pikeperch(Sander lucioperca),the fast-growing strain,to identify markers for genetic breeding.The average allele number for each marker was 4.5.The average observed heterozygosity at 0.746(ranging from 0.520 to 0.954),with expected heterozygosity recorded at 0.691(with a range of 0.441 to 0.851).The average polymorphism information content was 0.641.The results showed that 38 microsatellite markers had significant association with at least one trait(P＜0.05),among which 21 markers,such as HLJSL018,HLJSL021 and HLJSL022,had extremely significant association with the corresponding trait(P＜0.01).Specifically,we detected several 2-21 significant microsatellite markers for 9 traits,ranging from 2 to 21,of which only two markers(HLJSL039 and HLJSL042)were identified for body length(P＜0.05);but there are 21 markers significantly associated with the height of the tail stalk,among which 11 markers such as HLJSL018,HLJSL021,and HLJSL022 are highly significant(P＜0.01).There are 8 markers significantly associated with body mass,of which HLJSL018 and HLJSL067 are highly significant(P＜0.01).A total of 195 dominant genotypes,with a proportion of over 5％ higher than the overall mean,were obtained in 38 markers.Each marker obtained 1-10 dominant genotypes,among which HLJSL073 obtained the least dominant genotypes and HLJSL079 obtained the most dominant genotypes.In summary,we assessed the genetic structure of the pikeperch breeding population and identified markers closely associated with growth traits,which can inform the genetic selection of pikeperch.关键词
梭鲈/基因型/生长性状/关联分析Key words
pikeperch/genotype/growth traits/association analysis分类
农业科技引用本文复制引用
潘亚丹,鲁翠云,孙志鹏,刘天奇,张渴新,郑先虎..梭鲈快速生长品系F3基因型与生长性状关联分析[J].上海海洋大学学报,2024,33(5):1053-1063,11.基金项目
科技创新2030重大项目(2023ZD0406505) （2023ZD0406505）
中国水产科学研究院基本业务费团队项目(2023TD22) （2023TD22）
国家水产种质资源平台项目(FGRC18537) （FGRC18537）
