非直接选育对瓯江彩鲤形态性状的影响  

Effect of indirect breeding on morphological characters in Oujiang color common carp

作　　者：王芙燕 柯景 陈晓雯[1] 王军[1] 王成辉[1] WANG Fuyan;KE Jing;CHEN Xiaowen;WANG Jun;WANG Chenghui(Key Laboratory of Freshwater Aquatic Germplasm Resources Certificated by the Ministry of Agriculture and Rural Affairs/National Experimental Teaching Demonstration Center of Aquatic Science,Shanghai Ocean University,Shanghai 201306,China)

机构地区：[1]农业农村部淡水水产种质资源重点实验室,水产科学国家级实验教学示范中心,上海海洋大学,上海201306

出　　处：《水产科技情报》2024年第3期137-143,共7页Fisheries Science & Technology Information

基　　金：国家自然科学基金项目(32172959)。

摘　　要：在鱼类育种中,体质量通常是直接选育的目标性状,形态性状因与体质量的相关性而受到非直接选育的影响。为探讨非直接选育对形态性状的影响,以体质量和体色为目标性状、经过11代闭锁群体继代选育的5种体色瓯江彩鲤(“全红”“大花”“麻花”“粉玉”和“粉花”)选育系以及其奠基群体为材料,进行了与奠基群体形态性状相关的分析研究。单因素方差分析发现,在25个形态比例性状中,5个选育系有16~21个性状与奠基群体存在显著差异(P<0.05)。差异倍数分析显示,2个性状在所有选育系中上调明显,1个性状则下调明显。主成分分析显示,5个体色选育系均能与奠基群体明显区分开来;聚类分析发现,奠基群体的所有个体单独聚为一支,与5个选育系距离较远;判别分析指出,选育系与奠基群体间的判别准确率达100%。但以上分析均显示,5个选育系之间不能有效区分,相互间的形态差异较小。分析结果表明,非直接选育已对瓯江彩鲤的形态性状产生了较明显的影响。The body weight usually used as a targeted trait in fish breeding practices,but the morphological traits are always affected by indirect-breeding because of their correlation with body weight.In this work,five breeding strains of Oujiang color common carp(Cyprinus carpio var.color),namely Quanhong,Dahua,Mahua,Fenyu and Fenhua,selected by body weight and coloration for 11 generations and their foundation population were used to analyze effect of indirect-breeding on the morphological trains.The one-way ANOVA indicated that 16-21 morphological traits performed significant difference between the five breeding strains and the foundation population(P<0.05)within 25 investigated traits.The difference multiple analysis found that two morphological traits were signi-ficantly up-regulated in the five breeding strains,and one morphological strain was significantly down-regulated in the foundation population.The principal component analysis showed that all the five breeding strains could be clearly distinguished from the foundation population.The cluster analysis showed that all the individuals of the foundation population were clustered into one branch,which was far away from the five breeding strains.The discrimination accuracy between the breeding strains and the foundation population reached 100%by the discriminant analysis.However,the above analyses showed there were lowly morphological difference and difficult discrimination among the five breeding strains.It could be concluded that the indirect-breeding process has made significant effect on the morphological traits in Oujiang color common carp.

关 键 词：瓯江彩鲤 选育群体 奠基群体 多元统计分析 形态差异 

分 类 号：S917.4[农业科学—水产科学]