基于通径分析和灰色关联分析岩原鲤形态特征与体质量的关系  

Relationship Between Morphological Traits and Body Weight of Procypris rabaudi by Path Analysis and Grey Correlation Analysis

作　　者：闫卉果 董智玲 李雨 马婷婷 罗辉[1,2] 叶华 何文平[1,2] YAN Huiguo;DONG Zhiling;LI Yu;MA Tingting;LUO Hui;YE Hua;HE Wenping(College of Fisheries,Southwest University,Chongqing 400715,China;Key Laboratory of Freshwater Fish Reproduction and Development(Ministry of Education),Chongqing 400715,China)

机构地区：[1]西南大学水产学院,重庆400715 [2]淡水鱼类资源与生殖发育教育部重点实验室,重庆400715

出　　处：《西南大学学报（自然科学版）》2022年第5期74-81,共8页Journal of Southwest University(Natural Science Edition)

基　　金：国家自然科学基金项目(32071651);重庆市自然科学基金项目(cstc2020jcyj-msxmX0438);中央高校基本科研业务费专项资金项目(XDJK2019C025).

摘　　要：分析120尾20月龄岩原鲤Procypris rabaudi共11个形态特征的相关性及其与体质量的关系.所有特征对的相关系数都呈显著正相关,从0.394到0.981.通径分析表明,有3个特征体长(X_(2))、体高(X_(3))、体宽(X_(4))能直接极显著影响体质量(Y);有2个特征全长(X_(1))和尾柄高(X_(10))能直接显著影响体质量(Y).最佳的线性回归方程为:Y=-93.112+2.094 X_(1)+4.063 X_(2)+7.623 X_(3)+4.974 X_(4)+7.260 X_(10).该研究首次采用灰色关联分析方法探究了岩原鲤形态特征与体质量的关系,其灰色关联系数平均值在0.699~0.897之间,体长(X_(2))与体质量(Y)的灰色关联度最高.综合通径分析和灰色关联分析结果,在进行岩原鲤选育时应以体长(X_(2))为主要,全长(X_(1))、体高(X_(3))为辅进行选育.This study analyzed the correlations among 11 growth related traits of the 20-month-old Procypris rabaudi and their effects on body weight.The correlation coefficients of all trait pairs were significantly high,ranging from 0.394 to 0.981.Among 11 X-Y pairs,the correlation coefficient between traits X_(2) and Y was the highest,whereas that between X_(7) and Y was the lowest.Path analysis indicated that traits X_(2),X_(3) and X_(4) directly highly significantly affected the body weight(Y),with path coefficients of 0.358,0.243 and 0.101,respectively.Traits X_(1) and X_(10) directly significantly affected the body weight(Y),with the path coefficients of 0.224 and 0.099,respectively.The determination coefficient(di)of traits X_(1),X_(2),X_(3),X_(4) and X_(10) was 0.961,indicating that the 5 traits were the key factors affecting body weight.Finally,a best-fit linear regression equation was constructed as Y=-93.112+2.094X_(1)+4.063X_(2)+7.623X_(3)+4.974X_(4)+7.260X_(10).We used grey correlation analysis method to explore the relationship between morphological traits and body weight of P.rabaudi for the first time.The average grey correlation coefficients of morphological traits to Y were between 0.699 and 0.897,and the grey correlation degree between body length(X_(2))and body weight(Y)was the highest.The comprehensive comparison showed that X_(2) should be used as the main selective trait,X_(1) and X_(3) should be used as assisted selective traits in the breeding of P.rabaudi.

关 键 词：岩原鲤 形态特征 体质量 通径分析 灰色关联分析 

分 类 号：Q959.468[生物学—动物学]