作 者：
陈红林;司周旋;杜金星;许细丹;王军;王成辉
关键词：
瓯江彩鲤;体质量;形态性状;相关分析;回归方程;通径系数
摘 要：
为了解4种体色类型瓯江彩鲤(Cyprinuscarpiovar.color)("大花"–BR、"粉花"–BW、"全红"–WR、"粉玉"–WW)的形态性状与体质量的相关程度,本研究对12月龄的4种体色瓯江彩鲤的相关形态性状(体长X_1、体宽X_2、体高X_3、头长X_4和尾柄高X_5)与体质量(Y)进行了相关分析、回归分析及通径分析。结果显示,"全红"体色在所测性状的变异系数均为最高,具有相对较大的选育潜力;4种体色瓯江彩鲤中各形态性状与体质量的相关性均达到极显著水平(P<0.01),其中,以体高与体质量的相关程度最高。应用逐步引入–剔除法分别构建了4种体色瓯江彩鲤形态性状对体质量的回归方程:即BR为Y1=–517.069+12.628X_1+67.916X_2+94.885X_5;BW为Y_2=–525.711+38.085X_2+68.869X_3+72.206X_5;WR为Y_3=–502.952+90.980X_2+18.172X_4+113.965X5_;WW为Y_4=–537.119+22.932X_1+55.113X_2+48.203X_5。通过通径分析发现,BR和WR群体的X_2对Y的直接作用最大(0.387,0.504),BW群体的X_3对Y的通径系数最大(0.546),WW群体的X_1对Y的通径系数最大(0.508)。研究表明,4种体色瓯江彩鲤的形态特征差异较为明显,各形态性状对体质量的影响程度存在较大差异。研究结果将为瓯江彩鲤的进一步选育提供有益参考。
译 名：
Correlation and Path Coefficient Analysis of the Morphometric Traits and Body Weight for the Four Color Patterns of Oujiang Color Common Carp
作 者：
CHEN Honglin;SI Zhouxuan;DU Jinxing;XU Xidan;WANG Jun;WANG Chenghui;Key Laboratory of Freshwater Fisheries Germplasm Resources, Ministry of Agriculture and Rural Affairs; National Demonstration Center for Experimental Fisheries Science Education; Shanghai Engineering Research Center of Aquaculture; College of Fisheries Science and Life Science, Shanghai Ocean University;
关键词：
Oujiang color common carp;;Body weight;;Morphological traits;;Correlation analysis;;Regression equation;;Path coefficient
摘 要：
The relationship between five morphological traits [body length(X_1), body width(X_2), body height(X_3), head length(X_4), and caudal peduncle height(X_5)] and the body weight(Y) of 12-month-old Oujiang color common carp(Cyprinus carpio var. color), with four different body color patterns [red and black(RB), white and black(WB), whole red(WR), and whole white(WW)] were investigated using correlation analysis, regression analysis, and path analysis. The results showed that the coefficient of variation of all the studied traits was highest in the WR fish, demonstrating that the WR had the greatest potential for selective breeding. For the four different color patterns, the correlation coefficients among the morphological traits and body weight were all extremely significant(P≤0.01), and the greatest correlation coefficient was found between the body height and body weight. The multiple regression equations obtained with the stepwise regression method for the four body color patterns were listed as Y_1 = –517.069+12.628 X_1 +67.916 X_2 +94.885 X_5(RB); Y_2 =–525.711+38.085 X_2 +68.869 X_3 +72.206 X_5(BW); Y_3=–502.952+90.980 X_2 +18.172 X_4 +113.965 X_5(WR); Y_4 = –537.119+22.932 X_1 +55.113 X_2 +48.203 X_5(WW). The path coefficient analysis showed the highest direct effect of body width on the weight in the RB(0.387) and WR(0.504) fishes, and body height on weight in the WB fishes(0.546), and body length on weight in the WW fishes(0.508). The current study indicated that the morphological differences among the four body color patterns of the Oujiang color common carp had different degrees of influence on the morphological traits of body weight. Consequently, this study provides important insights that can be utilized for selective breeding of Oujiang color common carp in the future.
