河南农业科学 ›› 2022, Vol. 51 ›› Issue (6): 144-153.DOI: 10.15933/j.cnki.1004-3268.2022.06.016

• 畜牧·兽医 • 上一篇    下一篇

湘西呆鲤形态性状与体质量的相关性分析及曲线拟合

秦溱1,李金龙2,周先文1,3,戴华林1,王晓清1,谈晨1   

  1. (1.湖南农业大学动物科学技术学院,湖南 长沙 410128;2. 湖南省水产科学研究所,湖南 长沙 410153;3.湘西自治州畜牧水产事务中心,湖南 吉首 416000)
  • 收稿日期:2022-02-16 出版日期:2022-06-15 发布日期:2022-08-17
  • 基金资助:
    湖南省水产产业技术体系项目(2019);湘西州重点研发项目(2021NC2002)

Correlation Analysis and Curve Fitting between Morphological Traits and Body Weight of Cyprinus carpio var.Xiangxi

QIN Qin1,LI Jinlong2,ZHOU Xianwen1,3,DAI Hualin1,WANG Xiaoqing1,TAN Chen1   

  1. (1.College of Animal Science and Technology,Hunan Agriculture University,Changsha 410128,China;2.Fisheries Research Institute of Hunan Province,Changsha 410153,China;3.Xiangxi Autonomous Prefecture Animal Husbandry and Fishery Affairs Center,Jishou 416000,China)
  • Received:2022-02-16 Published:2022-06-15 Online:2022-08-17

摘要: 为探究湘西呆鲤(Cyprinus carpio var.Xiangxi)形态性状与体质量的关系,随机测量107尾湘西呆鲤的全长(X1)、体长(X2)、体高(X3)、体厚(X4)、躯干长(X5)、头宽(X6)、头长(X7)、吻长(X8)、眼径(X9)、眼后头长(X10)、尾柄长(X11)、尾柄高(X12)、眼间距(X13)、侧线鳞(X14)、侧线上鳞(X15)、侧线下鳞(X16)等16项形态性状指标和体质量(Y)。采用相关性分析、通径分析、多元回归分析及曲线拟合等方法,评价湘西呆鲤的形态性状对其体质量的影响程度。结果显示,湘西呆鲤16项形态性状中,有14项与体质量表现出极显著相关性,其中相关性较高的性状为体高(X3)>全长(X1)>体长(X2)>体厚(X4)>尾柄高(X12);体高(X3)对体质量的直接作用最大(0.433),且全长(X1)、尾柄长(X11)、尾柄高(X12)等性状均通过体高(X3)对体质量(Y)的间接作用最大,按决策作用大小,体高(X3)的决策系数最大,R2X3)=0.651;引入多元回归分析,构建出主要形态性状与体质量(Y)的多元回归方程:Y=-73.175+3.239X1+1.368X3+0.168X11+1.118X12;进一步对方程中各形态性状与体质量进行曲线拟合,体高(X3)的拟合优度最高,为0.964,曲线拟合方程:Y= 0.002X3 2.72。综上分析,湘西呆鲤体高是影响其体质量的主要关键性状,可作
为后期湘西呆鲤体质量选育改良的重要辅助性状。

关键词: 湘西呆鲤, 形态性状, 体质量, 相关性分析, 曲线拟合

Abstract: In order to explore the relationship between morphological traits and body weight of Cyprinus carpio var.Xiangxi,the total length(X1),body length(X2),body height(X3),body thickness(X4),trunk length(X5),head width(X6),head length(X7),snout length(X8),eye diameter(X9),length of head behind the eye(X10),tail handle length(X11),tail handle height(X12),eye cross(X13),lateral line scales(X14),lateral line upper scales(X15),lateral line lower scales(X16)and body weight(Y)of 107 Cyprinus carpio var.Xiangxi were measured at random.Correlation analysis,path analysis,multiple regression analysis and curve fitting were used to evaluate the effect of morphological traits on body weight of Cyprinus carpio var.Xiangxi. The results showed that 14 of the 16 morphological traits showed extremely significant correlation with body weight,and the traits with higher correlation were body height(X3)>total length(X1)> body length(X2)> body thickness(X4)> tail handle height(X12).The direct effect of body height(X3)on body weight(Y)was 0.433,and the indirect effect of total length(X1),tail handle length(X11)and tail handle height(X12)on body weight(Y)was the largest through body height(X3).According to the size of decision function,the decision coefficient of body height(X3)was the largest,R2X3)=0.651;Multiple regression analysis was gradually introduced to construct the multiple regression equation between main traits and body weight(Y):Y=⁃73.175+3.239X1+1.368X3+0.168X11+1.118X12.Further curve model fitting was carried out for each character and body weight(Y)in the equation. The goodness of fit of body height(X3)was the highest(0.964),and the curve fitting equation was Y=0.002X3 2.72.To sum up,it can be determined that body height is the main key trait affecting its body weight,which can be used as an important auxiliary trait for the breeding and improvement of body weight of Cyprinus carpio var. Xiangxi in the later stage.

Key words: Cyprinus carpio var. Xiangxi, Morphological trait, Body weight, Correlation analysis, Curve fitting

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