44个柚品种果实Vc与酸含量回归关系的计算机拟合  

Fitting Regression Model of VC and Acid Contents in the Fruits of 44 Pummelo Varieties

作　　者：陈华林[1] 程昌凤[1] 杨会容 夏先绪[1] 

机构地区：[1]重庆市果树研究所,重庆江津402260

出　　处：《四川果树》1998年第2期11-15,共5页

摘　　要：根据1991-1994年连续4年观测资料的平均值,对44个柚品种果实Vc与酸含量的相关关系,通过计算机编程进行了直线方程、双曲线、指数函数、幂函数、对数函数、S型曲线和二次多项式曲线等8种常见方程式配合,确定了二次多项式Y=32.12-135.18X+50.43X^2(相关指数R=0.868)为其最适合的回归方程.另外,各年份间这种回归曲线图表现相对一致,更进一步证实柚品种基因型中果实VC与总酸含量之间确实存在着一种极显著而稳定的相关关系.Based on four years'data in 1991 - 1994, the regression model was studied between Vc and acid contents in the fruits of 44 pummelo varieties. After fitting 8 kinds of conventional regression equations by computer programing,quadric polynomial curve Y = 132.12 - 135.18X + 50.43X2 (R =0.868**)was ascertained as the most suitable regression equation. The identity of regression graphs among 4 years showed that there was a stable and significant correlation between Vc and acid contents in pumello varietis.

关 键 词：酸含量 果实 品种 回归关系 相关关系 观测资料 平均值 计算机编程 指数函数 连续 

分 类 号：S662.1[农业科学—果树学] S896.3[农业科学—园艺学]