江西农业学报2024，Vol.36Issue(3)：34-39,6.DOI:10.19386/j.cnki.jxnyxb.2024.03.006
基于3种非线性回归模型的薄壳山核桃果实生长发育研究
Study on Growth and Development of Pecan Fruit Based on Three Nonlinear Regression Models
摘要
Abstract
Five commercial pecan varieties('Pawnee','Mahan','Caddo','Surprise'and'Baker')were used as test materials.The growth parameters of the pecan fruit were measured regularly,such as longitudinal diameter and transverse diameter,and the fruits dissected in transverse section were examined at morphological stages.Longitudinal diameter and transverse diameter were fitted by Logistical model,quadratic polynomial and cubic polynomial.The results showed that the seasonal growth of five pecan fruits performed'S'curve,and the accumulation of longitudinal diameter was always bigger than that of transverse diameter.The fitting results of cubic polynomial was better than those of Logistic model and quadratic polynomial,and the coefficient of cubic polynomial was more than 0.991,showing significant correlation with actual growth data,which proved that cubic polynomial could provide more accurate forecast for pecan fruit seasonal growth and development.The fitting equation predetermined the development stages of the fruits.Combined with the fruit anatomy results,the growth and development process of pecan fruit was revealed.关键词
薄壳山核桃果实/果实生长发育/Logistic模型/二次多项式/三次多项式Key words
Pecan fruit/Fruit growth and development/Logistic model/Quadratic polynomial/Cubic polynomial分类
农业科技引用本文复制引用
周米生,王陆军,姜春武..基于3种非线性回归模型的薄壳山核桃果实生长发育研究[J].江西农业学报,2024,36(3):34-39,6.基金项目
中央财政科技推广项目"江淮丘陵地区'薄—榛—椒'复合经营技术推广示范"(皖[2021]TG04号). （皖[2021]TG04号）
