中国蔬菜Issue(2)：94-105,12.DOI:10.19928/j.cnki.1000-6346.2024.2029
番茄品种耐低温结实性鉴定评价
Evaluation of Tomato's Low Temperature Fruiting Tolerance
摘要
Abstract
To screen the germplasm resources and determine the evaluation indexes and methods for low temperature fruiting tolerance,30 excellent tomato varieties at home and abroad were used as materials,and nine important traits were investigated and analysed during the flowering and fruiting period of tomato in the summer and autumn tomato crops,winter and spring tomato crops,respectively.The optimal regression equation and evaluation indexes for low temperature fruiting tolerance in tomato was established using multivariate statistical analysis.The results of correlation analysis showed that there were different degrees of correlation between different traits.Four principal components were extracted from the principal component analysis,and their cumulative contribution was 82.739%.The composite evaluation values(D)of the 30 tomato varieties ranged from 0.207 to 0.850,with QT-102 having the highest D value and QT-39 having the lowest D value.Cluster analysis classified the 30 tomato varieties into three groups:strong cold-tolerant,more cold-tolerant and cold-sensitive.Stepwise regression analysis established the optimal equation for predicting low-temperature fruiting tolerance in tomato:D=0.026α1-0.095α2+0.049α3+0.101α5+0.246α6+0.167α8+0.147α9+0.042,and the screened indicators were:mass weight of a single fruit,number of ventricles,fruit shape index,number of flowers in a single inflorescence,number of fruits in a single inflorescence,deformed fruit composite index,and the average grade of deformed fruits.The D value of the validated equation is highly significant and positively correlated with the regression value,and the coefficients of the seven indicators are linearly correlated with the D value to varying degrees.The results provide a theoretical basis for the selection and breeding of tomato varieties with low temperature fruiting tolerance.关键词
番茄/耐低温结实性/综合评价/最优回归方程Key words
tomato/low temperature fruiting tolerance/comprehensive evaluation/optimal regression equation引用本文复制引用
曹佳玲,文军琴,孙雪梅,任延靖,钟启文..番茄品种耐低温结实性鉴定评价[J].中国蔬菜,2025,(2):94-105,12.基金项目
青海省基础研究计划项目(青年)(2023-ZJ-953Q),国家重点研发计划项目(2022YFD1602400) （青年）
