河南农业科学2025，Vol.54Issue(10)：51-59,9.DOI:10.15933/j.cnki.1004-3268.2025.10.006
150份玉米自交系茎秆性状及抗倒能力综合评价
Stalk Traits and Comprehensive Evaluation of Lodging Resistance of 150 Maize Inbred Lines
摘要
Abstract
The stem traits(including stem length,stem diameter,dry weight,dry weight per unit length of the aboveground 3rd to 5th internodes,stem puncture strength and stem crushing strength)of 150 improved American maize inbred lines(with Zheng 58 as the control)planted during 2023-2024 were analyzed.Correlation analysis,cluster analysis,principal component analysis(PCA),and grey relational analysis were comprehensively applied to evaluate lodging resistance,and screen inbred lines with high lodging resistance,so as to provide theoretical support for the breeding of lodging-resistant maize varieties.The results showed that among the 150 maize inbred lines,the dry weight of the aboveground 3rd internode exhibited the richest variation,with the largest variation coefficients of 46.51％and 39.52％in two years,respectively.Correlation analysis revealed that stem crushing strength was extremely significantly positively correlated with stem puncture strength;both stem puncture strength and stem crushing strength were significantly or extremely significantly positively correlated with the aboveground 3rd internode stem length,as well as stem diameter,dry weight,and dry weight per unit length of the aboveground 3rd to 5th internodes.Cluster analysis indicated that the maize inbred lines were divided into 4 clusters,among which cluster Ⅰ and cluster Ⅱ had high stem puncture strength and stem crushing strength.Principal component analysis showed that the cumulative contribution rates of the first two principal components in 2023 and the first three principal components in 2024 reached 82.51％and 84.57％,respectively.A total of 9 inbred lines(XM082,XM026,XM059,XM107,XM084,XF001,XM119,XM117,XM040)ranked in the top 20％of the 150 inbred lines in terms of comprehensive lodging resistance score in both 2023 and 2024,and their comprehensive lodging resistance scores were significantly higher than that of the control Zheng 58.Grey relational analysis demonstrated that the dry weight,dry weight per unit length and stem diameter of the aboveground 3rd to 5th internodes had relatively high relational degrees with the comprehensive lodging resistance score,which could be used as important indicators for the identification of maize lodging resistance.关键词
玉米/抗倒伏/茎秆性状/主成分分析/灰色关联度分析Key words
Maize/Lodging resistance/Stalk traits/Principal component analysis/Grey relational analysis分类
农业科技引用本文复制引用
史大坤,李方杰,卫晓轶,洪德峰,刘经纬,王稼苜,张雪海,魏锋..150份玉米自交系茎秆性状及抗倒能力综合评价[J].河南农业科学,2025,54(10):51-59,9.基金项目
国家现代农业产业技术体系项目(CARS-02-68) （CARS-02-68）
