145份玉米自交系茎秆抗倒伏能力的综合评价  

Comprehensive Evaluation of Stem Lodging Resistance of 145 Maize Inbred Lines

作　　者：张凤启[1] 张君[1] 马智艳 武晓攀 周庆伟 穆心愿 唐保军[1] 李欣 夏来坤[1] 丁勇[1] ZHANG Fengqi;ZHANG Jun;MA Zhiyan;WU Xiaopan;ZHOU Qingwei;MU Xinyuan;TANG Baojun;LI Xin;XIA Laikun;DING Yong(Cereal Institute,Henan Academy of Agricultural Sciences/Henan Provincial Key Laboratory of Maize Biology,Zhengzhou 450002,China;Zhengzhou Beiqing Seed Industry Co.,Ltd.,Zhengzhou 450002,China;Henan Sutai Agricultural Technology Co.,Ltd.,Zhengzhou 450040,China;Wuzhi County Rural Agriculture Bureau of Henan,Wuzhi 454950,China)

机构地区：[1]河南省农业科学院粮食作物研究所/河南省玉米生物学重点实验室,河南郑州450002 [2]郑州北青种业有限公司,河南郑州450002 [3]河南苏泰农业科技有限公司,河南郑州450040 [4]河南省武陟县农业农村局,河南武陟454950

出　　处：《河南农业科学》2024年第11期34-40,共7页Journal of Henan Agricultural Sciences

基　　金：国家重点研发计划项目(2021YFD1200700);河南省科技攻关项目(242102110229);河南省农业科学院自主创新项目(2024ZC011);河南省玉米产业技术体系建设项目(HARS-22-02-G2);河南省农业科学院科技创新团队项目(2024TD40)。

摘　　要：以国内外的145份玉米自交系为材料,在多个环境下调查株高、穗位高、茎秆穿刺强度、节间长度和节间直径等茎秆抗倒伏相关指标,通过相关性分析、主成分分析、聚类分析等筛选抗倒伏能力强的玉米自交系,为玉米抗倒伏育种提供优异种质资源。结果表明,株高、穗位高、茎秆穿刺强度、节间直径和节间长度在不同自交系间差异极显著;株高遗传力最高,为0.99,其次为穗位高、茎秆穿刺强度,均为0.97。相关性分析结果表明,茎秆穿刺强度与株高呈极显著正相关。主成分分析结果表明,前3个主成分代表了145份玉米自交系5个性状77.02%的信息,其贡献率分别为37.08%、21.94%、18.00%。玉米自交系抗倒伏能力综合评价和聚类分析结果表明,145份自交系划分为六大类群,筛选出S268、S112、S135、S270等13份抗倒伏能力强的自交系。The plant height(PH),ear height(EH),stem rind penetrometer resistance(RPR),internode diameter(ID)and internode length(IL)were investigated under multiple environments with 145 maize inbred lines from home and abroad as materials.The excellent inbred lines with strong stem lodging resistance were screened out through correlation analysis,principal component analysis and cluster analysis,so as to provide excellent germplasm resources for maize lodging resistance breeding.The results indicated that PH,EH,RPR,ID and IL were extremely significantly different among different maize inbred lines.The heritability of PH with 0.99 was the highest,followed by EH and RPR all with 0.97.The correlation analysis results showed that RPR was extremely significantly positively correlated with PH.The principal component analysis results showed that the first three principal components represented 77.02%of the information of the five traits of 145 maize inbred lines,and their contribution rates were 37.08%,21.94%and 18.00%,respectively.Based on the comprehensive evaluation and cluster analysis of lodging resistance of each inbred line,145 inbred lines were divided into 6 groups,13 inbred lines with strong lodging resistance,such as S268,S112,S135,S270,etc,were screened out.

关 键 词：玉米自交系 抗倒伏 茎秆穿刺强度 主成分分析 聚类分析 

分 类 号：S513[农业科学—作物学]