不同来源玉米自交系籽粒品质性状及其相关分析  

Grain Quality Traits and Their Correlations of Maize Inbred Lines with Different Resources

作　　者：张岚 胡春辉 张龙 李鑫宇 朱赛岚 刘真真 高洁 张桂芳 李玉玲 Zhang Lan;Hu Chunhui;Zhang Long;Li Xinyu;Zhu Sailan;Liu Zhenzhen;Gao Jie;Zhang Guifang;Li Yuling(Agronomy College of Henan Agricultural University~Collaborative Innovation Center of Henan Grain Crops~National Key Laboratory of Wheat and Maize Crop Science, Zhengzhou 450004)

机构地区：[1]河南农业大学农学院/河南粮食作物协同创新中心/小麦玉米作物学国家重点实验室,郑州450046

出　　处：《中国农学通报》2018年第12期23-29,共7页Chinese Agricultural Science Bulletin

基　　金：河南省现代农业产业技术体系"玉米遗传育种岗位专家"(S2010-02-G01);国家自然科学基金"玉米粒重主效qGW1.04的图位克隆及功能解析"(31771812)

摘　　要：为提供玉米育种品质改良的依据,研究了不同来源的211份玉米自交系籽粒品质性状间的差异及相关性。采用近红外光谱分析仪测定籽粒粗蛋白、粗脂肪、粗淀粉、赖氨酸含量4个籽粒品质性状,并在系统聚类分析的基础上进行了类群间各性状变异分析。结果表明,各性状不同自交系间、年份间、地点间、年份×自交系、自交系×年份×地点均存在显著或极显著差异;不同自交系间粗蛋白、粗脂肪和赖氨酸的含量存在明显差异,赖氨酸含量变异系数最大(22.77%),粗淀粉含量变异系数相对较小(1.89%);各品质间的相关性分析显示粗脂肪和粗蛋白、赖氨酸和粗蛋白、赖氨酸和粗脂肪含量间呈显著正相关,粗淀粉和粗蛋白、粗脂肪、赖氨酸含量间呈负相关;供试自交系可分为9类,其中类群G1~G5包含205个自交系,占97.16%,品质性状优良的自交系以类群G1、G2、G4和G5最多,与‘郑单958’和‘先玉335’两大杂交种的4个亲本自交系比较,本研究共选出32份籽粒品质优良自交系,为玉米自交系籽粒品质性状的改良提供参考。To provide a basis of quality improvement for maize breeding, the differences and correlations ofquality traits of 211 maize inbred lines with different resources are studied. The contents of crude protein,crude fat, crude starch and lysine are measured by near-infrared spectrum analyzer, and the variation analysisof different groups is conducted based on hierarchical cluster analysis. The results showed that there weresignificant or extremely significant differences between different inbred lines, years, locations, years ×inbredlines, inbred lines×years×locations. The contents of crude protein, crude fat and lysine among different inbredlines were also different, the variation coefficient of lysine content was the highest（22.77%）, and the variationcoefficient of crude starch content was the lowest（1.89%）. Correlation analysis showed that there was asignificantly positive correlation between crude fat and crude protein, lysine and crude protein, and lysine andcrude fat. However, crude starch and crude protein, crude fat, lysine was negatively correlated, respectively.The clustering analysis showed that the 211 maize inbred lines were divided into 9 groups, for which G1-G5 contained 205 inbred lines（accounting for 97.16%）, and there was a great number of inbred lines withexcellent quality traits in groups G1, G2, G4 and G5. Compared with the 4 parental inbred lines from two major hybrids,‘Zhengdan 958＇and‘Xianyu 335＇, 32 maize elite inbred lines for grain quality were selected. Theseresults could provide a reference for improving the quality traits of maize inbred lines.

关 键 词：玉米 籽粒品质 自交系 相关分析 类群 

分 类 号：S513[农业科学—作物学]