玉米自交系籽粒性状与蛋白质含量的变异分析

Analysis of Kernel-Related Traits and Protein Content of Maize Inbred Lines

吕丹 ¹郑冉 ¹童博 ¹张奥妮 ¹罗红兵 ²邓敏¹

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作者信息

1. 湖南农业大学农学院,长沙 410128
2. 湖南农业大学农学院,长沙 410128;湖南省玉米工程技术研究中心,长沙 410128
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摘要

为了评价玉米自交系籽粒性状和总蛋白质含量的遗传变异,筛选优异玉米自交系材料.本研究对298份玉米自交系籽粒的粒长、粒宽、粒厚、百粒重和总蛋白质质量分数等性状进行了变异性分析、相关性分析及聚类分析,同时对不同亚群玉米自交系的籽粒性状和总蛋白质质量分数进行方差分析.结果表明,玉米自交系籽粒总蛋白质质量分数介于3.04％～14.10％之间,均值为9.03％,各性状的变异系数范围为9.13％～26.05％.籽粒总蛋白质质量分数与总淀粉质量分数、直链淀粉质量分数和粒长均呈极其显著负相关,与百粒重呈显著负相关,与可溶性总糖质量分数呈极其显著正相关,与粗脂肪质量分数呈极显著正相关,与还原糖质量分数呈显著正相关.不同亚群玉米自交系的总蛋白质质量分数和粒长存在显著性差异.聚类分析将298份玉米自交系分成6个类群,其中第Ⅳ类群的5个玉米自交系(CIMBL156、CIMBL83、HSBN、S37和CIMBL120)表现出总蛋白质质量分数高且籽粒性状优异的特点.

Abstract

To evaluate the genetic variation of kernel-related traits and total protein content in maize inbred lines,excellent maize inbred lines were screened.The variation analysis,correlation analysis and cluster analysis of kernel-related traits and total protein content were carried out using 298 maize inbred lines.The results indicated that total protein content varied from 3.04％to 14.10％,with an average of 9.03％,the coefficient variation of total protein content and kernel-related traits ranged from 9.13％to 26.05％.Total protein content was significantly negatively correlated with total starch content,amylose content,kernel length and 100-kernel weight,and it was significantly positively correlated with total soluble sugar,crude fat and reducing sugar.There were significant differ-ences in total protein content and kernel length among different subgroups.The 298 maize inbred lines were divided into six groups by cluster analysis.Group Ⅳ containing 5 maize inbred lines(CIMBL156,CIMBL83,HSBN,S37 and CIMBL120)had better performance in total protein content and kernel-related traits.

关键词

玉米/籽粒性状/总蛋白质质量分数/变异分析/聚类分析

Key words

maize/kernel traits/total protein content/variation analysis/cluster analysis

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基金项目

国家自然科学基金项目(32101700)

湖南省研究生科研创新项目(CX20230697)

出版年

2024

中国粮油学报

中国粮油学会

中国粮油学报

CSTPCD北大核心

影响因子：1.056

ISSN：1003-0174

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