天津农业科学2026，Vol.32Issue(2)：6-12,7.DOI:10.3969/j.issn.1006-6500.2026.02.002
55份玉米种质资源表型多样性分析与优异种质筛选
Diversity Analysis of Phenotypic Traits and Selection of Superior Germplasm in 55 Maize Germplasm Resources
摘要
Abstract
To investigate the diversity of maize phenotypic traits and screen for superior germplasm resources,this study selected 55 local germplasm resources from multiple regions across China and analyzed 16 phenotypic traits.Genetic diversity indices,cluster analysis,and principal component analysis(PCA)were employed,complemented by a comprehensive evaluation score(F-value),to screen elite germplasm.The results showed that most maize germplasms exhibited a tapered ear shape,white cob color,dent kernel type,and yellow kernel color.Diversity analysis revealed that plant height exhibited the highest genetic diversity index(H′)among all measured traits,while ear diameter displayed the lowest.The diversity indices for crude fat,crude protein,and total starch content were similar.Significant or highly significant correlations were observed among multiple phenotypic traits.Specifically,ear diameter showed a highly significant positive correlation with thousand-grain weight,while plant height and growth period were significantly positively correlated with thousand-grain weight.The results of cluster analysis showed that the 55 germplasm resources could be divided into four groups.Ten germplasm accessions with desirable phenotypic traits were selected according to the comprehensive score.The results provide a reference for the innovative utilization and genetic breeding of maize germplasm resources.关键词
玉米/种质资源/表型性状/多样性分析Key words
maize/germplasm resources/phenotypic trait/diversity analysis分类
资源环境引用本文复制引用
赵鋆,张盼,李鑫,张莹莹,卢道文,董文恒..55份玉米种质资源表型多样性分析与优异种质筛选[J].天津农业科学,2026,32(2):6-12,7.基金项目
安阳市重点研发与推广专项(2023C01NY032) （2023C01NY032）
