中国农业科技导报2024，Vol.26Issue(8)：20-33,14.DOI:10.13304/j.nykjdb.2023.0801
基于10K SNP芯片分析255份玉米种质资源的遗传多样性
Genetic Diversity Analysis of 255 Maize Germplasm Resources Based on 10K SNP Chip
摘要
Abstract
Maize(Zea mays L.)is one of the world's top three food crops and an important feed crop.Analyzing the agronomic phenotypic traits and genotypic genetic diversity of maize germplasm resources has important guiding significance for crop breeding and production.A natural population composed of 255 germplasm resources was used as the research material,and the genotyping was obtained by whole genome scanning using 10K SNP liquid chip.Phenotypic clustering and genetic diversity analysis were performed using VCF2PCA cluster and Mega11 software.The results showed that 14 139 high quality SNP sites were detected,which were distributed on 10 chromosomes of maize.The polymorphisms ranged from 0.05 to 0.50,with an average of 0.29.Polymorphism information content(PIC)varied from 0.04 to 0.38 with an average of 0.24.104 SNPs with allele frequency difference were more than 0.30 between tropical and temperate populations.Through population genetic structure analysis,principal component analysis and cluster analysis,255 samples were mainly divided into temperate and tropical subgroups.These results identified the genetic diversity and relationships among 255 germplasm resources from temperate and tropical maize,laying the foundation for subsequent maize germplasm improvement and innovation.关键词
玉米/10K SNP/种质资源/遗传多样性Key words
Zea mays L./10K SNP/germplasm resources/genetic diversity analysis分类
农业科技引用本文复制引用
高山,闫晓翠,王楠,张梦洁,李友鹏,刁文达,段会军..基于10K SNP芯片分析255份玉米种质资源的遗传多样性[J].中国农业科技导报,2024,26(8):20-33,14.基金项目
河北省重点研发计划项目(21326328D) （21326328D）
河北省现代农业产业技术体系建设项目(HBCT2023020207) （HBCT2023020207）
河北省特色专业玉米新品种选育基金项目(21326319D-16). （21326319D-16）
