Insights into the genomic divergence of maize heterotic groups in China.

ABSTRACT: Diverse heterotic groups have been developed in China over several decades, but their genomic divergences have not been systematically studied after improvement. In this study, we performed Maize6H-60K array of 5,822 maize accessions and whole-genome re-sequencing of 150 inbred lines collected in China. Using multiple population structure analysis methods, we established a genetic boundary used to categorize heterotic groups and germplasm resources. We identified three chloroplast-cytoplasmic types that evolved during adaptation to diverse climatic environments in maize through phylogenetic and haplotype analyses. Comparative analyses revealed obvious genetic differences between heterotic groups and germplasm resources at both the chloroplast and nuclear genome levels, especially in the un

SUBMITTER: Xue Y 

PROVIDER: S-EPMC12131695 | biostudies-literature | 2025 Jun

REPOSITORIES: biostudies-literature