Genome-wide association studies identified candidate genes linked to grain yield and leaf characteristics in maize populations, suggesting genomic selection can enhance breeding outcomes.
Key Points
This research aims to elucidate the genetic basis of leaf-related traits in maize to assist breeding strategies.
Conducted genome-wide association studies (GWAS) on 291 maize inbred lines.
Phenotyped leaf traits at four environments, including leaf length, width, and area.
Identified significant SNPs and evaluated heritability of traits to apply genomic selection.
Identified 24 significant SNPs for leaf length with PVE up to 20.7%.
Found 34 significant SNPs for leaf width with PVE up to 17.2%.
Revealed 14 significant SNPs for leaf area with PVE up to 21.8%.
Detected 19 significant SNPs for leaf number above the upmost ear with PVE up to 25.01%.
Identified 122 candidate genes relevant to maize leaf traits.