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Genome-wide association studies (GWAS) scan thousands of genetic variants across many individuals to pinpoint which regions of the genome are linked to specific traits. In plant science, this approach allows researchers to identify the genes and variants underlying agriculturally important characteristics such as yield, disease resistance, and stress tolerance. By connecting natural genetic diversity to observable traits, GWAS accelerates breeding programs and deepens understanding of the genetic architecture behind complex plant phenotypes.
open_in_new WikipediaPubMed · 2026-07-09
Scientists identified two genes that control how corn plants branch and grow, confirming one gene increases tassel branching while another limits ear shank length. This work gives breeders precise genetic targets to engineer higher-yielding, better-shaped corn plants.
830 significant DNA markers were identified across four plant architecture traits in 206 maize inbred lines using over 1.19 million SNPs.
ZmARM5 positively regulates tassel branch number: corn plants with altered ZmARM5 activity showed measurable changes in how many tassel branches they produced.
ZmNRT1 negatively regulates ear shank length: suppressing or enhancing this gene shifted the length of the stalk segment connecting ear to main stem.
