Genetic architecture of ear traits based on association mapping and co-expression networks in maize inbred lines and hybrids.

ABSTRACT: Ear traits are key contributors to grain yield in maize; therefore, exploring their genetic basis facilitates the improvement of grain yield. However, the underlying molecular mechanisms of ear traits remain obscure in both inbred lines and hybrids. Here, two association panels, respectively, comprising 203 inbred lines (IP) and 246 F₁ hybrids (HP) were employed to identify candidate genes for six ear traits. The IP showed higher phenotypic variation and lower phenotypic mean than the HP for all traits, except ear tip-barrenness length. By conducting a genome-wide association study (GWAS) across multiple environments, 101 and 228 significant single-nucleotide polymorphisms (SNPs) associated with six ear traits were identified in the IP and HP, respectively. Of these significant

SUBMITTER: Li T 

PROVIDER: S-EPMC10624778 | biostudies-literature | 2023 Nov

REPOSITORIES: biostudies-literature