Abstract
Abstract Leaf angle (LA) is a key determinant of maize plant architecture, affecting light capture, canopy efficiency, and yield in dense cropping systems. We assessed LA in 368 maize ( Zea mays L.) hybrids across six environments and performed genome‐wide association studies using 359,809 high‐quality single‐nucleotide polymorphisms (SNPs). This revealed 94 significant LA‐associated loci, including two co‐localized SNPs (rs_2_201960860 and rs_2_201960877) consistently identified across environments. Eight candidate genes were linked to this region, among which Zm00001d006212 displayed high leaf tissue expression. Haplotype analysis revealed that the LA values associated with Hap1, Hap2, and Hap3 of Zm00001d006212 were significantly lower than those associated with Hap4, further supporting its contribution to LA variation. A molecular marker was designed based on Zm00001d006212 sequence variants. This marker demonstrated that plants with the target band had significantly larger LA than those without. These findings offer new insights into the genetic regulation of LA and present molecular tools for optimizing maize plant architecture via marker‐assisted breeding.
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Claims 6
Claim · model-written summary
GWAS in maize hybrids revealed 94 significant leaf-angle-associated loci.
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e0“This revealed 94 significant LA‐associated loci”
Claim · model-written summary
Two co-localized SNPs (rs_2_201960860 and rs_2_201960877) were consistently identified across environments in maize leaf angle GWAS.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e0“including two co‐localized SNPs (rs_2_201960860 and rs_2_201960877) consistently identified across environments”
Claim · model-written summary
Eight candidate genes were linked to the region of the co-localized SNPs.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e0“Eight candidate genes were linked to this region”
Claim · model-written summary
Candidate gene Zm00001d006212 displayed high expression in leaf tissue.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e0“Zm00001d006212 displayed high leaf tissue expression”
Claim · model-written summary
Leaf angle values associated with haplotypes Hap1, Hap2 and Hap3 of Zm00001d006212 were significantly lower than those associated with Hap4.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e0“the LA values associated with Hap1, Hap2, and Hap3 of Zm00001d006212 were significantly lower than those associated with Hap4”
Claim · model-written summary
A molecular marker designed from Zm00001d006212 variants showed that plants with the target band had significantly larger leaf angle than plants without it.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“maize”
e0“plants with the target band had significantly larger LA than those without”