biostudies-literatureWan WKey Research and Development Projects of Shaanxi ProvinceNational Key R&D Program of China18https://www.ebi.ac.uk/biostudies/studies/S-EPMC10248675biostudies-literatureUnknown43(3)As one of the three staple crops, nutritional traits in maize are important for human and animal nutrition. Grain quality-related traits are closely related to grain commercial value. Understanding the genetic basis of quality-related traits in maize would be helpful for breeding high-quality maize varieties. In this study, two association panels (AM122 and AM180) were subjected to genome-wide association analysis of grain quality-related traits, including protein content, oil content, starch content, and fiber content. In total, 98 SNPs (<i>P</i> < 1 × 10<sup>-4</sup>) were identified to be significantly associated with these four grain quality-related traits. By integrating two sets of public transcriptome data, 31 genes located in 200 kb regions flanking the associated SNP showed high eMolecular breeding : new strategies in plant improvementGenome-wide association analysis of kernel nutritional quality in two natural maize populations.PMC102486752018YFD01002002021ZDLNY01-062021LLRH-07Hu DLiang HQi XZhang XXu SYe FWan WXue JZhou HWu YWu XfalseGenome-wide association analysis of kernel nutritional quality in two natural maize populations.As one of the three staple crops, nutritional traits in maize are important for human and animal nutrition. Grain quality-related traits are closely related to grain commercial value. Understanding the genetic basis of quality-related traits in maize would be helpful for breeding high-quality maize varieties. In this study, two association panels (AM122 and AM180) were subjected to genome-wide association analysis of grain quality-related traits, including protein content, oil content, starch content, and fiber content. In total, 98 SNPs (<i>P</i> < 1 × 10<sup>-4</sup>) were identified to be significantly associated with these four grain quality-related traits. By integrating two sets of public transcriptome data, 31 genes located in 200 kb regions flanking the associated SNP showed high e2023-01-01T00:00:00Z2023 Mar2026-07-14T18:20:56.343Z2026-06-22T03:08:01.312ZS-EPMC102486753731330010.1007/s11032-023-01360-w