Denser Markers and Advanced Statistical Method Identified More Genetic Loci Associated with Husk Traits in Maize.

ABSTRACT: The husk-the leaf-like outer covering of maize ear-has multiple functions, including protecting the ear from diseases infection and dehydration. In previous studies, we genotyped an association panel of 508 inbred lines genotyped with a total of ~550,000 SNPs (Illumina 50 K SNP Chip and RNA-seq). Genome-Wide Association Studies (GWAS) were conducted on four husk traits: husk length (HL), husk layer number (HN), husk thickness (HT), and husk width (HW). Minimal associations were identified and none of them passed the P-value threshold after a Bonferroni multiple-test correction using a single locus test in framework of mixed linear model. In this study, we doubled the number of SNPs (~1,250,000 in total) by adding GBS and 600 K SNP Chip. GWAS, performed with the recently developed multiple

SUBMITTER: Cui Z 

PROVIDER: S-EPMC7235265 | biostudies-literature | 2020 May

REPOSITORIES: biostudies-literature