Identifying Heat Adaptability QTLs and Candidate Genes for Grain Appearance Quality at the Flowering Stage in Rice.

ABSTRACT: High temperature significantly impacts grain appearance quality, yet few studies have focused on identifying new quantitative trait loci (QTLs)/genes related to these traits under heat stress during the flowering stage in rice. In this study, a natural population of 525 rice accessions was used to identify QTLs and candidate genes associated with grain appearance quality using a Genome-Wide Association Study under heat stress. We identified 25 QTLs associated with grain length (GL), grain width (GW), and grain chalkiness (GC) under heat stress across 10 chromosomes in the three rice populations (full, indica, and japonica). Notably, three sets of overlapping QTLs were identified (set 1: qHTT-L3 and qHTT-XL3; set 2: qHTT-C5 and qHTT-XC5; set 3: qHTT-L11.1 and qHTT-GL11), located on chromoso

SUBMITTER: Chen L 

PROVIDER: S-EPMC11896946 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature