ArticleFrontiers in plant science2026
Genetic architecture of seedling stage chilling tolerance in United States rice germplasm.
Article in Frontiers in plant science, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Chilling stress during the seedling stage severely limits rice growth and development, highlighting the need for a deeper understanding of the genetic architecture underlying chilling stress tolerance. In this study, a rice association panel was evaluated for seedling vigor traits under growth-chamber conditions (Experiment 1) and under natural chilling conditions (Experiment 2). Nine stress tolerance indices (STIs) were calculated from Experiment 1 for the seedling traits. Genome-wide association studies (GWAS) were conducted using 872,995 high-density single-nucleotide polymorphisms (SNPs) and four models, including two single-locus (GLM and MLM) and two multi-locus (FarmCPU and BLINK) models. A total of 54 quantitative trait loci (QTLs) associated with seedling morphological traits were identified, with phenotypic variance explained (PVE) ranging from 5.3 to 82.2%. Twenty-eight QTLs were co-localized with previously reported loci, confirming the reliability of the associations, while one novel QTL,
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