Candidate genomic regions underlying capsule shattering in sesame revealed by multi-model GWAS and field-based phenotyping.

ABSTRACT: Capsule shattering in sesame is a major agronomic constraint that reduces yield stability and limits mechanized harvesting efficiency. To address this challenge, 200 genetically diverse sesame genotypes from Sudan were genotyped using genotyping-by-sequencing (GBS) and evaluated for three consecutive seasons under field conditions for shattering type (ST), type of capsule beak (TCB), and bicarpellate capsule shape (BS). The resulting phenotypic and genotypic data were integrated into a multi-model genome-wide association study (GWAS) framework (BLINK, FarmCPU, and MLMM) to elucidate the genetic architecture of capsule-shattering traits. Two marker-trait associations (MTAs) were consistently identified across the GWAS models, comprising Chr1_19419575 associated with the TCB and Chr2_1564933

SUBMITTER: Elsafy M 

PROVIDER: S-EPMC12816078 | biostudies-literature | 2026 Jan

REPOSITORIES: biostudies-literature