GWAS of pod morphological and color characters in common bean

Abstract Background Common bean ( Phaseolus vulgaris L.) is an important legume species which can be consumed as immature pods and dry seeds after re-hydration cooking. Many genes QTL, epistatic interactions among them, condition pod morphological traits. However, not all them have been mapped or validated nor candidate proposed. We sought to investigate the genomic regions conditioning color characters through GWAS. Results Single multi-locus genome wide association analysis was used traits for a set of 301 lines Spanish Diversity Panel (SDP). The SDP genotyped with 32,812 SNPs obtained from Genotyping by Sequencing. panel grown in two seasons phenotypic data were recorded 17 fresh grouped four characters: length, cross-section, color, number per pod. In all, 23 QTL 6 18 9 associated more detected. Most located telomeric region chromosomes Pv01, Pv02, Pv04, Pv08, Pv09 Pv10. Eighteen detected co-localized 28 previously reported QTL. Twenty-one potential involving developmental processes underlying 11 characters, homologous A. thaliana FIS 2, SPL10 , TTG2 AML4 affecting silique size. Eight involved pigment synthesis, found five color. Conclusions GWAS revealed 62 16 underlain 25 genes. Overall 44 new identified existing contribute better understanding complex inheritance size common open opportunity future validation works.