Peach (Prunus persica L.) is a highly valuable crop species and is recognized by molecular researchers as a model fruit for the Rosaceae family. Using whole-genomesequencing data generated from 129peachaccessions, here we perform a comprehensivegenome-wideassociation studyfor12keyagronomic traits. We show that among the 10 qualitativetraitsinvestigated, nine exhibit consistent and more preciseassociationsignals than previously identified by linkage analysis. For two of the qualitativetraits, we describe candidate genes, one potentially involved in cell death and another predicted to encode an auxin-efflux carrier, that are highly associated with fruit shape and non-acidity, respectively. Furthermore, we find that several genomic regions harbouringassociationsignals for fruit weight and soluble solid content overlapped with predicted selective sweeps that occurred duringpeachdomestication and improvement. Our findings contribute to the large-scale characterization of genes controllingagronomic traitsinpeach.
Genome-wide association study of 12 agronomic traits in peach