Transcriptome- and proteome-wide association of a recombinant inbred line population revealed twelve core QTLs for four fruit traits in pepper (Capsicum annuum L.)

Dear Editor, Pepper(C.annuum L.)is an important vegetable crop worldwide[1],with remarkable diversity in morphology,nutrition,color,flavor,and yield.A great effort has been made to identify quantitative trait loci(QTLs)and genes that affect these traits[2,3].However,few effective com-binatorial events in small population sizes have lim-ited the mapping of high-confidence QTLs for marker-assisted breeding(MAB)and map-based gene cloning.The combined multi-omics approach has provided pow-erful tools for the rapid mining of candidate genes for MAB and for improving our understanding of candidate genes and their molecular regulation[4,5].