Genomic relationships between wild and cultivated Brassica oleracea L. with emphasis on the origination of cultivated crops

Abstract

Wild taxa in Brassica oleracea L. play an important role to improve cultivated crops, but the genomic relationships between wild and cultivated forms have not been well clarified. An overall survey of genomic relationships among 39 accessions covering 10 wild and 7 cultivared types in B. oleracea was performed using amplified fragment length polymorphism and simple sequence repeat. The cultivated types were clustered together with B. oleracea ssp. oleracea,B. incana, B. bourgeaui, B. montana, B. cretica and B. hilarionis, while 4 wild taxa from Sicily, B. rupestris, B. insularis, B. macrocarpa and B. villosa formed the other group. It implies the low possibility that current B. oleracea crops originated in Sicily.