Genomic diversity and novel genome-wide association with fruit morphology in Capsicum, from 746k polymorphic sites.

ABSTRACT: Capsicum is one of the major vegetable crops grown worldwide. Current subdivision in clades and species is based on morphological traits and coarse sets of genetic markers. Broad variability of fruits has been driven by breeding programs and has been mainly studied by linkage analysis. We discovered 746k variable sites by sequencing 1.8% of the genome in a collection of 373 accessions belonging to 11 Capsicum species from 51 countries. We describe genomic variation at population-level, confirm major subdivision in clades and species, and show that the known major subdivision of C. annuum separates large and bulky fruits from small ones. In C. annuum, we identify four novel loci associated with phenotypes determining the fruit shape, including a non-synonymous mutation in the gene Longifoli

SUBMITTER: Colonna V 

PROVIDER: S-EPMC6624249 | biostudies-literature | 2019 Jul

REPOSITORIES: biostudies-literature