Genome-wide Diversity and Association Mapping for Capsaicinoids and Fruit Weight in Capsicum annuum L.

ABSTRACT: Accumulated capsaicinoid content and increased fruit size are traits resulting from Capsicum annuum domestication. In this study, we used a diverse collection of C. annuum to generate 66,960 SNPs using genotyping by sequencing. The study identified 1189 haplotypes containing 3413 SNPs. Length of individual linkage disequilibrium (LD) blocks varied along chromosomes, with regions of high and low LD interspersed with an average LD of 139 kb. Principal component analysis (PCA), Bayesian model based population structure analysis and an Euclidean tree built based on identity by state (IBS) indices revealed that the clustering pattern of diverse accessions are in agreement with capsaicin content (CA) and fruit weight (FW) classifications indicating the importance of these traits in shaping moder

SUBMITTER: Nimmakayala P 

PROVIDER: S-EPMC5128918 | biostudies-literature | 2016 Nov

REPOSITORIES: biostudies-literature