Population structure and genetic differentiation associated with breeding history and selection in tomato (Solanum lycopersicum L.).

ABSTRACT: Tomato (Solanum lycopersicum L.) has undergone intensive selection during and following domestication. We investigated population structure and genetic differentiation within a collection of 70 tomato lines representing contemporary (processing and fresh-market) varieties, vintage varieties and landraces. The model-based Bayesian clustering software, STRUCTURE, was used to detect subpopulations. Six independent analyses were conducted using all marker data (173 markers) and five subsets of markers based on marker type (single-nucleotide polymorphisms, simple sequence repeats and insertion/deletions) and location (exon and intron sequences) within genes. All of these analyses consistently separated four groups predefined by market niche and age into distinct subpopulations. Furthermore, we

SUBMITTER: Sim SC 

PROVIDER: S-EPMC3186243 | biostudies-literature | 2011 Jun

REPOSITORIES: biostudies-literature