Genetic structure and linkage disequilibrium in a diverse, representative collection of the C4 model plant, Sorghum bicolor.

ABSTRACT: To facilitate the mapping of genes in sorghum [Sorghum bicolor (L.) Moench] underlying economically important traits, we analyzed the genetic structure and linkage disequilibrium in a sorghum mini core collection of 242 landraces with 13,390 single-nucleotide polymorphims. The single-nucleotide polymorphisms were produced using a highly multiplexed genotyping-by-sequencing methodology. Genetic structure was established using principal component, Neighbor-Joining phylogenetic, and Bayesian cluster analyses. These analyses indicated that the mini-core collection was structured along both geographic origin and sorghum race classification. Examples of the former were accessions from Southern Africa, East Asia, and Yemen. Examples of the latter were caudatums with widespread geographical distri

SUBMITTER: Wang YH 

PROVIDER: S-EPMC3656726 | biostudies-literature | 2013 May

REPOSITORIES: biostudies-literature