Genetic diversity, linkage disequilibrium, and association mapping analyses of Gossypium barbadense L. germplasm.

ABSTRACT: Limited polymorphism and narrow genetic base, due to genetic bottleneck through historic domestication, highlight a need for comprehensive characterization and utilization of existing genetic diversity in cotton germplasm collections. In this study, 288 worldwide Gossypium barbadense L. cotton germplasm accessions were evaluated in two diverse environments (Uzbekistan and USA). These accessions were assessed for genetic diversity, population structure, linkage disequilibrium (LD), and LD-based association mapping (AM) of fiber quality traits using 108 genome-wide simple sequence repeat (SSR) markers. Analyses revealed structured population characteristics and a high level of intra-variability (67.2%) and moderate interpopulation differentiation (32.8%). Eight percent and 4.3% of markers re

SUBMITTER: Abdullaev AA 

PROVIDER: S-EPMC5685624 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature