High-density genetic variation maps reveal the correlation between asymmetric interspecific introgressions and improvement of agronomic traits in Upland and Pima cotton varieties developed in Xinjiang, China.

ABSTRACT: The two new world tetraploid cottons, Gossypium hirsutum and Gossypium barbadense, are cultivated worldwide and are characterised by a high yield and superior fibre quality, respectively. Historical genetic introgression has been reported between them; however, the existence of introgression and its genetic effects on agronomic traits remain unclear with regard to independent breeding of G. hirsutum (Upland cotton) and G. barbadense (Pima cotton) elite cultivars. We collected 159 G. hirsutum and 70 G. barbadense cultivars developed in Xinjiang, China, along with 30 semi-wild accessions of G. hirsutum, to perform interspecific introgression tests, intraspecific selection analyses and genome-wide association studies (GWAS) with fibre quality and yield component traits in multiple environment

SUBMITTER: Nie X 

PROVIDER: S-EPMC7496985 | biostudies-literature | 2020 Jul

REPOSITORIES: biostudies-literature