Biomedical and Biological Engineering | Article | Published 2013

Genetic diversity and population structure of cotton (Gossypium spp.) of the New World assessed by SSR markers

Authors:

Claudia Perez-M

James McD Stewart

Mauricio Ulloa

Richard Percy

Publisher: NRC Research Press
Collection: Botany
Keywords: Genomics and bioinformatics

Abstract

A global analysis of cotton (Gossypium spp.) genetic diversity is the first step to understanding its geographical distribution, dissemination, genetic relatedness, and population structure. To assess the genetic diversity and population structure in Gossypium species, 111 cotton accessions representing five allotetraploids (AD1–AD5 genomes), 23 Asiatic diploids of the Old World (A1 and A2 genomes), and 82 diploids of the New World subgenus Houzingenia (D1–D11 genomes) species were assessed using simple sequence repeats (SSR) markers with wide genome coverage. The mean genetic distance (GD) between the two most important New World tetraploid cottons (Upland (Gossypium hirsutum L.) and Pima (Gossypium barbadense L.)) was 0.39. Among the three shrub type sections (Houzingenia, Integrifolia, and Caducibracteolata) and three arborescent sections (Erioxylum, Selera, and Austroamericana …

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