Phylogeny of the genus gossypium and genome origin

 

MATERIALS AND METHODS 

 

Plant materials 

 

A total of 87 accessions representing 35 species of Gossypium are available at the cotton 

germplasm bank of USDA/ARS, College Station, Texas. These species represent all 

genome groups of the Gossypium genus (Table 1). Included were five allopolyploid 

species, two A-genome diploid species, thirteen D-genome species, one F-genome 

species, two B-genome species, three E-genome species, two C-genome species, three 

G-genome species, and four K-genome species. Depending on availability of the seeds, 

from one to five accessions from each species were planted in the USDA/ARS green 

house at College Station, Texas, for seed production, and the identity of every accession 

was verified morphologically.