New World tetraploid cottons contain Old World cytoplasm.

Polyploid formation created unique avenues for response to selection in Gossypium (cotton) (quantitative variationycotton fiber qualityycrop evolutionyintergenomic interactionsycomparative quantitative trait locus analysis)

A detailed restriction fragment length polymorphism map was used to determine the chromosomal locations and subgenomic distributions of quantitative trait loci (QTLs) segregating in a cross between cultivars of allotetraploid (AADD) Gossypium hirsutum (‘‘Upland’’ cotton) and Gossypium barbadense (‘‘Sea Island,’’ ‘‘Pima,’’ or ‘‘Egyptian’’ cotton) that differ markedly in the quality and quantity ...

Phylogeny, duplication, and intraspecific variation of Adh sequences in New World diploid cottons (Gossypium l., malvaceae).

The 13 "D-genome"cotton species are a monophyletic assemblage of morphologically diverse diploids that inhabit arid to semiarid regions in Mexico, with 1 disjunct species each in Peru and the Galapagos Islands and 1 species whose range extends northward into Arizona. While these species lack commercially significant fiber (i. e., cotton), they are important in that they represent one of the par...

Segregation in New Allopolyploids of Gossypium. II. Tetraploid Combinations.

N two other papers in this series (GERSTEL 1956; GERSTEL and PHILLIPS in prep.) I the segregation of artificial hexaploid combinations was described. These had been obtained by crossing tetraploid New World cottons with diploid Wild American species and subsequent doubling of the chromosome number. For certain characters these hexaploids were of duplex genotype (i.e. of the type ZZzz). Segregat...

The Diploid D Genome Cottons (Gossypium spp.) of the New World

Elucidation of Nuclear and Organellar Genomes of Gossypium hirsutum: Furthering Studies of Species Evolution and Applications for Crop Improvement

Plant genomes are larger and more complex than other eukaryotic organisms, due to small and large duplication events, recombination and subsequent reorganization of the genetic material. Commercially important cotton is the result of a polyploidization event between Old and New World cottons that occurred over one million years ago. Allotetraploid cotton has properties that are dramatically dif...