Chloroplast DNA Analyses of Diploid and Tetraploid Species and Races

O.W. Altman and M.D. Thomas


 
ABSTRACT

Taxonomic classification of the species of Gossypium has varied considerably. Most current lists of the genus show 38 or 39 species within eight genomic groups (19, 1, 10). One of these genomic groups consists of the allotetraploids (AD), including the two main cultivated species, G. hirsutum and G. barbadense. The wild AD species should be prime candidates for exotic germplasm to genetically enhance the cultivated cottons. However, the AD genomic group has been one of the most variable for taxonomic classification, and other unresolved evolutionary questions concerning their origin impinge on efficient utilization of the wild allotetraploids as well as diploid genomes.



Reprinted from 1985 Proceedings: Beltwide Cotton Production Research Conferences pp. 47 - 50
©National Cotton Council, Memphis TN

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Document last modified Sunday, Dec 6 1998