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Fiber Evolution

Introgression Populations
Homoeolog-specific Profiling
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Effects of Selection
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Stages in the domestication process

Wild Forms

There are about 39 species of Gossypium worldwide that are native to the tropics and warm temperate regions. Developmental profiles of the fibers of most wild species are similar, with fiber elongation terminating at about two weeks post-anthesis.

Early Cultigens

Early cultigens possess attributes that fall in between those of wild forms and modern varieties.


Landraces are locally used varieties of a crop developed by farmers for their own use. Two species found in Africa and Asia, Gossypium arboreum and G. herbaceum, come in naturally colored varieties.

Modern Varieties

The parallel domestication process involved four species, two from the Americas and two from Africa-Asia. Similar domestication processes in each case resulted in similar morphological transformations, including decreased plant stature and a dramatic increase in the abundance, length and quality of seed epidermal fiber.

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