Some results of using introgressive form of cotton have fiber quality type II and III with geographically distant forms of high G.T.O. We studied the inheritance of fiber quality components in a  hybrids F1-F3. Involvement in the selection introgressive form obtained with the wild diploid species G.trilobum Skovsted and ruderal subspecies G.hirsutum L. ssp. yucatanense and G.hirsutum ssp. punctatum var. purpurascens (Poir.) Mauer allowed us to bring new hybrids of medium staple cotton to the rich genetic basis.