The gossypol content of cotton Gossypium spp. has been of interest to plant breeders because those that have high levels often carry resistance to the tobacco budworm Heliothis virescens (F.). However, its presence in seed has economic disadvantages to the seed and oil processing industry. Previously, two alleles which control plant gossypol, GL 2 and GL 3, were successfully transferred from several sources to a common background, XG-15. GL 3 has now been transferred from G. raimondii (Ulbr.), a Peruvian wild diploid species, and G. davidsonii (Kell), a Mexican wild diploid species, into G. hirsutum (Upland) cottons. The plant bud tissue resulting from these crosses is relatively high in gossypol, while seed is relatively low. Keywords: Cotton; Gossypium spp.; plant gossypol; alleles
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McCarty et al. (1996) studied this question.
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