In an attempt to determine the transmission of androgenetic competence, 10 families resulting from intraand interspecific hybrids including three reciprocal hybrids were examined in anther culture . Hybrid families were generated between competent clones of Solanum phureja and incompetent clones of S . phureja, S. microdontum and S. berthaultii . S . phureja clones PP5 and A95 (derived by androgenesis of a 2n microspore of PP5) were found to be consistently competent for androgenesis . Androgenetic competence was observed to segregate in all hybrid families with some highly responsive and some unresponsive genotypes in all families . A total of 9,465 cultured anthers have yielded 936 embryoids and 91 plants, including 29 monoploids . The cytoplasm of species lacking competence appeared to have greater influence on the expression of andrdgenesis in intraspecific than in interspecific hybrids . Expression of androgenesis varied among half-sib hybrid families indicating that competence for androgenesis was influenced by the parents lacking competence . The anther culture data on a backcross between a highly responsive hybrid and its unresponsive parent indicated that competence may be under control of a single dominant gene .