Abstract: | The effect of two culture media, potato-2 and N6 supplementedwith kinetin and either 2,4-dichlorophenoxyacetic acid (2,4-D)or -naphthalene acetic acid (NAA) on anther culture responseof two interspecific rice hybrids was studied. While calluscould be successfully induced and plants regenerated from theF1 of O. saliva x O. rufipogon, the other hybrid, O. salivax O. longistaminala did not respond to the anther culture. Nevertheless,some success in callus induction was achieved when anthers froma few selected F2 plants were cultured from the latter cross.No interaction effects between the media (potato-2, N6 and growthhormones (2,4-D and NAA) for anther response to callusing wereobserved. Potato-2 medium proved to be superior to N6 in termsof increased anther response, early callus induction, multiplecalli formation and also overall green plant regeneration Oryza saliva L., O. rufipogon Griff., O. longistaminata A. Chev. et Roehr, interspecific hybrid, anther culture, potato-2 medium, N6 medium |