This research aims to determine the interaction effect of NAA and BAP, NAA factor, and BAP factor, and to obtain the best treatments on the growth of Siamese orange cotyledonary node explants on MS media. This research was conducted experimentally using factorial randomized block design with two factors: NAA (0; 0,25; 0,50; and 0,75 mg.l-1) and BAP (1, 2, 3, and 4 mg.l-1). Parameters observed w…