The effects of concentration of salts and sucrose and culture medium renewal frequency on cupuassu (Theobroma grandiflorum Schum.) embryonic axes development were studied. Two salts concentrations of MS (100 and 50%), two sucrose levels (1.5 and 3%) and three explants subcultives (without medium renewal, renewal at 30 and 60 days) were tested, with NAA (0.5 mg/L) and BAP (0.3 mg/L) in the MS medium. The use of MS at full concentration, with addition of 3% of sucrose, and renewals of the medium at 30 day intervals promoted better cupuassu embryonic axes development.
renewal; sucrose; NAA; BAP; salts concentration
