Adjustment of the process of micropropagation of Stryphnodendron adstringens (Mart.) Coville

The objective of the research was to determine a micropropagation protocol for the specie Stryphnodendron adstringens (Mart.) Coville. For shoot induction, nodal segments were inoculated in MS medium with different concentrations of kinetin (0, 1, 2, 3, 4 e 5mg L-1). For root induction, initially the shoots obtained 'in vitro' were transferred to MS containing 50% of salt concentration and with different concentrations of NAA (0, 1, 2, 3 e 4mg L-1). Lately, the shoots were moved to MS medium containing 50% of salt concentration, supplemented with activated charcoal. For acclimatization, the plants obtained were moved to plastic tubes containing different substrates and then covered with transparent plastic bags in order to maintain the environment humidity. The kinetin concentrations of 5.0 and 1.0mg L-1 were the most efficient for the induction of shots and buds, respectively. Shoot with a higher lengh were observed in MS medium supplemented with 1.0mg L-1 of kinetin. Roots in a higher number and length were observed in MS medium supplemented with 4.0mg L-1 of NAA. The substrates used had no significant effect on the rate of plant survival during the acclimatization stage.