MATERIALS AND METHODS
Plant material: Shoot tips and auxiliary buds of Stemona
sp. were surface sterilized with 15% clorox solution for
20 min followed by three times washing with sterilized
distilled water. After sterilization, shoot tips and auxiliary
buds were cultured on MS (Murashige and Skoog, 1962)
agar medium supplemented with 3 mg/L benzyladenine
for multiple shoot induction. For root induction, single
shoots were transferred to half-MS medium supplemented
with 2 mg/L indolebutyric acid (Chaichana et al., 2011).
The cultures were placed in a growth room at 25±2ºC
under a 16 h per day photo period.