sterilized explants were cultured in light on two basic media, MS or WPM, containing different concentrations of BA (2.2, 4.4 μM), NAA (0.054, 0.27, 0.54 μM) and GA3 (2.0 μM). The media were supplemented with sucrose (30 g l-1). The explants were cultured at light density 40 μmol m-2 s-1 ( cool-white fluorescent lamps) for 3–4 weeks