The pseudo bulb segments (0.5-1cm), were inocu- lated on BM medium (Mitra et al., 1976) with BAP(6- Benzyl amino urine; 1-10 mg/L), KN (Kinetin;1-10 mg/L) alone and in combination with NAA (- Naphthalene acetic acid; 1-10 mg/L). The pre-inocu- lation medium pH was adjusted at 5.6. In parallel set of experiments 0.2% activated charcoal (AC) was used in the medium. Sixteen replicates for each treatment and the experiments were repeated four times. All experimental manipulations were done under aseptic conditions and the cultures incubated at 25±2 oC under 12 hr photoperiod of 3500 lx light intensity, were regularly observed