Corm tissue produced either green or clear friable callus after
2–8 weeks in culture with all PGR combinations involving picloram
and TDZ under both dark and light conditions. Thus, for further
experimentation, the following PGR combinations were selected:
4mg/L TDZ+2mg/L picloram induced green friable callus after 8
weeks in culture (Fig. 2A)and1mg/LTDZ+2mg/Lpicloram induced
clear friable callus after 13 weeks in culture