Abstract:The experiment result indicated that: 1. Multi-Effect Triazole (MET) is a kind of plant growth retardin. It inhibited the callus induction from immature embryo obviously and promoted the callus differentiation and green plantlet formation, especialy in lower concentration MET (2mg/l); 2. MET inhibited the plant height obviously and promoted the development of plantlet root system; 3. The survival rate of the hardening plantlets, which later grow morevigorously, was about 95%.