RESUMO
OBJECTIVE: To study the condition of plant regeneration and clonal propagation system of Datura metel. METHODS: Stems and leaves of Datura metel were used as explants, effects of different hormones for callus induction and plant regeneration of leaves and clonal propagation system of stems were studied and optimized. RESULTS: The optimal way to obtain sterile explant for leaves were sterilized in 75% ethyl alcohol for 6 s then 0.1% HgCl2 for 6 min; Stems were sterilized in 75% ethyl alcohol for 8 s then 0.1% HgCl2 for 7 min. The optimal medium for callus of leaves was MS + 1.0 mg/L 6-BA + 0.1 mg/L NAA; The optimal medium for callus induction of clustered buds was MS + 2.0 mg/L 6-BA + 0.2 mg/L NAA; The optimal medium for clonal propagation system of stems was MS + 3.0 mg/L 6-BA + 0.05 mg/L NAA. The best medium for rooting induction was MS + 0.5 mg/L IBA. Transplant survival rate of plantlet was greater than 90% in humus soil-pearlite (5:1). CONCLUSION: The condition of plant regeneration and clonal propagation system of Datura metel is established.
