This study was conducted to establish the optimal condition for conservation of genetic resources and micropropagation of Lilium cernum. Induction of bulbet of L. cernum was highly effective (9.2 bulb/explant) on 1/2 SH (Schenk and Hildebrandt) medium supplemented with 1.0 mg/L TDZ (Thidiazuron) and 0.1 mg/L NAA (Naphthaleneacetic acid). The treatment of 0.1 mg/L NAA increased root development (6.4 root/explant) under the in vitro condition. In addition, treatments of AC (Activated Charcoal) and ventilation were enhanced to develop number of shoots and to elongate length of leaf, bulb and root. Futhermore, the process of short-term soil acclimatization was promoted to strengthen the plantlets induced under the in vitro condition.

This study was conducted to survey the habitat environment as draft data for restoration and massive propagation method of Forsythia saxatilis were classified as rare species and disappear in Seoul. The light, soil environment in habitat was surveyed and the cutting experiment as species, cutting periods, and rooting promoter was conducted to know physiological characteristic of Forsythia saxatilis The results, light was low to forest tree and soil in the native site indicated that pH 4.78～5.05, EC 0.04～0.05 dS․m-1, OM 1.23～3.27%, Ca 4.21 mg․kg-1, K 0.41mg․kg-1, Mg 0.69 mg․kg-1. 0.01 % N, 0.44mg․kg-1 P showed low and 12.87～23.56cmol+․kg-1 CEC. It was very poor soil environment to live plant as general forest soil. In Propagation, Rooting rate showed hardwood 90% and softwood 100% in summer and softwood 90% in summer and 79% in spring. Rooting rate was showed of each species, Forsythia viridissima 100%, Forsythia ovata Nakai. 80%, tetraploid 60%, and Forsythia saxatilis 90%. There is no effect of rooting promoter treatment. We gained 120 plants by cutting propagation and renaturated to habitat. It is the reason that Forsythia saxatilis disappear at habitat by have no seed and low adaptation of environmental change. To massive propagation by cutting, it is important to control cutting periods rather than rooting promoter treatment.