| 초록 |
Three species of Ardisia grow in wet areas under ever green forest along the coastal and island regions. A. pusilla is distributed mostly in Islands of Chejudo. Sohuksando and Wando. A. crenata in Islands of Chejudo, Hongdo, Kumondo, and Huksando of the southern coastal region. A. japonica were surveyed in the Island of Ullnungdo, Kanghwado. The natural habitat for A. japonica was extended to a northern areas as compared to other two species. The most +significant environmental factor determining the distribution of genus Ardisia in Korea is a low temperature in January. A. japonica is usually found in the region where mean and low January temperature, respectively, is -1.9℃ and - 12.1℃, A. crenata in 0.4℃ and -4.7℃, and A. pusilla in 4.5℃ and -3.6℃. A. japonica shows a good growth under the light intensity of 2.2 - 62.0㎛ol . m-2. S-l, and A. crenata together with A. pusilla under 27.8 82.6 pmol' m-2. S'l, indicating that all three species of Ardisia required a low light intensity for optimum growth. Cuttings of both A. japonica and A. pusilla rooted well when propagated in rooting medium composed of vermiculite. while A. crenata did so with a medium composed of vermiculite plus peatmoss. The number of roots per cutting was significantly increased by 2,000 mg/L IBA with A. japonica and by with 200 mg/L NAA with A. pusilla, The number of leaves, flower buds. leaf area, and leaf size was increased when plants were grown under 35% shade. Chlorophyll content. number of leaves. leaf width, size and area of A. crenata were increased when grown under 55% shade. Thus the response to low light level suggested that genus Ardisia can be produced for indoor landscape plants. |
