While Ardisia crenata Sims. recently has been used increasingly as an ornamental plant, It is endangered in natural forest. The optimum treatments of the various concentrations priming agents to improve seed viability and germination of A. crenata (ornamental plant) were also estimated. Germinability was significantly when the seeds of A. crenata was soaked in PEG solution at 15oC for 4 days, the optimum treatment for improving germination of A. crenata was observed when the tested seeds was soaked in −0.5 MPa of PEG solution in 92%. Overall results would be useful means for propagation and production of A. crenata.

본 실험에서는 Ardisia속 자생식물의 온도 및 습도 변화에 따른 온열환경을 조사함으로써 자생식물의 이 용에 가능한 기초 자료를 제공하고자 실시하였다. 가로 2m, 세로 1.3m, 높이 1.8m, 총 부피가 4.68m3의 밀 폐된 유리 챔버 내에 온도 조건 변화에 따른 실내공 간의 온도 및 습도변화를 측정한 결과, Ardisia속 식 물에 의한 실내온도의 변화는 24oC 이상의 고온에서 는 식물이 없는 상태에 비해 감온 효과가 있었으며 3 종의 식물 간 큰 차이는 보이지 않았다. Ardisia속 식물 중에서 백량금이 온도 변화에 따른 습도 변화가 가장 민감하게 일어나 13%의 습도 변화를 보였고 57.3±3.1%로 비교적 높은 습도를 보였는데, 이에 비해 자금우는 8%, 산호수는 9%의 습도 변화를 보였고 자 금우와 산호수 모두 대부분의 낮 시간 동안 50~55% 의 실내 적정습도 범위를 유지했다. 식물체의 실내 발 열체로서의 열성능 평가 결과, 실내 온도를 28oC에서 26oC로 감온 시에는 식재에 의한 냉방 효과가 비식재 공간에 비해 7.5~13.6배 높았고, 적정온도 이상의 고 온에서는 자금우에 의한 냉방 효과가 백량금과 산호수 에 비해 더 좋았으며 적정온도를 유지하는데 효과적이 었다. 실내 저온 조건에서는 비식재 공간이 식물을 배 치한 경우보다 높은 열량을 나타내 식물이 저온 조건 에서 냉방효율을 낮추므로 적정온도를 유지하는데 효 과적이었다. 이로서 Ardisia속 식물은 고온의 실내에서 주위의 온도를 저하시키고 적정온도를 유지시키는데 효 과적임을 알 수 있었다.

We need to look into optimal light intensity of evergreen broad-leaved trees in order to ornamental value of plants growing indoors because different kinds of them have a difference of light intensity. This study was conducted to evaluate the shade tolerance with shading treatment by analyzing the growth and physiological responses of Sarcandra glabra (Thunb.) Nakai and Ardisia crenata Sims, which have been considered to have potentials to grow as indoor-cultivated ornamental trees. The shading treatments were regulated with shading rations of full sunlight, and 35%, 50%, 95% of full sunlight. As a result of surveying growth under different shading rations, H/D ratio and T/R ratio of S. glabrai and A. crenata under shading treatment were higher than full sunlight. The total leaf area (cm 2 ) of S. glabra was observed to increasing by 50% shading. A. crenata showed the highest at 95% shading. S. glabrai and A. crenata under 95% shading would lower the L＊a＊b value and turn a leaf color into dark green, and the chlorophyll content was significantly decreased. The leaf color of both of these trees were determined to have a sensitive reaction to light intensity. The photosynthetic capacity of S. glabra and A. crenata were respectively the greatest at 50% shading or 95% shading, and the light compensation point of both of these trees was the lowest at 50% and 95% shading. Although it was indicated that 50% shading is suitable for S. glabrai and A. crenata to grow healthy, they actively responded to low light intensity of 95% shading as well, confirming that they have shade tolerance. Therefore, the results of this study suggest that S. glabrai and A. crenataare appropriate as indoor ornamental tree.