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Jungae Baik,Yu Kyung Nam,Chun Ho Pak 한국원예학회 2005 Horticulture, Environment, and Biotechnology Vol.46 No.3
Epiprenum aureum which was not irrigated for 3 and 7 days showed visual injuries in hydroculture as well as in soil culture. However, the plants were more sensitive to water deficit in hydroculture than in soil culture. The fresh/dry weight ratio and water content of leaves and roots were significantly reduced with increasing periods of the drought stress. Uniconazole treatment at 50 and 100 ㎎ㆍL?¹ increased the survival rate at the 3 days of the drought stress compared to the control by 13.2% in hydroculture and 17.3% in soil culture and by 1.6% in hydro culture and 13.1% in soil culture, respectively. However, no plants were survived with 200 ㎎ㆍL?¹ uniconazole. The uniconazole treat-ment at 50 and 100 ㎎ㆍL?¹ retarded the electrolyte leakage from the leaves and delayed membrane deterioration. In addition, the uniconazole treatment increased the root activity, chlorophyll contents, and drought tolerance of E. aureum.