In order to determine the short-term impact induced by chloride ionic, CaCl2 was used to study the chloride ionic effects of salinity on substrate and growth of Dracacena braunii grown in ornamental hydro-culture. A distilled water (control) was enriched with 10, 20, 50, 100, and 150 g･L -1 of CaCl2, respectively. Before planting, acidity and electronic conductivity values remarkably increased with increasing concentration of CaCl2. However, 4 weeks after planting, acidity values decreased to a slightly acidic pH, while there were not significant differences among electronic conductivity values obtained. Number of root, fresh weight, and total chlorophyll content were significantly decreased in response to CaCl2 concentration in comparison with control, whereas dry weight, water content, and color of stem were no significant effect of CaCl2 concentration less than 20 g･L -1 . These results showed that initial CaCl2 concentrations above 20 g･L -1 is considered to be the threshold value that will sustain the Dracacena braunii in the growth condition and above which plant growth will be retarded.

• Yong Han Yoon(Department of Green Technology Convergence, College of Science Technology, Konkuk University, Chungju 27478, South Korea) Corresponding author
• Hye Mi Son(Department of Green Technology Convergence, Graduate School of Natural Science, Konkuk University, Chungju 27478, South Korea)
• Jin Hee Ju(Department of Green Technology Convergence, College of Science Technology, Konkuk University, Chungju 27478, South Korea)