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KMID : 1024520170260091081
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Journal of the Environmental Sciences
2017 Volume.26 No. 9 p.1081 ~ p.1086
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Growth Response in Hydroponic Cultured Dracaena braunii Grown under Various Chloride Ion Concentrations
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Son Hye-Mi
Park Ju-Young
Yoon Yong-Han
Ju Jin-Hee
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Abstract
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The present study was conducted for the purpose of analyzing the growth response of Dracaena braunii treated with chloride ions and to evaluate its salt tolerance. Distilled water (CON) was spiked with 1 (C1), 2 (C2), 5 (C5), 10 (C10) and 15 g/L (C15) CaCl2, respectively. Acidity (pH) and electrical conductivity of hydroponic solution, and leaf width, leaf length,
root length, number of leaves, fresh weight, dry weight and the water content of Dracaena braunii were measured. Acidity and electrical conductivity remarkably increased commensurate with increasing concentrations of CaCl2. Growth in the C1
treatment was better than that in CON, whereas the C10 or C15 treatments caused either slow growth or withering of the
plants. Fresh weight, dry weight and water content were significantly decreased in response to CaCl2 concentration, compared with those in the control. These results showed that CaCl2 concentration less than 1 g/L may be used as a hydroponic solution for D. braunii, as long as the water quality is not too saline. The chlorine ion has a negative effect on the growth.
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KEYWORD
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Chloride ion, Deicing salt, Hydroponic culture, Dracaena braunii, Plant growth, Salt tolerance
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