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Growth and Abscisic Acid Changes of Creeping Thyme in the Exposure of NaCl and Drought  

Kim, Min-Jea (Institute of Natural Sciences, Division of Environmental and Life Sciences, Seoul Women's University)
Eom, Seok-Hyun (Horticultural Biotechnology, College of Life Science, Kyung Hee University)
Publication Information
Korean Journal of Medicinal Crop Science / v.17, no.5, 2009 , pp. 328-334 More about this Journal
Abstract
Experimental purpose was to evaluate growth characteristic and abscisic acid (ABA) responses against salt/drought stresses. In the shoot biomass, creeping thyme was tolerated in mild NaCl stress, ranging 0 to 100 mM, while it was severely reduced in higher salinity. Under constant drought stress, the shoot biomass of creeping thyme showed a worse value compared to that of 100 mM NaCl treatment. Chlorophyll degradation was more severe in immature leaf than mature leaf under salt and drought stresses. In salt stress, immature leaf produced much amounts of ABA compared to mature leaf and also immature leaf showed faster increase of ABA than that of mature leaf. In drought stress, immature leaf responded to stress within 24 hours by the increase of ABA, while mature leaf responded to at 72 hours. Our results recommended that the optimal salinity level of creeping thyme was 50~100 mM NaCl.
Keywords
Abscisic Acid; Biomass; Chlorophyll content; Creeping Thyme; Salinity; Water Deficit;
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Times Cited By KSCI : 3  (Citation Analysis)
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