Korean Journal of Medicinal Crop Science (한국약용작물학회지)

The Korean Society of Medicinal Crop Science (한국약용작물학회)
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Growth and Abscisic Acid Changes of Creeping Thyme in the Exposure of NaCl and Drought

염 및 건조스트레스 하에서 포복형 백리향의 생육과 Abscisic Acid 농도변화

  • 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)
  • 김민제 (서울여자대학교 자연과학연구소) ;
  • 엄석현 (경희대학교 생명과학대학 원예생명공학과)
  • Published : 2009.10.30
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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

References

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