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Effect of Exogenous Abscisic on Cell Membrane and Endogenous Hormone Contents in Leaves of Dendrobium nobile Under Low Temperature Stress(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2015年23
Page:
74-78
Research Field:
Publishing date:

Info

Title:
Effect of Exogenous Abscisic on Cell Membrane and Endogenous Hormone Contents in Leaves of Dendrobium nobile Under Low Temperature Stress
Author(s):
CHEN MinghuiZHANG ZhiluTONG WeishuangYANG Fengling
(Pingdingshan University/The Key Laboratory of Ecological Restoration in Low Mountain and Hilly Areas,Pingdingshan,Henan 467000)
Keywords:
low temperature stressabscisic acidDendrobium nobilecell membraneendogenous hormone
PACS:
-
DOI:
10.11937/bfyy.201523022
Abstract:
Low temperature is one of the main environmental factors which limit Dendrobium nobile growth,development and distribution.The effect of cell membrane permeability and the levels of endogenous hormones in leaves of D.nobile seeding were studied under cold stress and ABA treatment,in order to provide scientific evidence for the application of abscisic acid (ABA) in the production and cultivation of D.nobile.The results showed that low temperature treatment decreased the concentrations of GA3,IAA,ZR in leaves of D.nobile and injured the cell membrane,while the relative electric conductivity,the contents of ABA,JA,SA were increased under the low temperature stress.The exogenous ABA could reduce the membrane permeability and the contents of GA3,IAA,ZR in leaves,but the contents of ABA and SA were increased,reflecting the improvement of cold resistance of D.nobile seedling.The results clearly suggested that the foliar application of exogenous ABA could protect cell membrane permeability and adjust the different hormone levels against cold conditions.

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Last Update: 2016-01-14