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2013 (Vol. 5, Issue: 01)
Article Information:

Protective Effect of Exogenous PGRs on Chlorophyll Fluorescence and Membrane Integrity of Rice Seedlings under Chilling Stress

Farhad Mohabbati, Farzad Paknejad, Saeed Vazan, Davood Habibi, Mohammad Reza Tookallo and Foad Moradi
Corresponding Author:  Farzad Paknejad 

Key words:  Low temperature, MDA, membrane integrity, phytohormone, , ,
Vol. 5 , (01): 146-153
Submitted Accepted Published
May 01, 2012 May 26, 2012 January 01, 2013
Abstract:

The effects of chilling stress on chlorophyll content, chlorophyll fluorescence and Malondialdehyde (MDA; a biomarker for lipid peroxidation in membrane) were evaluated in rice (Oryza sativa) seedlings during chilling stress and subsequent recovery phase using a phytotron. The effects of Indole-3-Acetic Acid (IAA), Abscisic Acid (ABA) and Kinetin (CK) exogenously foliar applied to three rice genotypes differing in cold tolerance were probed. Under chilling stress reduced levels of photo inhibition and MDA due to hormone application in relation to no hormone treatment demonstrated the significant effect of applied hormones to induce chilling tolerance in the genotypes. There were different effects of hormones on genotypes and even on organs (root and shoot) in the case of MDA content, moreover the strategy for cold tolerance differed among the genotypes.
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  Cite this Reference:
Farhad Mohabbati, Farzad Paknejad, Saeed Vazan, Davood Habibi, Mohammad Reza Tookallo and Foad Moradi, 2013. Protective Effect of Exogenous PGRs on Chlorophyll Fluorescence and Membrane Integrity of Rice Seedlings under Chilling Stress.  Research Journal of Applied Sciences, Engineering and Technology, 5(01): 146-153.
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ISSN (Online):  2040-7467
ISSN (Print):   2040-7459
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