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Effect of water stress on growth and antioxidative defence system in Cucumis spp. at seedling stage

Indian Agricultural Research Journals

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Title Effect of water stress on growth and antioxidative defence system in Cucumis spp. at seedling stage
 
Creator MUNDALIA, LALITA
JOSHI, UMA
RAMPURIA, SAKSHI
MEGHWAL, RAJURAM
KUMAR, SUSHIL
SHARMA, RAMAVTAR
 
Subject Cucumis, Drought, Hydrogen peroxide, Reactive oxygen species
 
Description Drought or moisture stress is one of the most significant environmental stresses causing huge loss to the agriculture worldwide, reducing average yield of major vegetables crop by more than 50%. In the current study, antioxidant responses under water stress were compared to detect water stress tolerant genotypes of Cucumis spp. Forty four genotypes of ten Cucumis spp. were evaluated for their respective drought tolerance and effect of water deficient on various morpho-physiological (root length, shoot length, root and shoot fresh and dry weight) and biochemical [Catalase, Ascorbate peroxidase (APOX) and Guiaicol peroxidase GPOX)] parameters. Of these 44 genotypes, 11.36% were tolerant, 29.54% were moderately tolerant and 38.63% were susceptible and 20.45% were highly susceptible. Decrease in root-shoot length, root-shoot fresh weight, root-shoot dry weight was observed in most of the genotypes. The activity of catalase and GPOX was increased in water deficit conditions while the activity of APOX decreased for most of the genotypes. Though none of the growth parameters and enzyme activity was correlated with tolerance level, various morpho-physiological and biochemical parameters, were associated under control and stress conditions.
 
Publisher The Indian Journal of Agricultural Sciences
 
Contributor —
 
Date 2015-05-13
 
Type info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Peer-reviewed Article
 
Format application/pdf
 
Identifier http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/48434
 
Source The Indian Journal of Agricultural Sciences; Vol 85, No 5 (2015)
0019-5022
 
Language eng
 
Relation http://epubs.icar.org.in/ejournal/index.php/IJAgS/article/view/48434/20782
 
Rights Copyright (c) 2015 The Indian Journal of Agricultural Sciences