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Assessment of Salicylic Acid Impacts on Seedling Characteristic of Cucumber (Cucumis sativus L.) under Water Stress

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Author(s): Hossein MARDANI | Hassan BAYAT | Amir Hossein SAEIDNEJAD | Ehsan Eyshi REZAIE

Journal: Notulae Scientia Biologicae
ISSN 2067-3205

Volume: 4;
Issue: 1;
Start page: 112;
Date: 2012;
Original page

ABSTRACT
Impacts of various concentrations of salicylic acid (SA) on cucumber (Cucumis sativus L.) seedling characteristic were evaluated under different water stress levels by using a factorial arrangement based on completely randomized design with three replications at experimental greenhouse of Ferdowsi University of Mashhad, Iran. The studied factors included three water deficit levels (100% FC, 80% FC, and 60% FC) considered as first factor and five levels of SA concentrations (0, 0.25, 0.5, 0.75, and 1 mM) as second factor. Results showed that foliar application of SA at the highest concentration enhanced leaf area, leaf and dry weight while decreased stomatal conductance under high level of water deficit stress. Though, severe water deficit stress sharply raised the SPAD reading values. In general, exogenous SA application could develop cucumber seedling characteristic and improve water stress tolerance.
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