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3 2015, 1(1): 1-16 Back to browse issues page
Effects of Water Stress on Some Compatible Solutes and Membrane Stability in Two Species of Sainfoin (Onobrychis radiata and Onobrychis viciifolia)
Parvin Ramak *, Mohammad Mehrnia, Sedigheh Esmaeilzadeh Bahabadi
Lorestan Agricultural Research and Natural Resources Center, Khorramabad, Iran
Abstract:   (10924 Views)

The effects of water stress on some compatible solutes including proline, soluble sugars and glycine betaine, the level of lipid peroxidation and membrane stability in two species of Sainfoin (Onobrychis radiate (Desf.) M.Bieb. and Onobrychis viciifolia Scop.) were investigated. The experimental plan was a basic factorial design, completely random with four replications and water stress was applied based on irrigation at 50, 60, 70 and 100% of Field Capacity (FC). Different physiological responses were observed between the species in their response to water stress. Our results showed that O. radiata possessed greater increments in soluble sugars content and glycine betaine than O. viciifolia. The Relative Water Content (RWC) in O. viciifolia was significantly lower comparing with O. radiate. The Relative Water Loss (RWL) of O. viciifolia had significantly decreased compared to control plants in all treatments and O. viciifolia was not able to withstand the 50% soil field capacity and dried out. Lipid peroxidation in O. radiata was lower than O. viciifolia and membrane of leaf cells in O. radiata was more oxidatively stable compared to O. viciifolia.

Keywords: Compatible solutes, Lipid peroxidation, Membrane stability, Onobrychis, Water stress
     
Type of Study: Research | Subject: Special
Received: 2015/05/13 | Accepted: 2015/08/11 | Published: 2015/08/23
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Ramak P, Mehrnia M, Esmaeilzadeh Bahabadi S. Effects of Water Stress on Some Compatible Solutes and Membrane Stability in Two Species of Sainfoin (Onobrychis radiata and Onobrychis viciifolia). 3. 2015; 1 (1) :1-16
URL: http://ijppb.lu.ac.ir/article-1-34-en.html


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Volume 1, Issue 1 (9-2015) Back to browse issues page
مجله فیزیولوژی و بیوشیمی گیاهی ایران Iranian Journal of Plant Physiology and Biochemistry
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