Role of salicylic acid and ascorbic acid in the alleviation of salinity stress in wheat (Triticum aestivum L.)

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Research Paper 01/02/2015
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Role of salicylic acid and ascorbic acid in the alleviation of salinity stress in wheat (Triticum aestivum L.)

Maryam Abbasi, Elham Faghani
J. Bio. Env. Sci.6( 2), 107-113, February 2015.
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Ascorbic acid is a major primary antioxidant, plays an important role in preserving the activity of enzymes. Salicylic acid is an endogenous growth regulator of phenolic nature, which participates in the regulation of physiological processes in plants. This research was conducted to evaluate the effects of hormonal priming with ascorbic acid (AS) and salicylic acid (SA) C0(control), C1(2.5%AS), C2(5%AS), C3(2.5%SA) and C4(5%SA) on wheat (Triticum sativum) germination and seedling growth under normal (S0) and saline NaCl,S1 (150 Mm), S2 (300 mM), S3 (150 Mm NaCl ratio CaCl2) and S4 (300 mM NaCl ratio CaCl2) in order to determine their usefulness in increasing relative salt-tolerance. Results showed that 300Mm (NaCl/1.8CaCl2) seed pretreatment by 2.5% Ascorbic acid can alleviate salinity stress by increasing proline and Glycinbetaien. Also priming with salcilic acid can decrease salinity stress 300Mm (NaCl and NaCl/1.8CaCl2) effects through increase superoxide dismutase. Salcilic acid can defense against ROS with superoxide dismutase. During germination test, most of treatments were effective in improving germination and seedling vigor of wheat during salinity stress.


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