Alleviation of Salinity Stress in White Corn (Zea mays L.) Plant by Exogenous Application of Salicylic Acid
This experiment was conducted to study the effect of exogenous application of Salicylic Acid ( 200 ppm) to alleviate the damage in Zea mays L. plants under different NaCl doses (20, 40, 60 and 100 mMol). Shoot and root lengths, fresh and dry weights, leaf area, chlorophyll a, chlorophyll b, total chlorophyll, chlorophyll stability index were measured. The antioxidant enzymes (lipid peroxidase and glutathione) activities were estimated. NaCl significantly (P > 0.05) reduced all measured growth parameters, photosynthetic efficiency and antioxidant oxidative enzyme contents. Exogenous application of SA alleviated the inhibitory effects of NaCl on Zea Mays plants. SA enhanced plant salt tolerance in terms of improving the measured plant growth criteria. Moreover, the antioxidant enzyme contents were enhanced in response to NaCl and/or SA treatment providing s synergistic interaction. The toxic effects generated by the lower concentration of NaCl (20mM) were completely overcome by the application of SA .SA ameliorated the stress generated by NaCl through the antioxidant system and the stability of the photosynthetic process.
Mona A. Ismail,
Alleviation of Salinity Stress in White Corn (Zea mays L.) Plant by Exogenous Application of Salicylic Acid, American Journal of Life Sciences.
Vol. 1, No. 6,
2013, pp. 248-255.
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