EFFECT OF SALICYLIC ACID ON SOME OF MORPHOLOGICAL AND PHYSIOLOGICAL TRAITS OF WHEAT (Triticum aestivum L.) UNDER DIFFERENT LEVELS OF CADMIUM STRESS

Abstract

Nowadays, salicylic acid is used as a growth regulator to reduce the negative effects of different levels of stress. This research was conducted as factorial experiment on a completely randomized block design. Wheat plants were planted in four levels of cadmium (0, 100, 200 and 300 μmol) with three levels of salicylic acid (0, 0.5 and 1.0 mmol) in three replications. The results showed that root heights, fresh and dry weight of the stem were decreased significantly, and leaf proline and catalase and superoxide dismutase enzymes were increased due to cadmium stress. Foliar application of salicylic acid in non-stress conditions had a significant effect on the traits and resulted in their increase, as well. Application of two concentrations of 0.5 and 1.0 mmol salicylic acid in stress conditions resulted in reduction of the effects of stress and consequently, reduction of proline and catalase and superoxide dismutase enzymes and growth was improved. The amount of 1.0 mmol of salicylic acid was more effective and it can be concluded that salicylic acid has a moderating and decreasing effect on the negative effects of cadmium toxicity in wheat plant.

The Investigation of the Effect of the Salicylic Acid on the Antioxidant Potential, Vitamin C Content and DNA Protection Activity of Wheatgrass (Triticum aestivum L.)

“…Saheri et al, (2020) found that foliar spraying of SA of common purslane plants under drought stress resulted with increase in length, fresh weight and dry weight. Foliar spraying of SA caused increase in shoot and root length and shoot fresh and dry weight of wheat seedlings in greenhouse (Behnam et al, 2018). It was reported that shoot and root fresh mass of 15 days old wheat plants growth from seeds soaked with SA was weightier than control (Loutfy et al, 2020).…”

Unraveling the Mechanisms of Salicylic Acid and Rehydration and the Physiological Benefits in Pepper Plants Grown under Water Deficit

“…Thus, the attenuating effect of SA under drought conditions may be associated with its role in photosynthesis [22,23] and in stomatal regulation [24], which, in turn, act as pathways eliminating reactive oxygen species and providing protection to the photosynthetic apparatus under stress conditions [25,26].…”