Evaluation of Drought Stress Resistance of Quinoa Cultivars in the Presence of Salicylic Acid on Biochemical Indices of Quinoa

شیرین نژاد, رضا and ترابی گیگلو, موسی and محمودی, فاطمه Evaluation of Drought Stress Resistance of Quinoa Cultivars in the Presence of Salicylic Acid on Biochemical Indices of Quinoa. In: 2nd International and 6th National Iranian Congress on Organic vs. Conventional Agriculture, August 2019, Ardabil, Iran.

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Abstract

In order to study the effect of salicylic acid on Chenopodium quinoa cultivars under drought stress on morphological, physiological and biochemical indices of Quinoa, a factorial experiment in a randomized complete block design with three factorial randomized block design Agriculture and Natural Resources of Mohaghegh Ardabili University was implemented Four Quinoa cultivars were used in this experiment and irrigation was performed at three soil moisture discharge levels of 40, 65 and 90% FC (HH150 soil moisture meter). Two levels of salicylic acid (0 and 1 mM) were used to reduce stress. In this experiment irrigation was the main factor and cultivars (sajima, red carina, q29, q26) and salicylic acid levels were considered as sub-factors. The results showed that the treatments caused antioxidant enzyme activity to decrease and chlorophyll content of Kinnava cultivars was increased, with the highest activity of catalase (0.991), peroxidase (88.09 / 91) and polyphenol oxidase (0.46). In Sayima cultivar, 90% FC (no stress or control) and 1 mM salicylic acid irrigation treatment resulted in the lowest activity of enzymes in non-stress and non-salicylic acid treatments, respectively. The lowest chlorophyll a (0.72), b (0.104) and total (1.72) were obtained in q29 cultivar under 90% FC irrigation (no stress or control) and no salicylic acid. The results showed that the Asad Salisic treatment moderated the negative effects of drought stress on Quinoa cultivars.

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