Studying the effect of irrigation water salinity on the enzymatic and non-enzymatic antioxidant system of cotton mutant genotypes

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Jafar Aghaee Majid

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Journal Paper

Paper Information

Journal: IRANIAN JOURNAL OF PLANT AND BIOTECHNOLOGY Year:2023 | Volume:18 | Issue:3 Page(s): 27-40

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Information Journal Paper

Title

Studying the effect of irrigation water salinity on the enzymatic and non-enzymatic antioxidant system of cotton mutant genotypes

Author(s)

Jafar Aghaee Majid | Issue Writer Certificate

Keywords

Antioxidant

Catalase

Chlorophyll

Proline

Salinity

Abstract

This study was conducted in order to investigate the efficiency of Antioxidant systems of cotton mutant genotypes under irrigation water Salinity conditions in the form of split plots based on a randomized complete block design with three replications. The treatments included irrigation with salinities of 4 (control), 8 and 12 ds. m-1 as main plots and two or three Shayan genotypes, mutant LM-1673 and LM-1303 as sub-plots. The results showed that Salinity increased the amount of hydrogen peroxide and malondialdehyde in cotton cultivars, and then the amount of enzymatic and non-enzymatic Antioxidants also increased. The increase in the production of hydrogen peroxide and malondialdehyde in Salinity of 12 decisiemens/m decreased the Chlorophyll index, especially in sensitive cultivars. Also, the results showed that the highest amount of non-enzymatic Antioxidants such as Proline, ascorbic acid, phenol, flavonoid and anthocyanin was obtained in the irrigation conditions with salt water with a Salinity of 12 ds. m-1. The highest level of Catalase enzyme activity was in LM-1303 cultivar and at the Salinity level of 12 ds. m-1. The highest level of activity of superoxide dismutase and glutathione reductase enzymes was obtained in the Salinity treatment of 8 ds. m-1. Based on the results, it was found that the variety LM-1303 has the most sensitivity to Salinity stress, and in irrigation water Salinity, due to the increase in lipid peroxidation caused by the production of hydrogen peroxide and malondialdehyde, the amount of non-enzymatic Antioxidants and the amount of activity of enzymatic Antioxidants for overcoming oxidative stress increases.

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