Volume 8, Issue 33 (vol. 8, no. 33, 2020 2019)
2019, 8(33): 15-28 |
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Azarmi R. Effect of salicylic acid on some vegetative and biochemical properties of cucumber (Cucumis sativus L.) under copper stress. Plant Process and Function 2019; 8 (33) :15-28
URL: http://jispp.iut.ac.ir/article-1-1072-en.html
URL: http://jispp.iut.ac.ir/article-1-1072-en.html
Department of Horticulture, Faculty of Agriculture and Natural Resources, University of Mohaghegh Ardabili, Ardabil, Iran , r_azarmi@uma.ac.ir
Abstract: (2472 Views)
Soil and water toxicity with copper (Cu) create serious problems on plant growth and production as well as human health. Exogenous application of salicylic acid (SA) can alleviate adverse effects of Cu stress. In this research, in order to investigate the effect of salicylic acid (SA) on the morphological and physiological properties of cucumber under cupper (Cu) stress, an experiment was carried out as factorial based on completely randomized block design with three levels of cupper of 23, 47 and 94 µM and salicylic acid with two levels of 0 and 750 µM with three replications under hydroponics conditions. The results showed that copper stress negatively affected root dry weight, root volume, leaf area, leaf fresh and dry weight of cucumber plants. The greatest root fresh weight and Fv/Fm ratio was obtained with 23 µM cu treatment in both SA and non-SA treatments. Cu accumulated more heavily in roots than in shoots. The ascorbate peroxidase (APX) activity in the leaves was increased by increasing copper concentration and the highest activity of APX was observed in plants fed with 94 µM and was more pronounced in plants treated with SA, whereas, peroxidase (POX) activity showed reverse trend. The highest yield (530 g plant) was obtained in the concentration of 23 µM Cu and treated with salicylic acid, but the lowest yield (282 g plant) was achieved in the concentration of 94 µM Cu and without salicylic acid treatment. Based on the results of this experiment, application of 750 µM SA can alleviate the negative effects of Cu stress at concentrations of 47 and 94 µM on the growth and biochemical responses in cucumber
Type of Study: Applicable |
Subject:
Toxic ions stress
Received: 2018/06/8 | Accepted: 2018/10/21 | Published: 2020/05/11
Received: 2018/06/8 | Accepted: 2018/10/21 | Published: 2020/05/11
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