Volume 13, Issue 62 (vol. 13, no. 62 2024)
2024, 13(62): 145-160 |
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Saadat H, Sedghi M. Effect of sodium nitroprusside pretreatment on the improvement of physiological traits and antioxidant enzymes in rice seedlings (Oryza Sativa L.) under salinity stress. Plant Process and Function 2024; 13 (62) : 10
URL: http://jispp.iut.ac.ir/article-1-2021-en.html
URL: http://jispp.iut.ac.ir/article-1-2021-en.html
1- Department of Plant Production and Genetics, Faculty of Agriculture and Natural resources, University of Mohaghegh Ardabili, Ardabil, Iran
Abstract: (230 Views)
In order to investigate the effect of sodium nitroprusside pretreatment on the improvement of physiological traits and antioxidant enzymes in rice seedlings under salinity stress, a factorial experiment was conducted in a completely randomized design with three replications at Mohaghegh Ardabil University in 2023. Experimental treatments included four salinity levels (0, 50, 100, and 150 Mm) and sodium nitroprusside in three levels (control, 40 and 80 µm). The results showed that salinity of growth indices, including germination percentage (GP), germination rate (GR), Seedling Length Vigor Index (SLVI) and Seedling Weight Vigor Index (SWVI), reduced, but seed priming with different levels of sodium nitroprusside, especially the level of 80 µm, improved these traits. Salinity increased the Mean Germination Time (MGT), so that the highest MGT was observed at (0.371 days) sodium nitroprusside 40 µm and salinity of 150 mM. The Catalase (CAT) and superoxide dismutase (SOD) enzymes activity in pretreatment with sodium Nitroprusside 80 µm and a salinity of 150 mM were 37 and 40% higher than the control (distilled water) and without salinity, respectively. Salinity increased the activity of peroxidase enzyme, so that the lowest was observed at peroxidase enzyme (58.444 units mg-1 protein) in the control (without salinity). Also, the peroxidase activity in pretreatment with sodium nitroprusside 80 µm compared with the control (distilled water) showed an increase of about 14%. The results showed that seed treatment with sodium nitroprusside 80 µm improves rice seed germination and biochemical traits, it can reduce the harmful effects of salinity on some traits in rice seedlings and improve seedling growth.
Article number: 10
Type of Study: Research |
Subject:
Salt Stress
Received: 2024/01/16 | Accepted: 2024/04/7 | Published: 2024/10/14
Received: 2024/01/16 | Accepted: 2024/04/7 | Published: 2024/10/14
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