Volume 16, Issue 2 (Journal of Soil and Plant Interactions 2025)
2025, 16(2): 1-20 |
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1- Department of Biology, Faculty of Science, Yasouj University, Yasouj, Iran
2- Department of Biology, Faculty of Science, Yasouj University, Yasouj, Iran ,a.mohtadi@yu.ac.ir
3- Department of Agronomy and Plant Breeding, Faculty of Agriculture, Yasouj University, Yasouj, Iran
2- Department of Biology, Faculty of Science, Yasouj University, Yasouj, Iran ,
3- Department of Agronomy and Plant Breeding, Faculty of Agriculture, Yasouj University, Yasouj, Iran
Abstract: (672 Views)
Background and Objective: While nickel is a necessary trace element, its accumulation in the environment becomes toxic, inhibiting germination and plant growth. Selenium, also an essential micronutrient, can function as a protective agent against such abiotic stresses. The present study aimed to evaluate the effects of selenium and nano-selenium application on the physiological and growth indices of canola (Brassica napus L.) under nickel stress.
Methods: In the present study, the effects of different levels of nickel and selenium on some physiological and biochemical traits of canola were investigated under hydroponic conditions in a factorial experiment based on a completely randomized design with four replications. The first factor was nickel application in the nutrient solution at three levels (0, 10, and 50 μM) supplied as nickel sulfate. The second factor was a combination of selenium application in two forms: (1) selenium added to the nutrient solution as selenate at three levels (0, 10, and 20 μM) from sodium selenate, and (2) foliar spraying of nano-selenium at three levels (0, 2, and 5 ppm).
Results: The results indicated that exposure to 10 μM nickel did not cause any significant changes in the measured indicators compared to the control. The 50 μM nickel application increased nickel accumulation in both the roots and shoots, but reduced the other traits. Increasing nickel levels also enhanced root potassium content. The application of 10 μM selenium and 2 ppm nano-selenium generally moderated adverse effects of nickel toxicity. These treatments enhanced root and shoot dry weights compared to the control by increasing soluble sugar levels in leaves, boosting potassium retention in roots, reducing electrolyte leakage percentage, and elevating chlorophyll content.
Conclusion: This study demonstrates that selenium enhances canola growth under nickel stress by increasing leaf soluble sugar and potassium levels. Finally, the application of 10 μM selenium in the nutrient solution or foliar spraying with 2 ppm nano-selenium is recommended for canola cultivation under nickel stress conditions.
Methods: In the present study, the effects of different levels of nickel and selenium on some physiological and biochemical traits of canola were investigated under hydroponic conditions in a factorial experiment based on a completely randomized design with four replications. The first factor was nickel application in the nutrient solution at three levels (0, 10, and 50 μM) supplied as nickel sulfate. The second factor was a combination of selenium application in two forms: (1) selenium added to the nutrient solution as selenate at three levels (0, 10, and 20 μM) from sodium selenate, and (2) foliar spraying of nano-selenium at three levels (0, 2, and 5 ppm).
Results: The results indicated that exposure to 10 μM nickel did not cause any significant changes in the measured indicators compared to the control. The 50 μM nickel application increased nickel accumulation in both the roots and shoots, but reduced the other traits. Increasing nickel levels also enhanced root potassium content. The application of 10 μM selenium and 2 ppm nano-selenium generally moderated adverse effects of nickel toxicity. These treatments enhanced root and shoot dry weights compared to the control by increasing soluble sugar levels in leaves, boosting potassium retention in roots, reducing electrolyte leakage percentage, and elevating chlorophyll content.
Conclusion: This study demonstrates that selenium enhances canola growth under nickel stress by increasing leaf soluble sugar and potassium levels. Finally, the application of 10 μM selenium in the nutrient solution or foliar spraying with 2 ppm nano-selenium is recommended for canola cultivation under nickel stress conditions.
Type of Study: Research |
Subject:
Plant growth under stressful conditions
Received: 2025/05/5 | Accepted: 2025/06/29 | Published: 2025/09/22
Received: 2025/05/5 | Accepted: 2025/06/29 | Published: 2025/09/22
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Journal of Soil and Plant Interactions by http://jspi.iut.ac.ir is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.
This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License which allows users to read, copy, distribute and make derivative works for non-commercial purposes from the material, as long as the author of the original work is cited properly.
This work is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported License which allows users to read, copy, distribute and make derivative works for non-commercial purposes from the material, as long as the author of the original work is cited properly.
