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Effect of calcium application on physiological characteristics and grain yield of soybean in the conditions of soil contamination to lead
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Abstract: (2805 Views) |
Calcium plays an important role in plant growth and development and response to environmental tensions. However, its effect on the plant response to heavy metal tension has not been widely investigated. Therefore, in order to investigate the role of calcium on lead tension tolerance in soybean a pot experiment was conducted in Vavan region at the south of Tehran. The present research was carried out as factorial at the basis of completely randomized design with three replications. Treatments included three levels of lead (zero, 100 and 200 milligram of lead nitrate per kilogram of soil) and three calcium levels (zero, 200 and 400 milligram calcium chloride per kilogram soil). Results showed that lead tension increased lead concentration in the root, lipids peroxidation and antioxidant enzymes activity such as superoxide dismutase and catalase. Lead toxicity also reduced the traits of vegetation index, relative water content, leaf area, biomass and soybean grain yield. On the other hand, calcium application especially 400 milligram of chloride calcium per kilogram soil declined lead uptake and lipids peroxidation and further increasing superoxide dismutase and catalase enzymes activities under lead tension conditions. Calcium application improves the growth-related traits, including vegetation index, relative water content, leaf area, biomass and grain yield of soybean. These results revealed that calcium via reducing lead uptake, increasing antioxidant enzymes activity, improving plant water status and chlorophyll content can be used as a profitable tool in tolerance to lead tension in soybean. |
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| Keywords: Beans, Grain yield, Heavy metals and Relative water content. |
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Full-Text [PDF 201 kb]
(3344 Downloads)
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Type of Study: Applicable |
Subject:
Crop Physiology
Received: 2017/11/9 | Accepted: 2017/11/9 | Published: 2017/11/9
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