Paper Information

Journal:   ELECTRONIC JOURNAL OF SOIL MANAGEMENT AND SUSTAINABLE PRODUCTION   2016 , Volume 5 , Number 4; Page(s) 175 To 184.
 
Paper: 

BIO-REFINING EFFECT OF SILICON ON CADMIUM AND LEAD IN PLANT TISSUES OF SPINACH (SPINACIA OLERACEA L.) (SHORT TECHNICAL REPORT)

 
 
Author(s):  MOBASSER H.R., POURMAND H., AKBARI NODEHI D., GHASEMI M.*
 
* DEPT. OF AGRONOMY, SCIENCE AND RESEARCH TEHRAN BRANCH, ISLAMIC AZAD UNIVERSITY, TEHRAN, IRAN
 
Abstract: 

Background and Objectives: Nowadays the use of fertilizers and pesticides, mining, industrial and non-industrial waste disposal, results in the destruction of most important habitats i.e., the soils. In this regard, the presence of organic and mineral pollutants in the soil, is one of the challenges that human beings face. Lead has been of great importance in heavy metals and hazardous metals in the second rank and highly toxic effects on living organisms. Cadmium, another example of heavy metals due to its toxicity to humans and animals is of great importance from the viewpoint of the environment. Many studies about the relationship between the silicon and the tolerance of plants to heavy metals and the role of silicon in the modified biotic and abiotic stress have been done. This research project was performed to reduce the toxicity of cadmium and lead in spinach by silicon.
Materials and Methods: In order to investigate the use of bio-refining of silicon on cadmium and lead in spinach, a pot experiment was done in Qaemshahr Agriculture University in 2012 as a completely randomized design with four replications. Treatment include silicon (150 mg/kg of Potassium silicon), Pb (100 mg/kg of chloride), Cd (100 mg/kg of chloride), silicon+Pb, silicon+Cd and control as used soil.
Results: The results showed that the maximum concentration of lead in the shoots and roots (respectively 42.45 and 178.20 mg per kg dry matter) was obtained by taking the lead. The accumulations in the treatment of lead + Si (27.82 and 61.90 mg kg DM, respectively) were lower. The length of the shoots on the use of cadmium (14.06 inches) and a minimum length of root involving the use of lead (10.37 inches), decreased as 42.4 and 28.8 percent respectively. The lowest plant fresh weight of individual consumption of lead and cadmium and cadmium together with silicon consumption in comparison with control were 69.1, 69.2 and 65 percent.
Conclusion: The results showed the impact on silicon consumption during the shoot and root compared to the control. It also reduces the accumulation of lead and cadmium zinc application in shoot and root, respectively.

 
Keyword(s): BIO-REFINING, SILICON, CADMIUM, LEAD
 
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