Investigation of plants purification capability of Pb on two cultivars of vetch plants(VignaRadiata) in contaminated soils
Journal Title: International Research Journal of Applied and Basic Sciences - Year 2013, Vol 7, Issue 12
Abstract
Vetch plant ( VignaRadiata) is a diploid plant with 2n=2z=22 chromosomes. It is a valuable legume and plays a major role in the nutrition of people of little income in the developing countries, as it is a rich source of high quality protein.Solis contaminated with heavy metals are a major problem of environment. The most important resources of heavy metals penetration into environment are related to industrial activities which include: mining, melting, cladding, metallurgy, fuels consumption, energy conversion, sewage discharge, garbage destruction, pesticides, fertilizers, and sludge application in agriculture sector.To study plants purification capability of Pb on two cultivars of vetch plant (VignaRadiata) in contaminated soils and their effects on morphological characteristics, we conducted a completely randomized trial as factorial. Different concentrations of Pb (0,200,400, and 600 mg/ kg of soil) were used. After four weeks growth on contaminated soil, parameters such as aerial parts height, roots, fresh and dry weight, as well as intake and aggregation levels of Pb in aerial parts and roots were measured in both cultivars of Sistan and Gohar.Analysis results indicated that increased levels of Pb lead to decreased height of aerial parts and roots, and dry and fresh weight of both cultivars. Measuring of metal content showed that with increase in metals concentration in soils, their aggregation into aerial parts will be increased. Metal aggregation within aerial parts and roots was not different significantly, indicating metals transferring from roots to aerial parts. Results show that the vetch plant is able to purify soils and intake heavy metals such as Pb from it.
Authors and Affiliations
Keshtegar, M *| MSc. in Plant Physiology, Biology Group, Department of Basic Sciences, Islamic Azad University, Neyshabour Branch, Iran. email:Mehdi.Keshtegar@Gmail.Com, AkbariMoghaddam , A,R| Scholar ofAgriculture and Natural ResourcesResearch Centerof Sistan, Zabol, Iran., Rostami, M| Phd. in Plant Physiology, Biology Group, Department of Basic Sciences, Islamic Azad University, Damghan Branch, Iran., Jahantigh, S| M.S. in Agriculture, Agriculture Group, Islamic Azad University, GorganBranch, Iran.
Keywords
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