Effect of tungsten on growth, biochemical constituents, molybdenum and tungsten contents in wheat

A. Kumar and N.C. Aery
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A. Kumar: Laboratory of Geobotany and Biogeochemistry, Department of Botany, University College of Science, Mohanlal Sukhadia University, Udaipur, Rajasthan, India
N.C. Aery: Laboratory of Geobotany and Biogeochemistry, Department of Botany, University College of Science, Mohanlal Sukhadia University, Udaipur, Rajasthan, India

Plant, Soil and Environment, 2011, vol. 57, issue 11, 519-525

Abstract: The effect of various concentrations (3, 9, 27, 81, and 243 mg/kg) of tungsten (W) on growth performance, biochemical constituents and tungsten and molybdenum (Mo) contents in wheat was observed. Lower doses (up to 9 mg/kg) of tungsten showed promotory effects whereas higher doses retarded. An increment in growth, biomass, chlorophyll and carbohydrate contents was observed. Tungsten contents in root and shoot showed a very strong linear dependence on the soil applied W contents. Mo contents in plant tissue showed an increase with an increase in the W contents in plant tissue up to a threshold after which it showed an abrupt decrease. The activity of peroxidase enzyme decreased with lower application of W. Higher administration of tungsten (27-243 mg/kg) resulted in increased total phenol, free proline and activity of enzyme peroxidase.

Keywords: oxidative stress; toxic elements; sodium tungstate; plant stress metabolism; pigments; Triticum aestivum L (search for similar items in EconPapers)
Date: 2011
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Persistent link: https://EconPapers.repec.org/RePEc:caa:jnlpse:v:57:y:2011:i:11:id:345-2011-pse

DOI: 10.17221/345/2011-PSE

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