Paper Details

PJB-2011-385

ECOPHYSIOLOGICAL RESPONSES OF RICE (ORYZA SATIVA L.) TO HEXAVALENT CHROMIUM

MAQSOOD AHMAD1, A. WAHID2*, SHEIKH SAEED AHMAD3, ZAHID ALI BUTT4 AND MARYUM TARIQ1
Abstract

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The effects of hexavalent chromium (Cr) were studied in rice plants by applying its different concentrations ranging from 50-500 mg/kg of soil. Cr significantly altered growth of rice plants and reduced dry weights of shoot (7-58%) and roots (7-73%) in different treatments. Cr impact was remarkably high on photosynthetic rate (21-62%), transpiration rate (5-59%), and stomatal conductance (21-66%). Chlorophyll a and b and carotenoid contents were also reduced in Cr-treatment plants by 17-47%

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