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IJSTR >> Volume 3- Issue 3, March 2014 Edition

International Journal of Scientific & Technology Research  
International Journal of Scientific & Technology Research

Website: http://www.ijstr.org

ISSN 2277-8616

Effect Of Chromiumon Antioxidant Enzymeactivityin Some Sorghum(Sorghum Bicolor L.) Genotypes Plant

[Full Text]



HajoElzeinElhassan, AbdelWahab HassanAbdalla, El Busra El Shiekh El Nur



Key words: chromium, malate dehydrogenase, alcohol dehydrogenase, glutamate dehydrogenase



ABSTRACT: The aim of this study was to investigate the effect of chromium on enzymatic activity of sorghum genotypes grown under polluted conditions. Ten sorghum genotypes, (Tabat, Wad Ahmed, L4, L7, L12, L14, L16, L25, L32 and L34) were obtained from the Department of Agronomy, Faculty of Agriculture University of Khartoum, grown in Polyethylene bags filled with 2 kg soil (clay and sand, 2:1). Two weeks after sowing, seedlings of grown plants were irrigated with eight levels of chromium (Cr VI) concentrations (0, 2.5, 5, 10, 20, 30, 40, and 50 mg/l.) for 15 days. Samples of plants were taken three times (at 8th, 12th, and 15th days) after chromium application to measure the enzymatic activity, namely, malate dehydrogenase, alcohol dehydrogenase and glutamate dehydrogenase. The results revealed that the level of enzyme activity increased significantly with increase in chromium concentration. Also the rate of increase in enzymatic activity, depend mainly on genotype and age of the plant. These findings suggest that, the activity of antioxidant enzymes of sorghum play a significant role in plant defense system.



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