Enhanced Catechol Oxidase and Peroxidase Activities as Possible Markers for Measuring Chromium Tolerance in Sorghum (Sorghum bicolor L.) Genotypes
Elhassan, H., Abdalla, A., El Nur, E. (2015). Enhanced Catechol Oxidase and Peroxidase Activities as Possible Markers for Measuring Chromium Tolerance in Sorghum (Sorghum bicolor L.) Genotypes. EKB Journal Management System, 5(1), 117-123. doi: 10.21608/sjdfs.2015.194473
Hajo Elzein Elhassan; Abdel Wahab Hassan Abdalla; El Busra El Shiekh. El Nur. "Enhanced Catechol Oxidase and Peroxidase Activities as Possible Markers for Measuring Chromium Tolerance in Sorghum (Sorghum bicolor L.) Genotypes". EKB Journal Management System, 5, 1, 2015, 117-123. doi: 10.21608/sjdfs.2015.194473
Elhassan, H., Abdalla, A., El Nur, E. (2015). 'Enhanced Catechol Oxidase and Peroxidase Activities as Possible Markers for Measuring Chromium Tolerance in Sorghum (Sorghum bicolor L.) Genotypes', EKB Journal Management System, 5(1), pp. 117-123. doi: 10.21608/sjdfs.2015.194473
Elhassan, H., Abdalla, A., El Nur, E. Enhanced Catechol Oxidase and Peroxidase Activities as Possible Markers for Measuring Chromium Tolerance in Sorghum (Sorghum bicolor L.) Genotypes. EKB Journal Management System, 2015; 5(1): 117-123. doi: 10.21608/sjdfs.2015.194473

Enhanced Catechol Oxidase and Peroxidase Activities as Possible Markers for Measuring Chromium Tolerance in Sorghum (Sorghum bicolor L.) Genotypes

Scientific Journal for Damietta Faculty of Science
Volume 5, Issue 1, December 2015, Page 117-123  XML PDF (243.58 K)
Document Type: Original articles
DOI: 10.21608/sjdfs.2015.194473
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Authors
Hajo Elzein Elhassan email 1; Abdel Wahab Hassan Abdalla2; El Busra El Shiekh. El Nur3
1Environment, Natural Resources and Desertification Research Institute, National Centre for Research P. O. Box 6096 Khartoum Sudan
2Department of Agronomy, Faculty of Agriculture, University of Khartoum, Khartoum, Sudan
3Department of Botany, Faculty of Science, University of Khartoum, Khartoum, Sudan
Abstract
The aim of the present study was to estimate the effect of chromium on catechol oxidase and peroxidase activities in ten sorghum genotypes grown in soil amended by different concentrations of chromium. 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., Seeds were sown in polyethylene bags filled with 2 kg soil (clay and sand, 2:1). Two weeks after sowing, the seedlings were irrigated with eight levels of chromium (Cr-VI) concentrations (0, 2.5, 5, 10, 20, 30, 40, and 50 mg/l.). Samples for assaying enzyme (catechol oxidase and peroxidase) activities were taken three times (on the 8, 12, and 15 day) following chromium application. The results revealed that the level of enzyme activity of most genotypes was increased significantly with increasing chromium concentration. The magnitude of increase in enzymatic activity was also dependent on the genotype and duration of time after chromium treatment. These findings suggest that, the activities of both enzymes might be used as indicator for selecting chromium tolerant sorghum genotypes. 
Keywords
chromium; catechol oxidase; peroxidase; sorghum; genotypes
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