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Journal of Biological Sciences

Year: 2007 | Volume: 7 | Issue: 4 | Page No.: 592-598
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Authors

Reza Haji Hosseini

Maliheh Khanlarian

Mahlagha Ghorbanli

Keywords

Research Article

Effect of Lead on Germination, Growth and Activity of Catalase and Peroxidase Enzyme in Root and Shoot of Two Cultivars of Brassica napus L.

Reza Haji Hosseini, Maliheh Khanlarian and Mahlagha Ghorbanli
In this project the different concentration of lead [(NO3)2Pb] (0, 100, 200, 400, 600, 800 and 1000 μM) on germination and the effect of nutrient solution with and without lead (0, 100, 200 and 400 μM), in hydroponics culture were examined. The growth parameters and activity of enzymes catalase and peroxidase on Brassica napus cv. Pf 7045 91 and Hyola 401 were studied. Lead caused a decrease on germination in two cultivars (p< 05). By increasing lead concentration more decreasing in germination on Pf than the Hyola has been shown. Growth parameters on both cultivars have been decreased by lead effect. The enzyme activity of catalase and peroxidase in root and shoot on both cultivars by increasing lead concentration has been increased. The activity of root peroxidase has shown significant decrease only in high lead concentration on Pf (p< 0.05). The results show that the germination on Pf was more resistant than the Hyola and at vegetative stage in Hyola has more resistance than the Pf.
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