A water culturing experiment was conducted to study the effects of Cd on growth of Glycine max seedlings, contents of proline and activities of peroxidase (POD) and nitric acid reductase (NR) in Glycine max leaves, and to explore differences of Cd-tolerance among six varieties of Glycine max. The results indicated that the height of Glycine max seedlings and activity of NR significantly decreased, and contents of proline and activity of POD significantly increased under Cd treatments. Under Cd stresses, growth characters and Cd-tolerance we...