Effects of Cd, Zn stress on the growth, contents of proline and GSH of tomato seedlings

An experiment was carried out to evaluate the effects of various cadmium and zinc stress on the germination, growth and correlatively physiological indicators of tomato seedlings. The results show that the cadmium and zinc remarkably inhibite the sprouting potential and the root elongation, but sprouting ratio is affected little. The plant height, biomass accumulation, water content of leaves and stem, chlorophyll content and chlorophyll a/b ratio are decreased. The contents of soluble sugar, proline and GSH are increased and those contents in leaves are higher than those in roots.