Cd2+ and Ni2+ dififerently affected the rates of net photosynthesís (P^) and transpiration (E), chlorophyll (Chl) content, and stomatal conductance (gj in different leaves of wheat. and Chl content in the top leaf were affected more than the lower leaves by Ni2+, whereas the deleterious effect of Cd^"*" was more pronounced in the third leaf. Ni2+ and Cd2+ slightly decreased the relative water content and leaf water potential of all the leaves after 2 d of treatment. However, this reduction was relatively more severe under Cd^^ treatment than with Ni2+ particularly in the top leaf after 4 d of the treatment.