In order to clarify the response to Cr~(6+)stress of different genotypes of wheat and its tolerance mechanism,Yangmai 16(Cr~(6+)tolerance)and Yumai 51(Cr~(6+)sensitivity)were used to study the influence of different concentration of Cr~(6+)(0,10,50,100 and 150μmol·L~(-1))treatments on seed germination,seedling growth,activities ofα-amylase during seed germination,antioxidant enzymes,the level of oxidative stress and osmotic regulator contents change in the seedling roots.The results showed that with the inc...