Suinong10,a soybean(Glycine max) cultivar,was used as materials in this study.Drought and water-logged treatments were employed to compare differences of several endogenous hormones and protective enzyme activities in soybean seedling leaves.The results showed that the content of GA and ABA were increased,the content of ZR and IAA were reduced with the drought treatment,the content of MDA and the activity of SOD was increased.Moreover,the content of IAA,GA and MDA were increased under the water stress,howev...