this invention relates to stable and genetically transformed cereal plants , other than maize or rice , that comprise an exogenous dna expressing phosphinothricin acetyl transferase to impart resistance to phosphinothricin in said cereal plants . cereal plants within the scope of the invention include , but are not limited to , wheat , barley and oats . the invention also pertains to transgenic cereal plants which further comprise screenable markers and transgenic seed obtained from said plants .