The plant, plant part, cu00c9lula of plant seed, IMI nucleic acid isolated expressu00e7o tape, cu00c9lula stewardess nu00e7o human transformau00c7u00e7o vector, plant transformation methods to control weeds in vicinidade a plant to produce a plant transformed with tol Eru00c2ncia increased to a herbecida of imidazolinona, to increase the activity of AHAS in a plant.To select the cu00c9lula plant transformed to produce a plant resistant to herbecida, to increase the resistance to the herbicide to a plant and to combat unwanted vegetau00c7u00e7o, polipeptu00cddeo isolated, and plant resistant to herbecida