This invention is directed to a screening method for the selection of mutations
which confer acetohydroxyacid synthase (AHAS) inhibiting herbicide resistance to
wheat. After mutagenesis of wheat seeds, the seeds are soaked in an AHAS inhibiting
herbicide-containing solution containing a particular class of AHAS inhibiting
herbicide. After planting, the soil containing the seeds is sprayed with an AHAS
inhibiting herbicide of the same class as that used in the seed soak step prior
to the emergence of the seedlings from the soil. Those wheat seedlings which emerge
and are normal in appearance demonstrate resistance to the class of AHAS inhibiting
herbicides used in the seed soak and spraying steps. This invention is also directed
to the wheat selections and seeds identified by the screening method.