Patent ID: 7399905

Claim:
A herbicide-resistant rice plant, wherein said rice plant expresses an acetohydroxyacid synthase in which the amino acid at position 627 is asparagine; wherein said rice plant is produced by the process of: (a) crossing or back-crossing the rice plant having ATCC accession number PTA-902, PTA-905, PTA-906, or PTA-908 with other rice germplasm; (b) growing rice plants resulting from said crossing or back-crossing in the presence of at least one herbicide that normally inhibits acetohydroxyacid synthase, at levels of the herbicide that would normally inhibit the growth of a rice plant; and (c) selecting for further propagation, as hybrids or as varieties, rice plants resulting from said crossing or back-crossing, wherein the rice plants selected are plants that grow without significant injury in the presence of the herbicide.