The present invention relates to Namil mutant progeny rice cultivars Oryza sativa Namil (SA)-Tfnl1, Oryza sativa Namil (EMS)-Tfnl1, which show resistance to herbicides containing tiafenacil as an active ingredient, The present invention relates to a method for breeding a rice variety of a resistant Namilbyeo mutant progeny, a food composition comprising the rice variety or its seed, and a feed composition comprising the rice variety or its seed. The rice variety of the Namilbyeo mutant progeny provided by the present invention shows agronomic characteristics similar to that of the original Namilbyeo, while very stably showing terado herbicide tolerance, and thus weedy rice and weeds by applying a non-selective herbicide. By effectively controlling the disease, it will be possible to contribute to the reduction of production labor for growing crops.
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