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水稻突变体Ｒ＿９１７是经辐射诱变育成的抗病性强、抗谱广的水稻突变新种质。经稻瘟病菌生理小种ＺＢ＿１５、ＺＣ＿１３和ＺＥ＿３测定，其抗性由一对显性基因控制。经与秀水１１、秀水８６１等品种杂交后代抗性分析，表明Ｒ＿９１７的抗性基因容易转育，是一个能广泛应用的育种材料。
Rice mutant R_917 is a new germplasm with high resistance and wide spectrum of resistance to rice mutation induced by radiation. The resistance of M. grisea physiological races ZB_15, ZC_13 and ZE_3 was determined by a pair of dominant genes. The resistance analysis of hybrid progeny with Xiushui 11 and Xiushui 861 showed that the resistance gene of R_917 was easy to be transferred and was a widely used breeding material.