抗稻瘟病细胞突变体R_2代的单株有效穗数、单株产量和株高等性状具有较大的遗传变异系数和选择潜力,生育期、千粒重、结实率、穗长和单株有效穗数等具有较高的遗传力(>50％).在抗病细胞突变体中进行丰产性选择,以穗实粒数、结实率或单株有效穗数、穗实粒数等性状结合单株产量进行综合选择,可获得较为理想的结果.对R_3群体的主成分分析表明,高抗高产株系应该是穗实粒数和单株有效穗数中等偏多、结实率高、着粒密度大、中熟或中熟偏迟.经主成分分析入选的2个优良株系,通过R_4代种植鉴定,来自D_3[(沈农1033//Jaya/233)H_2]品系的88-334株系表现为高抗稻瘟病、整齐度好、中熟高产,有较大的增产潜力,同时还选择出12个高产高抗稻瘟病的优良单株. The effective panicle number per panicle, single plant yield and plant height traits of resistant rice blast mutant R_2 had larger genetic coefficient of variation and selection potential, growth period, 1000-grain weight, seed setting rate, spike length and effective panicle per plant With high heritability (> 50%) .In the disease-resistant cell mutants, high yielding selection was carried out in terms of grain number per spike, seed setting rate, number of panicle per plant, number of panicles per panicle, The result of principal component analysis showed that the high resistance and high yielding lines should be the middle grain number of panicles and the effective panicles per plant with high seed setting rate and large grain density, Mature or moderately mature.The 88-334 lines from D_3 [(Shennong 1033 // Jaya / 233) H_2] lines were identified as high by 2 principal lines selected from principal component analysis by R_4 generation Blast resistance, good uniformity, high yield in mid-maturity, greater yield potential, but also selected 12 high yield and high resistance to blast good single plant.