在水稻遗传基因（ＣＰＴＩ） 植株抗虫性测定的同时，我们进行了转基因再生植株突变筛选的研究，发现：①水稻转基因再生植株第一代矮化现象较普遍，但大多数植株可能是受组织培养的影响，在第二代既可恢复原种性，只有少数是变异株；而变异频率较大的性状是生育期，２ 年共获得了４ 株矮化株和１２ 株早熟株；②突变体植株遗传具相对稳定性，第二代株系内即表现整齐一致、不分离；③经过基因转化处理后的再生植株发生突变的频率增大。 We also conducted a screening study on the mutation of transgenic regenerated plants in the determination of plant pest resistance in rice genetic (CPTI) plants. The results showed that: (1) The first generation of dwarfing in transgenic rice plants is common, but most of the plants may be affected by tissues In the second generation, the original species was restored, only a few of them were mutant strains, while the characters with larger variation frequency were the growth period. Four dwarf and 12 early-maturing strains were obtained in two years. The mutation Plant genetic relative stability, the second generation of the line that is neat and consistent, not isolated; ③ genetically modified plants after the mutation frequency increases.