孕穗期电子流注入早籼品种舟 90 3的幼穗组织 ,筛选出优良品质突变体舟 96 3,优良品质突变率 7.6 % ,稻米直链淀粉含量提高到 17.8% ,胶稠度缩短到 6 8mm。舟 96 3第 2代稳定 ,并保持了原品种形态特征和经济性状 At the booting stage, the flowering seeds were infiltrated into young panicles of Zhou indica variety Zhou 90 3. The excellent quality mutants Zhou 96 3 were screened, the mutation rate of good quality was 7.6%, the amylose content of rice was increased to 17.8%, and the gel consistency was shortened to 6 8 mm. The second generation of boat 963 was stable and maintained the morphological characteristics and economic traits of the original breed