【摘要】 进一步提高辐射诱变效率,改进筛选技术仍是作物辐射遗传育种的重要议题。近年来我们以水稻为材料进行的研究表明:（1）辐射与杂交相结合,⁶⁰Coγ射线处理与Ar⁺、CO₂、远红外等激光处理相结合,以及在总照射量一定的条件下,根据不同的育种目标,选择适宜的照射量率,均有提高水稻诱变效果的作用。（2）根据M₁代性状表现与M₂代变异频率的相关性,选择一定性状的M₁代材料留种,有减少选择世代工作量,提高筛选效率的作用。更多还原

【Abstract】 Increasing mutagenic efficiency and improving selection method are important topics for crop mutation breeding. Investigation on the radiation breeding for rice (Oryza Sativa L. ) showed that the crossing in combination with gamma ray irradiation or laser irradiation and proper selection of dosage rate can increase mutagenic efficiency. According to the correlation of phenotype in Mt generation and mutation frequency in M2 for rice, the materials with certain characters were chosen as seeds, thus the works of generation selections will be reduced.更多还原