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对不同剂量的同步辐射 (软X射线 )辐照水稻种子 ,研究其细胞学效应。结果表明 ,软X射线同步辐射处理后 ,在水稻根尖细胞内可诱发各类染色体结构变异。 3个品种的细胞染色体畸变率随照射剂量的增加而提高 ,有丝分裂指数明显下降。同步辐射的细胞学效应与γ射线相似。 3个品种的辐射敏感性从高至低的顺序为加育2 93 >舟 90 3 >浙 73 3
Radiation of rice seeds at different doses of synchrotron radiation (soft X-ray) was performed to investigate their cytological effects. The results showed that after X-ray synchrotron radiation treatment, all kinds of chromosomal structural variations were induced in root apical cells of rice. The chromosome aberration rate of three cultivars increased with the increase of irradiation dose, and the mitotic index decreased obviously. Synchrotron radiation cytology and gamma-ray similar. Radiation sensitivity of three cultivars from high to low in the order of fertility 2 93> boat 90 3> Zhejiang 73 3