^(12)C^(6+)辐射后兵豆根尖细胞染色体形态变异分析

Analysis of Chromosome Morphological Variation in the Root Tip Cells of Lens culinaris After ^(12)C^(6+) Radition

室温条件下,利用兰州重离子加速器装置对兵豆干种子进行^(12)C^(6+)辐射处理,观察辐射后M1代及M2代兵豆幼苗根尖细胞染色体结构的结果表明,辐射处理后兵豆染色体出现各种畸形,在0~60 Gy辐射范围内,随着辐射剂量的增加,兵豆根尖细胞染色体畸变率明显升高,说明辐射处理能引起兵豆染色体形态异常,诱发变异。

The aims were to study cytological effects and chromosome morphological variation in the root tip cells of M1 and M2 generation,Dry seeds of lentil(Lens culinaris Medic.)were irradiated by penetrating 12C6+ion beams on different doses at room temperature.Accelerated 12C6+ion beams ejected from the terminal of the heavy-ions research facility in Lanzhou.The results show that a variety of deformities of the chromosome after radiation treatment in lentil,with the increase of radiation dose,the chromosomal aberration rate of the root tip cells increased significantly,indicating that the radiation treatment could cause the abnormal chromosome morphology and induce variation between the range of the 0-60 Gy.