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以豌豆干种子为研究对象,采用252Cf裂变中子源对其辐照。利用蒙特卡罗(Monte Carlo,MCNP)程序分别模拟了中子及γ射线的输运,计算了不同辐照位置样品的中子吸收剂量和γ射线(光子)吸收剂量。研究了辐照后不同吸收剂量引起的生物学效应,与对照组的比较表明:低吸收剂量(0.239-4.330 Gy)的中子辐照豌豆干种子后,M1代豌豆进入花期的时间延迟,微剂量的中子辐照促使M1代豌豆出苗率升高;中子辐照能够促进M1代豌豆苗期分支增多;适当剂量(0.619 Gy)的中子辐照能够显著提高M1代豌豆的收获量。
With pea seeds as the research object, 252Cf fission neutron source was used to irradiate it. The neutron and γ-ray transport were simulated by Monte Carlo (MCNP) program. The neutron absorbed dose and γ-ray (photon) absorbed dose at different irradiation sites were calculated. The biological effects of different absorbed doses after irradiation were studied. Compared with the control group, the results showed that after the seeds of pea seeds were irradiated with low absorbed dose (0.239-4.330 Gy), the flowering time of M1 generation peas was delayed, Neutron irradiation promoted the emergence of M1 generation pea seedlings; neutron irradiation could promote M1 generation pea seedling branching increased; appropriate dose (0.619 Gy) of neutron irradiation can significantly improve M1 generation pea harvest.