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利用~(252)Cf源发射的中子对胡麻(Linum usitatissimum L.)干种子进行辐射,研究了在不同中子吸收剂量情况下,胡麻M_1和M_2代生长期性状产生的辐射生物效应。结果表明,辐射生物效应与中子剂量之间存在着关联,较低剂量(2.55 Gy和4.33 Gy)的中子辐射对M_1代胡麻苗期株高的生长有显著的促进作用;低剂量(0.24-4.33 Gy)的中子辐射具有促使M_1和M_2代胡麻侧芽发生的效应,且存在最佳促进剂量。胡麻M_1和M_2代所产生的辐射生物效应之间存在着差异,较低剂量(1.12-4.33 Gy)的中子辐射可以促进M_1代胡麻出苗而抑制M_2代胡麻出苗,M_1、M_2代胡麻的株高和分枝的发育均出现了相似的促进效应,但M_2代比M_1代有所减弱。
The radionuclides of Linum usitatissimum L. seeds were irradiated by ~ (252) Cf neutron to study the radiobiological effects of the growth of flax M_1 and M_2 generation under different neutron absorbed doses. The results showed that there was a correlation between the biological effect of radiation and the neutron dose. The radiation doses of low dose (2.55 Gy and 4.33 Gy) significantly promoted the plant height growth of M_1 generation flax seedlings at low dose (0.24 -4.33 Gy) of neutron radiation has the effect of promoting lateral buds of M_1 and M_2 generation flax, and there is the best promotion dose. There was a difference between the radiation biological effects produced by flaxseed M_1 and M_2 generations. Low dose (1.12-4.33 Gy) of neutron radiation could promote the emergence of flaxseed M_1 and inhibit the emergence of flaxseed of M_2, while those of M_1 and M_2 flax A similar promotion effect appeared in both high and branch development, but the M 2 generation was weaker than the M 1 generation.