| 英文摘要 |
From the study of ''Reciprocal translocations induced by X-rays and thermoneutrons in wild sorghum'' (Wu and Pi, 1968), we know that thermal neutrons produce no serious effect on seed viability, but have a significant effect on inducing chromosome aberrations, and we also know that the exposure at 3.5×10^13 n/cm2 is the most appropriate one for thermal neutron treatment, at which most chromosome aberrations are induced and the least damage to plants occur. Based on this information, the author treated S. purpureo-sericeum seeds with the proper dosages of thermal neutrons 3.5×10^13 n/cm2 and 4.0×10^13 n/cm2 respectively in- the present experiment, and expected to induce more types of chromosome aberrations and get more gene mutations. No work has previously been done on the effect of thermal neutron flux on seed viability, so the author is presenting the data obtained from his investigation in this paper. |
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