| 摘要: |
| 海带配子体和幼孢子体对X射线的敏感性和低剂量X射线照射海带配子体所产生的有利影响，我们曾做了一些观察。由于γ射线与X射线的性质比较相近，我们想了解相似剂量的γ射线对海带配子体是否引起相似的生物学效应，特别是想知道用低剂量γ射线照射海带配子体，能否促进发育？能否促进幼孢子体的生长速度？如果低剂量γ射线有良好的生物学效应，那么，在生产实践上就有积极的意义了。这是和平利用原子能的途径之一。
另一方面，放射敏感性问题最近曾引起若干遣传学家的注意。他们发现某些放射敏感性的差异跟遣传有关。我们已经有遗传性彼此有所差异的若干海带自交种群可以用来研究放射敏感性的遣传差异。 |
| 关键词: 海带 配子体 遗传差异 |
| DOI： |
| 分类号: |
| 基金项目:中国科学院海洋研究所调查研究报告第213号 |
|
| SOME BIOLOGICAL EFFECT OF Co60γ－RADIATIONS AND DIFFERENTIAL RADIOSENSITIVITY IN LAMINARIA JAPONICA ARESCH |
|
T. C. FANG1,2, J. J. LI3, H. J. JIANG1
|
|
1.Shantung College of Oceanology;2.Institute of Oceanology, Academia of Sinica;3.Institute of Oceanology, Academia of Scinica
|
| Abstract: |
| Two different populations of gametophytes of L. japonica were used to study the biological effect of Co60γ－radiations and the different radiosensitivity. They were derived from different lines of sporophyte after four years of inbreeding. One population came from a mature sporophyte characterized with no margin, while the other population from one with very narrow margin.
It was observed that the biological effect of Co60γ-radiations was comparable to that of X-radiations. High doses of radiations killed many gametophytes. The gametophytes derived from the sporophyte without margin were found to be much more sensitive to Co60γ-radiations than those from the sporophyte with very narrow margin. It was suspected that the difference in the observed radiosensitivity was due to differences in heredity. |
| Key words: radiosensitivity gametophytes LAMINARIA JAPONICA |
