| 摘要: |
| 近几年来，有关X射线对海带配子体和幼孢子体的影响以及Co60γ射线对海带配子体的影响都有过报导。本实验在于观察Co60γ射线对海带幼孢子体的影响和目前条件下可能看到的作用机制。正如Gray(1959)所指出：尽管X射线对活细胞的作用问题已有60多年的研究，但对有关的机制还是所知极少。本实验所能探讨的只是一些可见的、也就是属于细胞水平的机制。 |
| 关键词: Co60γ射线 海带幼孢子体 |
| 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269号 |
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| Effects of Co60γ-Radiations on the Young Sporophytes of Laminaria japonica Aresch |
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T. C. FANG1,2, J. J. LI3, T. J. Chen1
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1.Shantung College of Oceanology;2.Institute of Oceanology, Academia of Sinica;3.Institute of Oceanology, Academia of Scinica
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| Abstract: |
| Very young sporophytes of Laminaria were used in this experiment. From the present experiment the following observations were made:
1. The high dose of 10,000 r of Co60γ-radiations did not cause any immediate death of the sporophyte cells. Death occurred as usual in the next day after γ－irradiation.
2. The young sporophytes which are diploids seem to possess higher radio-resistance to Co60γ-radiations than do the female gametophytes which are haploids.
3. Both the lower and higher doses of Co60γ-radiations all showed some stimulating effects on the young sporophytes. The lower doses seem to have quickened the rate of cell division, while the higher dose of 10,000 r seems to have made the cell swell in the cytoplasm and this eventually caused the death of the sporophytes. |
| Key words: Co60γ-Radiations Laminaria japonica |
