电脑辐射对植物减数分裂的影响.docVIP

电脑辐射对植物减数分裂的影响 莫诗诗 叶柳青 陈景秀 【摘要】 电脑工作的时候，显示器及主机均会使其周围存在电磁辐射，包括 X 射线、紫外线、可见光、红外线和特高频、高频、中频及极低频电磁场，也有静电场。减数分裂对环境中的各项因素的反应非常敏感。本实验以韭菜花为模型，通过观察分别在电脑主机、显示器的辐射下韭菜花减数分裂的时候产生的变化，计算其微核率，分析电脑主机及显示器的危害作用的大小。对电脑各部位辐射的危害作用作一个初步的估计。发现电脑辐射对减数分裂的影响是比较明显的，其中显示器辐射导致微核率的提高是主机的两倍。同时，我们还发现保留了总苞的韭菜花辐射后产生的微核率大大降低。表明总苞能挡住很大的一部分辐射，起到保护作用，同时说明了电脑操作者若能做好防护的话能减少电脑辐射对身体的影响。 【关键词】 主机 显示器 辐射 减数分裂 微核 Investigation Report on the Influence Of Computer Radiation to the Plant Meiosis Mo Shishi, Ye liuqing, Chen Jingxiu (Biotechnology 2002, School of Life Science , Sun Yat-sen Uneversity, Guangzhou 510275, China ) 【 Abstract 】 There is radiation around the display and the mainframe when the computer is working, including X-ray, ultraviolet ray, visible light, infrared ray, and super high frequency, high frequency, middle frequency, and extremely low frequency electromagnetic field, as well as electrostatic field. Meiosis is sensitive to many factors in the environment. We carried out the experiment by using the flowers of Chinese chive, observing their changes in meiosis after being under the radiation of the mainframe or the display, calculating their rates of micronucleus, and then analyzed the harm extent of computer mainframe and display. We found that the radiation of computer could affected the meiosis obviously, especially that of display. Simultaneously, we also found that micronucleus in the flowers with involucrum reduced rapidly. That meant the involucrum could hold up some radiation. So computer operators can reduce the influence of radiation by doing proper protection. 【 Key Words 】 mainframe, display, radiation, meiosis, micronucleus 1 、前言 电磁辐射超标是电磁兼容性中的辐射骚扰、传导骚扰指标超标，这种骚扰不仅干扰其他电器正常工作，且对人体有累积效应，给长期暴露在强电磁辐射下的人体带来伤害，经证实，电磁辐射致使人体内的一些生理活性物质受到影响，对大脑中枢神经系统造成伤害，具体表现为头晕头痛、易疲劳嗜睡或注意力不集中、失眠等。另外，某些病症的致病原因也与电磁辐射有关，如白内障、脑肿瘤、小儿白血病、流产、乳癌、痴呆、健忘、帕金森氏症、心悸、心律失常等。 ? 表 1 、国家卫生局对环境电磁波许辐射强度分级标表 波长 单位 容许场强 一级 ( 安全区 ) 二级 ( 中间区 ) 长、中、短波 V ／ m 〈 10 〈 25 超短波 V ／ m 〈 5 〈 12 微波 μW ／ cm 2 〈