| 氮离子束注入与贯穿小麦种子的生物效应初步研究 |
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| 引用本文： | 李文建,卫增泉,颉红梅,李强,韩光武,党秉荣,周光明,杨汉民,汪丽虹,高清祥.氮离子束注入与贯穿小麦种子的生物效应初步研究[J].辐射研究与辐射工艺学报,1995(3). |
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| 作者姓名： | 李文建 卫增泉 颉红梅 李强 韩光武 党秉荣 周光明 杨汉民 汪丽虹 高清祥 |
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| 作者单位： | 中国科学院近代物理研究所，兰州大学生物系 |
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| 基金项目： | 国家自然科学基金,“八五”重点课题 |
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| 摘 要： | 采用４７．９ＭｅＶ／ｕ和２０．４ＭｅＶ／ｕ１４Ｎ（７＋）离子束对小麦种子进行生物学效应研究。结果表明：１）重离子的贯穿和注入对小麦种子的生长势均有明显的抑制作用，剂量越大，抑制作用越强，而且注入作用高于贯穿；２）在种子的根尖细胞中出现的染色体畸变具有多种类型，畸变频率高于对照组１９８～５９２倍，而且注入比贯穿作用强；３）注入和贯穿处理两者同样有明显的诱变作用，可引起ＤＮＡ的损伤和修复
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| 关 键 词： | 氮离子束，注入，贯穿，生长势，损伤和修复，DNA，染色体畸变 |
PRELIMINARY STUDIES ON THE BIOLOGICAL EFFECTS OF WHEAT SEEDS IMPLANTED AND PENETRATED BY NITROGEN ION BEAMS |
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| Li Wenjian, Wei Zengquan, Xie Hongmei, Li Qiang, Han Guangwu,Dang Bingrong, Zhou Guangming.PRELIMINARY STUDIES ON THE BIOLOGICAL EFFECTS OF WHEAT SEEDS IMPLANTED AND PENETRATED BY NITROGEN ION BEAMS[J].Journal of Radiation Research and Radiation Processing,1995(3). |
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| Authors: | Li Wenjian Wei Zengquan Xie Hongmei Li Qiang Han Guangwu Dang Bingrong Zhou Guangming |
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| Abstract: | The biological effects of wheat seeds irradiated by 47.9 MeV/u and 20. 4 MeV/u 14N+7 ion beams were studied respectively .The results showed: (1 )The heavy ions of both penetration and implantation can all significantly inhibit growing power of wheat seeds. The greater dose is, the greater growing power is inhibited, and implantation influence on growing power is stronger than penetration.(2) In root tip cells of irradiated seeds, a great variety of chromosomal aberrations were observed, the aberration frequencics were several hundred times higher than that of the corresponding controls and the implantation surpasses the penetration.(3) The seeds treated by implantation and penetration have same evident effect of mutation and can induce DNA damage and repair. |
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| Keywords: | Nitrogen ion beam Penetration Implantation Growing power Damage and repair DNA Chromosomal aberration |
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