Energy-dependent RBE of Neutrons to Induce Micronuclei in Root-tip Cells of Allium cepa Onion Irradiated as Dry Dormant Seeds and Seedlings
スポンサーリンク
概要
- 論文の詳細を見る
The relative biological effectiveness (RBE) of various energy neutrons produced from a Schenkel-type accelerator at the Research Institute for Radiation Biology and Medicine, Hiroshima University (HIRRAC), compared with ^<60>Co gamma-ray radiation was determined. The neutron radiations and gamma-ray radiation produced good linear changes in the frequency of micronuclei induced in the root-tip cells of Allium cepa onion irradiated as dry dormant seeds (seed assay) and seedlings (seedling assay) with varying radiation doses. Therefore the RBE for radiation-induced micronuclei can be calculated as the ratio of the slopes of the fitted linear dose response for the neutron radiations and the ^<60>Co gamma-ray radiation. The RBE values by seed assay and seedling assay decreased to 174 ± 7, from 216 ± 9, and to 31.4 ± 1.0, from 45.3 ± 1.3 (one standard error), respectively, when neutron energies increased to 1.0 MeV, from 0.2 MeV, in the present study. Furthermore, the ratio of the micronucleus induction rates of seed assay to seedling assay by gammaray radiation was much lower than that by neutron radiations.
- 日本放射線影響学会の論文
著者
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HOSHI Masaharu
International Radiation Information Center, Research Institute for Radiation Biology and Medicine, H
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ENDO Satoru
Quantum Energy Applications, Graduated School of Engineering, Hiroshima University
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Ishikawa Masayori
広島大学原爆放射線医科学研究所 分子発がん制御研究分野
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石川 正純
北海道大学
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石川 正純
東京大学・原子力研究総合センター
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Ishikawa Masayori
Department Of Medical Physics Hokkaido University Hospital
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石川 正純
東京大学大学院工学系研究科
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遠藤 暁
Mechanical System Engineering Graduate School Of Engineering Hiroshima University
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Endo Satoru
Department Of Biochemistry Cancer Institute Okayama University Medical School
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Ikeda Hiroshi
Department Of Radiation Oncology National Cancer Center Hospital East
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FUJIKAWA Kazuo
Department of Life Science, Faculty of Science and Technology, Kinki University
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Endo Satoru
Research Institute Of Radiation Biology And Medicine Hiroshima University
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Endo Satoru
Quant. Energ. Applic. Grad. Sch. Eng. Hiroshima Univ.
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Fujikawa K
Department Of Life Science Faculty Of Science And Technology Kinki University
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Fujikawa K
Kinki Univ. Higashi‐osaka Jpn
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Fujikawa K
Faculty Of Science And Engineering Kinki University
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Zhang Wen
Department Of Information And Computer Sciences Saitama University
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IKEDA Hideo
Department of Molecular Biology, Institute of Medical Science, The University of Tokyo, Tokyo Japan
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Endo Satoru
Div. Environ. Biol. Res. Inst. Rad. Biol. And Med. Hiroshima University
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FUJIKAWA Kazuo
Laboratory of Radiation Biology, Atomic Energy Research Institute, Kinki University
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ZHANG WENYI
International Radiation Information Center, Research Institute for Radiation Biology and Medicine, H
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ISHIKAWA MASAYORI
International Radiation Information Center, Research Institute for Radiation Biology and Medicine, H
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MOHTAKI EGU
Department of Environmetrics and Biometrics, Research Institute for Radiation Biology and Medicine,
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Zhang Wenyi
Department Of Radiation Biophysics Research Institute For Radiation Biology And Medicine Hiroshima U
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Mohtaki Egu
Department Of Environmetrics And Biometrics Research Institute For Radiation Biology And Medicine Hi
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Itsukaichi Hiromi
Radiation Hazards Research Groupe Natl. Inst. Radiat Sci.
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Ikeda Hideo
Department Of Applied Physics Osaka University
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Hoshi Masaharu
International Radiation Information Center Hiroshima University
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Fujikawa Kazuo
Laboratory Of Radiation Biology Atomic Energy Research Institute Kinki University
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