| γ辐照对吸胀大麦种胚DNA非预定合成与复制合成的影响 |
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| 引用本文： | 赵玉芳,凌备备,林晓霞.γ辐照对吸胀大麦种胚DNA非预定合成与复制合成的影响[J].核农学报,1995,9(2):0-0. |
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| 作者姓名： | 赵玉芳 凌备备 林晓霞 |
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| 作者单位： | 浙江农业大学核农所应用生物物理研究室 |
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| 摘 要： | 本研究了γ辐照对高活力离体大麦（Ｈｏｒｄｅｕｍ ｖｕｌｇａｒｅＬ．）种胚吸胀过程中ＤＮＡ合成活性的影响。结果表明，ＤＮＡ复制合成有一明显的起动阶段，约始于吸胀１１ｈ，２８６Ｇｙγ辐照使其推迟４ｈ。当剂量由小变大时，γ辐照对ＤＮＡ非预定合成率的影响，由促进转化成抑制，对ＤＮＡ复制合成率的影响，则在不同程度上皆属抑制。
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| 关 键 词： | 大麦胚 DNA 非预定合线 复制合成 γ辐照 |
| 收稿时间： | 2009-12-31 |
| 修稿时间： | 2009-12-31 |
-RAY IRRADIATION EFFECTS ON DAN’S UNSCHEDULED SYNTHESIS AND REPLICATION OF BAARLEY EMBRYOS DURING THEIR IMBIBITION |
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| Abstract: | A study of irradiation effects on DNA synthesis activities of barley embryos(in vitro)with high vitality during their imbibition was carried out.There was an apparent initiationstage of DNA’s replication synthesis of the harley embryos started from llth hour since theirimbibition. The DNA’s replication synthesis was delayed for about 4 hours under 286Gy ofγ-ray irradiation. The acceleration effects on unscheduled DNA’s synthesis was changed intorestraint ones as γ doses increased,while the erfects on DNA’s repllcation synthesis were allinhibited at different levels. |
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| Keywords: | barley embryo imbition DNA synthesis initiation unscheduled DNA synthesis DNA replication syntheis γirradiation |
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