摘要
用多极板赝火花放电室产生的５５ｋｅＶ纳秒强脉冲电子束与Ａｒ＋离子束及ＨＩＲ－ＦＬ装置上加速的７ＭｅＶ１６Ｏ６＋离子束辐照枸杞种子，测定种子萌发早期种胚细胞中的非按期ＤＮＡ合成过程，比较３种不同处理方法的辐照效果。结果发现，３种处理种子中，虽然都有非按期ＤＮＡ合成过程，但是，脉冲电子束及Ａｒ＋离子束辐照所造成的ＤＮＡ损伤程度大于１６Ｏ６＋离子，产生这种现象的原因可能与辐照过程中所选用的束流强度有关。
Seeds of Lycium barbarum L. were irradiated by 55 keV strong nanosecond pulse electronbeam,Ar+ion beam and 7 MeV16O6+ion beam,Unscheduled DNA synthesis during germina-tion of three kinds of seed were caused.In seeds irradiated by 55 keV pulse electron beamand Ar+ion beam, DNA damaged degree was greater than those irradiated by16O6+ion beam.DNA damaged degree was interrelated with beam strenth.
出处
《核农学报》
CSCD
1995年第2期91-94,共4页
Journal of Nuclear Agricultural Sciences
基金
国家和甘肃省科学基金
关键词
枸杞
电子脉冲
离子脉冲
种子
辐照
Lycium barbarum L.
pulse electron beam
ion beam
heavy ion
un-scheduled DNA synthesis
