摘要
采用110keV56Fe1+离子束垂直注入小麦种胚后,将小麦沿腹面的纵沟掰开,形成剖面,将剖面水平朝上粘贴在金属铜托上,用扫描电镜在剖面上从胚表面向纵深进行点分析,测定不同深度上由Fe元素激发出的特征X射线强度,由此得到了该种离子注入小麦胚内的最大射程约5μm,最可几射程为0.935μm.并对这种低能离子注入作物种子能诱发突变的机理进行了详细讨论.
After embryo of wheat seed was right implanted by 110 keV 56Fe1+ ions, the seed was broken into two parts by hand along its abdomen trench to form two crosssections. A halfseed was pasted on a metal holder in keeping the crosssection upwards horizontal. Spot analyses were carried out from embryo surface towards depth on the crosssection under SEM and the intensity of characteristic X rays induced by electrons in Fe elements of the embryo was measured. From this, the maximum range of the ions in the embryo of wheat seed was obtained about 5 μm and the range with maximum probability was 0.935 μm. Mechanism of mutation induced by the low energy ions implanted into the crop seed is in greater detail discussed.
出处
《原子核物理评论》
CAS
CSCD
北大核心
2003年第3期218-221,共4页
Nuclear Physics Review
基金
国家自然科学基金资助项目(19135022
9975060)
中国科学院重点基金资助项目(KJ952 S1 424)
甘肃省自然科学重点基金资助项目(C34)~~
关键词
低能离子注入
小麦
种子
胚
射程分布
X射线能谱分析
implantation of low energy ion
wheat
embryo
energy analysis of X ray
range distribution
