低能离子注入小麦种子胚内的射程分布

卫增泉; 袁世斌; 颉红梅; 赵力民; 毛淑红

doi:10.11804/NuclPhysRev.20.03.218

低能离子注入小麦种子胚内的射程分布

Range Distribution of Low Energy Ions Implanted into Embryo of Wheat Seed

摘要

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 crosssections. A halfseed was pasted on a metal holder in keeping the crosssection upwards horizontal. Spot analyses were carried out from embryo surface towards depth on the crosssection 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 ionsi...

Abstract: 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 crosssections. A halfseed was pasted on a metal holder in keeping the crosssection upwards horizontal. Spot analyses were carried out from embryo surface towards depth on the crosssection 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 ionsi...

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