低能离子束注入不同蔬菜种子后的剂量效应  

The Dose Effect of Vegetable Seeds Induced by low Energy Ion-beam

作　　者：梁秋霞[1] 黄群策[1] 曹刚强[2] 应芳卿[3] 吴小波[3] 

机构地区：[1]郑州大学河南省离子束生物工程重点实验室,450052 [2]郑州大学生物工程系,450001 [3]河南省郑州市蔬菜研究所,450000

出　　处：《北方园艺》2007年第5期1-4,共4页Northern Horticulture

基　　金：国家"十五"科技攻关资助项目(2001BA302B-03)

摘　　要：以能量为30KeV的氮离子束为诱变源,采用不同的离子注入剂量对6种蔬菜19个品种进行处理后,对其种子发芽率与离子注入剂量效应之间的关系进行了研究。结果表明:低能离子束所导致的生物学效应因不同的蔬菜种类而表现出一定的差异,其离子注入剂量与种子发芽率的关系总趋势呈现出先降后升再降的“马鞍型”曲线,同时,由于不同蔬菜品种的基因型存在着明显的差异,有的品种表现为先升后降再升高或者再继续下降,试验材料在受到离子注入后总会表现出种子发芽率的一个升高的趋势点。多数蔬菜品种的发芽率随着注入离子剂量的提高而呈现出波浪状变化,在发芽率曲线的波谷(即发芽率最低点),后代群体内发生变异的频率最高。In this study, the relations of the germination percentage of different vegetable and different implanting dose of N＋ ion beam were studied with 30 KeV energy. Results indicated that there was different in effects of low ion beam because of different vegetable. To some degree, it took on the graph of ＂the type of saddle＂ ,in relation of dose effects and germination percentage, which took on descending and rising and descending. At the same time, some varieties indicated rising and descending and rising or descending again. But there was a point of trend. The percentage germination of the majority of vegetable showed the grape of wave with increasing of low ion-beam irradiation dose. Namely, in the trough, the lowest percentage germination, there had higher variation.

关 键 词：离子束 发芽率 剂量 

分 类 号：S63[农业科学—蔬菜学] S604.1[农业科学—园艺学]