摘要
研究了氮离子注入与叠氮化钠处理水稻种子的诱变效应。结果表明：氮离子注入与叠氮化钠处理相比，Ｍ＿１代生理损伤轻，诱发的Ｍ＿２代株高突变频率较高，而叶绿素缺失和抽穗期突变频率则较低。以诱变效率来比较，氮离子注入对叶绿素缺失突变的诱变效率低于叠氮化钠处理，而对株高和抽穗期突变的诱变效率则高于叠氮化钠处理。上述研究结果说明氮离子注入可以作为一种新的诱变技术用于水稻品种改良实践。
The mutagenic effects of nitrogen ion implantation and sodium azide in rice(Oryza sativa L.)were studied. As compared with the treatment of sodium azide,ion implantation caused less physiological damage in the M_1 generation,lower mutation frequencies of chlorophyll deficien-cy and heading date but higher frequency of plant height in the M_2 generation, On the other hand,the mutation induction efficiency of nitrogen ion implantation for chlorophyll deficiency was lower than that of sodium azide treatment,while those of heading date and plant height were rnuch higher than those of sodium azide. The results showed that nitrogen ion implantation could be used as a new source for mutation induction in rice breeding.
基金
国家计委"八五"攻关
关键词
氮离子
叠氮化钠
诱变效应
水稻
nitrogen ion
sodium azide
mutagenic effects
rice
