长期继代培养的胚性愈伤组织产生的体细胞胚与合子胚的起源一样,来源于单细胞,所分化的植株是没有嵌合性的。另外能提供遗传性一致且容易处理的较大群体数,不受季节和植物发育阶段的限制,任何时候都可以进行试验,给研究工作提供了很多方便。这是突变育种所需要的一种理想试材。然而要利用这一胚性细胞无性系进行辐射诱变,首先必须研究其辐射敏感性问题,找出致死和半致死剂量,为辐射诱变提供依据。 Somatic embryos derived from long-term subcultured embryogenic callus are the same as those of zygotic embryos, originated from single cells, and the differentiated plants are not chimeric. In addition, it provides a large number of genetically identical and easy-to-handle groups that are not limited by seasonal and vegetative stages and can be tested at any time, providing a lot of convenience for research work. This is an ideal test material for mutation breeding. However, to use this embryogenic cell cloning for radiation mutagenesis, we must first study its radiation sensitivity and find the lethal and semi-lethal doses to provide the basis for radiation mutagenesis.