摘要
Since artificial seeds were made initially, there have existed a few problems, suchas searching and making of artificial coats, resistance of artificial seeds tocontamination of microbes when being sowed, the storage of artificial seeds, etc. Sofar, these problems have not been solved satisfactorily. As far as plant somatic em-bryos of artificial seeds are concerned, to enhance the vigor of embryos is the founda-tion for obtaining high-quality artificial seeds and is the key condition for
