The off-springs of autotetraploid rice were treated by low-energy N(superscript +) ion beam, then the mutant seedlings with twin-embryo character was elected.

• 摘要利用低能离子注入技术对同源四倍体水稻进行注入处理，在其后代群体内筛选到具有双胚苗特征的突变单株。