Most "Zhefu" varieties were obtained directly or indirectly from mutants obtained after irradiation of seeds. In current breeding programmes radiation induced mutations are combined with in vitro techniques such as young panicle culture, embryo culture, anther culture and isolated microspore culture. More recently, ion implantation, election beam implantation and space irradiation were also actively applied. For example. 'Zhefu Lian Zhu Yu Xian'. a promising mutant line of very good quality, induced from variety 'Hu Nan Ruan Ming' with ion implantation, has been widely planted and shown to be well adapted to rice production areas in many provinces.
Most "Zhefu" varieties were obtained directly or indirectly from mutants obtained after irradiation of seeds. In current breeding programmes radiation induced mutations are combined with in vitro techniques such as young panicle culture, embryo culture, anther culture and isolated microspore culture. More recently, ion implantation, election beam implantation and space irradiation were also actively applied. For example. 'Zhefu Lian Zhu Yu Xian'. a promising mutant line of very good quality, induced from variety 'Hu Nan Ruan Ming' with ion implantation, has been widely planted and shown to be well adapted to rice production areas in many provinces.
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