Space Mutation Technique and Its Application in China's Ornamental Plant Breeding

On the basis of the research of microgravity environment,space radiation on bio sample mutagenesis,the theoretical basis of hi tech breeding with space mutation technique is discussed.The application of space mutation technique in China's crop and flower new variety breeding is reviewed and the nondirective superiority of space mutation breeding and the possibility of successful space mutation breeding are discussed.A prospect for the application of space mutation breeding of flower in the future is described.