The above mentioned procedure is summarized in Fig. 5.
　Though only one plantlet had been obtained from one meristem by the conventional meristem culture, more than 50 plantlets can be secured in succession from one meristem by this meristem callus method. The virus disease can be entirely eliminated from the plantlets raised through the callus.
　From these viewpoints, this method can be expected to serve as a useful technic for the establishment of the virus-free plant production and their distribution systems.