-65- 

 PTA, and its use is therefore to increase the accuracy of 

 orchid virus diagnosis, while reducing the time needed for 

 scanning at the same time. 



A labor-saving procedure useful for ORSV and CyMV 

 bioassay to indicator plants was also developed. The 

 technique obviates the need for using a mortar and pestle 

 for trituration and thereby is much more convenient to the 

 specific indexing needs for orchid growers, who must index 

 numerous samples. 



