I wonder if it is possible to index viruses in plants in in vitro condition without useing indicator plants (I mean the amount of viruses is not too low)? Maybe somebody have any experience with this subject?
As I understood from your question, you’d like to learn to index viruses in one plant or in one kind of plant. If it is, it looks not possible. Indexing means classification or categorization in general. It means confirmation of virus or viruses according to established symptoms on very kind of woody or herbaceous test plants (indicators) or positive results in varying serological tests etc. in plant virology. I hope it is clear for you.