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Majority of the apple trees are known to be infected by two latent viruses, Apple stem grooving virus (ASGV) and Apple stem pitting virus (ASPV). The importance of ASGV and ASPV is due to their non expression of symptoms, worldwide occurrence and wide host range on pome and stone fruits. Due to their latent nature in apple, early and rapid diagnostics plays important role for production of virus free...
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