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During a survey conducted in the grapevine orchards of Himachal Pradesh, variety of symptoms ranging from leaf yellowing, vein greening, reduced leaf size, downward rolling/cup shaped leaves to reduced fruit bearing were observed. Symptomatic leaf samples were collected and analyzed by serological (DAS-ELISA) and molecular methods (RT-PCR, PCR) for viruses and phytoplasma known worldwide on grapevine...
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