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Among fruit species apricot is characterized by a large extension over the last 20 years in Western Europe and worldwide.But,that development,by comparison with others,such as apple and peach,is hampered by strong weaknesses mainly related to climatic factors,susceptibility to pests and diseases in relation with the death of the plant or the destruction of the production.Sharka disease,due to Plum Pox Virus infection,belongs to that set of major large spread disease.