Ways of controlling potato Y potyvirus and sources of resistance

Potato Y potyvirus us (PVY) is an economically important viral pathogen of potato. PVY infection can cause up to 80 % yield loss in potato production. It occurs in all potato-growing countries. In this study a summary is given of methods of controlling PVY, with specia l regard to the importance of virus-free propagation materials (thermothera py, chemotherapy, meristem growing) and of resistance, the possibilities of protection (protection against vectors, agrotechnical methods), therapy, a nd the results of these methods.