Viruses of Potatoes and Seed-Potato production

1. Plant virology and potato virus Part I Characterization and identification of potato viruses and viroids; 2. Purification; 3. Physical and chemical properties; 4. Serology; 5.Biological properties Part.2 Virus, Viroids, mycoplasmas and diseases with a virus like aetiology; 6. Survey of properties and symptoms Part 3 Viruses and potatoes; 7 Virus translocation and mature plant resistance in potato plants; 8. Spread of viruses in potato crops; 9. Yield reduction in relation to virus infection; 10. Therapy of individual plants; 11. Breeding of resistance; 12. Control of virus spread Part. 4 Production of seed potatoes; 13. Growing seed potatoes; 14. Inspection and grading.