This book is a comprehensive up-to-date treatise that includes information on virus-, viroid- and phytoplasma-induced potato diseases. The chapters of this book were written by internationallywell-known experts and include novel techniques of detection, virus isolation, transmission and epidemiology of the pathogens, as well as their control by rapid propagation of the virus-tested clones, breeding for resistance by conventional and biotechnological methods and implementation of certification schemes. Also included are chapters on the botanical characteristics and economic importance of the potato, main cultivars, historical perspectives and emerging viruses in relation to control procedures and regulations. This book will be of major value to all those interested in potatoes - researchers and students, general practitioners, seed potato growers, tissue culture laboratories, inspection services and regulatory authorities; and should attract audiences from all potato growing areas: US, Europe, South America, Russia, India and China.