This book presents results of a study of the impacts of international maize breeding research in seven developing countries of Asia (China, India, Indonesia, Nepal, the Philippines, Thailand, and Vietnam). It provides comprehensive, updated documentation of the status of Asia’s national maize seed industries, including information on the roles of the public and private sectors in maize R&D, descriptions of the germplasm products developed by public and private breeding programs, data on the extent of farmers’ adoption of modern maize varieties, and analysis of varietal adoption patterns and trends. Information on emerging trends in maize research and maize seed industries is also provided. An introductory chapter on the maize economy of Asia is followed by a chapter synthesizing results of the study for Asia as a whole. More detailed, country-level studies are presented in the remaining six chapters.