Rice blast is the major disease of rice in Chhattisgarh, India and this state of India is known for "Rice bowl". This book illustrates the importance of the disease, historical aspects, genetic aspects, inheritance pattern of blast resistance gene, allelic study of these genes, review work and molecular tagging wok for blast resistance gene in different chapters. This book will serve as a ready reckoner for the students and scientists, who are actively engaged in rice blast research.