The present book entitled “Plant Breeding and Genetics” deals with basic principles of plant breeding and genetics and is intended to serve as a text book for undergraduate students of B. Sc. Agriculture/B. Sc. Horticulture/B. Sc. Forestry/B. Sc. Fisheries/B. V. Sc. and A. H./B. Sc. Biotechnology/B. Sc. Biology. Since several chapters especially those dealing with statistical and biotechnological applications overlap considerably in plant breeding and genetics, this combined book will serve the needs of students undergoing a course in undergraduate genetics and/or plant breeding. Each chapter starts with definition and explanation of key terms, dwells upon the core issues of the chapter, using solved numerical problems and illustrations, wherever needed. At the end, there is a comprehensive glossary which is updated with modern developments. The book will be quite handy to UG students and even PG students will find it useful for understanding fundamentals of plant breeding and genetics