The study of genes, heredity and genetic variation in plants is known as plant genetics. It is the sub-field of biology and botany. The field aims to understand the patterns through which traits are passed down by parents to offsprings. The Deoxyribonucleic acids (DNA) is the nucleic acid which carries long-term storage of information and contains the information needed to make other components of cell. The Deoxyribonucleic acids (DNA) in plants carry the genetic information of the plants which are called genes. The field focuses on understanding the role that different genes perform within a genome. This information is further used for plant breeding and manipulation of plant genes to produce various other desired genotypes. This book provides comprehensive insights into the field of plant genetics. It is compiled in such a manner, that it will provide an in-depth knowledge about the theory and practice of this discipline. As this field is emerging at a rapid pace, the contents of this book will help the readers understand the modern applications of the subject.