Markers based polymorphism in pigeonpea [Cajnus cajan (L).Millsp] is a major contribution to the research field of cytoplasmic-genetic male sterility based hybrid production in pigeonpea [Cajnus cajan (L).Millsp]which is consider as orphan crop. This book provides a vast view on a unique system of hybrid production in pigeonpea i.e. Cytoplasmic geneic male sterility and also confers the information regarding usefulness of molecular markers in identification and GOT of fertility restorer as well as sterility genes. Book cover various protocols of agricultural biotechnology . I trust that this book will fulfil the need of researchers in particularly pulses and agriculture as whole.