This book is the first attempt for in-depth compilation of current knowledge on cisgenic crops and their potential prospects as a sustainable substitute for the controversial genetically modified crops. Innovative methodologies for the development of cisgenic crops for disease resistance, improved nutritional contents, suitability for organic farming, survival under climate change, and their role in conservation of plant genetic resources have been highlighted. Combined with molecular markers and genome editing, an advanced approach for crop improvement is reported. The book has 14 chapters authored by globally leading experts on the subject. This book is useful to the students, teachers, researchers and policy planners working across the disciplines of classical plant breeding up to the recent genetically modified and genome edited crops.