Citrus is one of the most important commercial and nutritional fruit crops in the world, hence it needs to be improved to cater to the diverse needs of consumers and plant breeders. The present book is a compendium of eighteen chapters written by leading experts who have made significant contributions to citrus biotechnology. This book summarizes the researches made so far in citrus biotechnology. This book is an asset for researchers, students, scientists, teachers involved in horticulture, botany, plant sciences, food science, biotechnology, citrus production and citrus research.