The Genus Citrus presents the enormous amount of new knowledge that has been generated in recent years on practically all topics relating to citrus. Beginning with an overview of the fundamental principles and understanding of citrus biology and behavior, the book provides a comprehensive view, from evolution, to current market importance. Reporting on insights supported by the elucidation of the citrus genome sequence, it presents groundbreaking theories and fills in knowledge gaps. Because citrus is among the most difficult plants to improve through traditional breeding, citrus researchers, institutions and industries have to quickly learn to adapt to these new developments, knowledge and technologies.