1. The Citrus Genome Fred Gmitter and Jr. 2. The Origin of Citrus Manuel Talon 3. Domestication and History Xiuxin Deng 4. The Genus Citrus Patrick Ollitrault 5. Commercial Scion Varieties Graham Barry 6. Commercial Rootstocks Kim Bowman 7. Traditional Breeding Marco Caruso 8. Genomic Breeding Tokurou Shimizu 9. Biotechnological Approaches Jude William Grosser 10. Vegetative Growth Eduardo Primo and Manuel Agustí 11. Flowering and Fruit Set Manuel Agustí and Eduardo Primo 12. Fruit Growth and Ripening Francisco Tadeo 13. Citrus in changing environments Christopher Vincent 14. Salinity and Water Deficit Jose Manuel Colmenero-Flores 15. Soil and Nutrition Interactions Dirceu Mattos-Jr. 16. Citrus pests in a global World Alberto Urbaneja 17. Fungal Pathogens Liliana Maria Cano 18. Bacterial Pathogens Dean Gabriel, Timothy R. Gottwald, Silvio A. Lopes and Nelson A. Wulff 19. Virus and Viroids Changyong Zhou, John da Graça, Juliana Freitas- Astúa, Georgios Vidalakis, Nuria Duran-Vila and Irene Lavagi 20. Culture and Management Fernando Alferez 21. Pre- and Post-Harvest Technologies Lorenzo Zacarias 22. Citrus taste and flavor Yu Wang 23. Marketing, Trade, and Economics Thomas Spreen 24. Citrus and Health Masaya Kato