The citrus genome -- The origin of citrus -- Domestication and history -- Citrus taxonomy -- Commercial scion varieties -- Citrus rootstocks -- Traditional breeding -- Genomic breeding -- Citrus biotechnology -- Vegetable growth -- Flowering and fruit set -- Fruit growth and development -- Citrus in changing environments -- Salinity and water deficit -- Soil and nutrition interactions -- Citrus pests in a global world -- Diseases caused by fungi and oomycetes -- Bacterial pathogens of citrus : citrus canker, citrus variegated chlorosis and huanglongbing -- Citrus viruses and viroids -- Horticultural practices -- Postharvest technology of citrus fruits -- Chemistry of citrus flavor -- Global economics and marketing of citrus products -- Citrus and health.