摘要: Citrus is thought to have originated in Southeast Asia and horticulturally desirable clonal selections been clonally cultivated for hundreds of years. While some citrus species nucellar embryony, most cultivation has by propagation ensure that propagated plants the same traits as parent selection. Clonal also avoids juvenility, produce fruit sooner. Because citrus, accumulated a large number viruses; many these viruses are asymptomatic until susceptible rootstock and/or scion encountered. The reported occur will be summarized this review. Methods therapy clean selected clones from reviewed; use quarantine, stock, certification programs control other strategies insect spread viruses, such mild strain cross-protection pest management areas discussed.