In latent infection of HLBB, only 1.9% healthy-looking pummelos and lemons were infected by HLBB.In general, HLBB-infection was closely correlated with yellowing symptoms.

• 而看似健康之各品种柑橘株仅1.；9%25受黄龙病菌潜伏感染，并只在文旦(5%25)与柠檬株(6