Tristeza caused by Citrus tristeza virus (CTV) is an economically important citrus virus disease, which is widely spread in most citrus-growing areas by grafting and aphid.

• 由柑桔衰退病毒(Citrus tristeza virus，CTV)引起的柑桔衰退病是一种具有经济重要性的柑桔病毒病害，主要通过嫁接和蚜虫在世界各柑桔产区广泛传播流行。