根结线虫在世界上分布广泛 ,可寄生在包括单子叶植物、双子叶植物、草本植物和木本植物在内的几千种植物上 ,经济为害极大 ,尤其是在热带、亚热带和温带地区根结线虫是主要的食粮作物、蔬菜、果树和观赏植物上的重要病原生物。目前世界上报道的种 (有效种 )有 81个[1 ] ,但南方 Root-knot nematodes are widespread in the world and can parasitize thousands of plants, including monocotyledons, dicotyledons, herbs and woody plants, and are economically devastating, especially in the tropics, subtropics and temperate regions Root-knot nematodes are the major foodborne crops, vegetables, fruit trees and ornamental plants on the important pathogens. Currently reported in the world species (effective species) 81 [1], but the South