Nematicidal activities of 17 phytochemicals belonging to the monoterpene, sesquiterpene, phenylpropene and alkaloid classes were assessed in vitro and in pot experiments under greenhouse conditions. The results showed that, based on LC₅₀ values, monoterpenes and phenylpropenes were more toxic than sesquiterpenes and alkaloids to second-stage juveniles (J2) of Meloidogyne javanica. α-Terpinene (LC₅₀ = 36.22 mg/L) displayed the highest toxicity against juveniles, followed by α-pinene (LC₅₀ = 47.49 mg/L), nerolidol (LC₅₀ = 53.60 mg/L) and eugenol (LC₅₀ = 73.45 mg/L). Furthermore, α-pinene, α-terpinene and nerolidol were highly effective in reducing egg hatching of M. javanica after 7 days of treatment displaying IC₅₀ values of 43.28, 49.26 and 50.39 mg/L, respectively. The three compounds showed nematicidal activity against eggs comparable to a reference nematicide, oxamyl. In pot experiment with eggplant, α-pinene, α-terpinene, eugenol and nerolidol induced remarkable reduction in number of galls, egg-masses and eggs per plant, and number of second stage juveniles in soil at concentration of 500 mg/L. Also, these compounds increased the growth parameters of eggplant compared with infected control. α-Terpinene gave nematode control and plant growth similar to oxamyl. The results suggest that these four compounds could be applied for M. javanica management.

在温室条件下的体外和盆栽实验中评估了属于单萜，倍半萜，苯基丙烯和生物碱类的17种植物化学物质的杀线虫活性。结果表明，基于LC ₅₀值，单萜类和苯基丙烯类比倍半萜类和生物碱对爪哇甲虫的第二级幼虫（J2）更具毒性。α-松油烯（LC ₅₀  = 36.22 mg / L）对幼虫表现出最高的毒性，其次是α- ne烯（LC ₅₀  = 47.49 mg / L），nerolidol（LC ₅₀  = 53.60 mg / L）和丁子香酚（LC ₅₀  = 73.45 mg / L）。此外，α- pine烯，α处理7天后，β-松油烯和nerolidol对减少爪哇毛虫的卵孵化非常有效，IC ₅₀值分别为43.28、49.26和50.39 mg / L。与参考杀线虫剂乙酰胺相比，这三种化合物对鸡蛋显示出杀线虫活性。在茄子的盆栽试验中，浓度为500 mg / L时，α-pine烯，α-萜品烯，丁子香酚和橙花醇能显着减少每株植物的胆，卵团和卵的数量以及第二阶段幼虫的数量。而且，与感染的对照相比，这些化合物增加了茄子的生长参数。α-松油烯具有类似于草酰胺的线虫控制能力和植物生长能力。结果表明，这四种化合物均可用于爪哇木兰。 管理。