新型杀菌剂苯并咪唑喹啉铜对辣椒疫霉的抑菌活性

Effective of Carbendazim-oxine-copper,a novel fungicide against Phytophthora capsici

[目的]苯并咪唑喹啉铜是多菌灵和喹啉铜螯合而成的新杀菌剂。为明确其应用价值,测定了它对辣椒疫霉的抑菌效果。[方法]分别用生物测定法和盆栽法测定了药剂对辣椒疫霉各发育阶段的离体活性以及活体药效。[结果]苯并咪唑喹啉铜对游动孢子囊形成、萌发以及游动孢子休止孢萌发均有很好的抑制效果,EC50值在0.01～0.2 mg/L之间;活体试验中,200 mg/L苯并咪唑喹啉铜防效达73.46%。[结论]该药剂还具有兼治多种真菌病害的潜力,对合成新农药和治理抗药性风险具有很大价值。

Carbendazim-oxine-copper is a novel chelate of carbendazim and oxine-copper.To clarify its possibility of application,inhibition against Phytophthora capsici Leonian was tested.[Methods]We used bioassay method to identify the inhibitory effect of P.capsici in different development stages in vitro and potted pepper to evaluate the efficacy of carbendazim-oxine-copper in vivo respectively.[Results]Test results in vitro indicated that Carbendazim-oxine-copper had excellent inhibitory effect against sporangium formation,sporangium germination,and zoospore cyst germination of P.capsici,with EC50 values of 0.01-0.2 mg/L.Besides,carbendazim-oxine-copper at 200 mg/L provided 73.46% protective control efficacy against P.capsici in vivo.[Conclusions]carbendazim-oxine-copper has enormous potential to control a variety of fungal diseases,and therefore has great value to be exploited for the synthesis of new fungicides and resistance management.