文献类型： 外文期刊

作者： Zhang, Yong-qiang ¹ ; Yang, Zhen-guo ¹ ; Ding, Wei ¹ ; Luo, Jin-Xiang ¹ ;

作者机构： 1.Southwest Univ, Coll Plant Protect, 216 Tiansheng Rd, Chongqing 400716, Peoples R China

2.Yunnan Acad Agr Sci, Inst Sericulture & Apiculture, Mengzi 661100, Peoples R China

关键词： bisdemethoxycurcumin;scopoletin;synergism;Tetranychus cinnabarinus

期刊名称：ZEITSCHRIFT FUR NATURFORSCHUNG SECTION C-A JOURNAL OF BIOSCIENCES （ 影响因子：1.649； 五年影响因子：1.66 ）

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收录情况： SCI

摘要： The study aimed to investigate the synergistic activity of scopoletin and bisdemethoxycurcumin (BDMC) against the carmine spider mite Tetranychus cinnabarinus. The acaricidal activities of mixtures of scopoletin and BDMC against T. cinnabarinus female adults were measured via slide dipping and leaf disc dipping. A mathematical model was established by SPSS software. Bioassays for multiple effects including contact, ovicidal, cowpea root intake, repellency and oviposition inhibitory activity were carried out. The optimal mass ratio of the mixture of scopoletin and BDMC (at their respective LC50), the median lethal concentration (LC50) and the co-toxicity coefficient were 7: 6, 0.19 mg/mL and 129, respectively. LC50 values of contact activities of the mixture at optimal ratio against adults, nymphs, larvae, and eggs were 0.19, 0.18, 0.06, and 1.52 mg/mL, respectively. LC50 values of cowpea root intake activity against adults and nymphs were 5.62 and 6.52 mg/mL, respectively. The highest repellent rates against adults and nymphs were 69.5% and 72.5%, respectively. The mixture of scopoletin and BDMC at the optimal mass ratio possessed strong acaricidal activity against T. cinnabarinus at various developmental stages.