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Chinese Agricultural Science Bulletin ›› 2024, Vol. 40 ›› Issue (26): 98-102.doi: 10.11924/j.issn.1000-6850.casb2024-0241

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Study on Biological Activity of Ethanol Crude Extract of Rumex acetosa L. Against Three Pests

CHEN Yani1(), LI Zhuoli1,2, Pan Xiali1, ZHANG Jiayi1, ZHANG Ye1, ZHANG Lixiang1   

  1. 1 College of Modern Agriculture and Ecological Environment, Heilongjiang University, Harbin 150080
    2 School of Construction, Guangdong Technology College, Zhaoqing, Guangdong 526070
  • Received:2024-04-07 Revised:2024-06-13 Online:2024-09-15 Published:2024-09-11

Abstract:

The aim of the experiment was to investigate the insecticidal activity of ethanol extract of Rumex acetosa L. against three common pests (Callosobruchus chinensis, Sitophilus oryzae, Plutella xylostella), in order to provide a theoretical basis for the subsequent study of the mechanism of R. acetosa insecticidal. The crude extract of R. acetosa with different concentrations was used as the test liquid, and the three pests were tested by repellent and antifeedant methods, respectively. The results showed that the best repellent concentrations of R. acetosa crude extract against C. chinensis and S. oryzae were 30 mg/mL and 50 mg/mL, respectively. For the 2nd instars of P. xylostella, the concentration of 30 mg/mL to 80 mg/mL had a remarkable anti-feeding effect, and the anti-feeding rate could reach more than 84%. Therefore, the crude extract of R. acetosa is expected to be an effective pest repellent and antifeedant, which is worthy of further study.

Key words: Rumex acetosa L., crude extract, Rumex acetosa ethanol extract, repellent activity, antifeedant activity, insecticidal activity, Callosobruchus chinensis, Sitophilus oryzae, Plutella xylostella.