Study on the Insecticidal Activity of Total Flavonoids from Leaves of Platycladus orientalis on Aphis sophoricola Zhang(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Study on the Insecticidal Activity of Total Flavonoids from Leaves of Platycladus orientalis on Aphis sophoricola Zhang

Author(s):: WANG Qing-zhong; WANG Dong-fang; Key Laboratory of Biochemistry and Molecular Biology in University of Shandong Province，College of Bio-engineering and Agriculture，Weifang University，Weifang,Shandong 261061

Keywords:: leaves of Platycladus orientalis; total flavonoids; Aphis sophoricola Zhang; insecticidal activity

Abstract:: The total flavonoids of Platycladus orientalis leaves was extracted with alcohol-water solution by heating to reflux for 2 hours，and the insecticidal activities of extracts were detected against Aphis sophoricola Zhang.The results showed that the total flavonoids of indoor leaf bioassay were toxic to Aphis sophoricola Zhang with LC₅₀ of 13.71 mg/mL.The results of the control efficiency determination experiment in the field indicated that the control efficiency of the total flavonoids was 85.19% against the insect when the concentration of extracts was 30 mg/mL.Therefore，the total flavonoids of Platycladus orientalis leaves had a good insecticidal activity against Aphis sophoricola Zhang.

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Last Update: 2014-08-30