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Study on resistance of Plutella xylostella in different areas in Hunan Province to insecticides

Wang Qiu

Open publisher page 1 citations

Abstract

Insects from two populations of Plutella xylostella (L.) were collected,one from Changsha (CS-Population) and one from Huaihua (HH-Population) in Hunan Province.The toxicity of 10 insecticides to insects from the two populations was tested by the leaf dipping method in the laboratory.The results suggest that diamondback moth populations in Changsha and Huaihua districts are relatively sensitive to Diafenthiuron and Bacillus thuringiensis (resistance ratio 3) and that the Changsha population has developed the highest levels of resistance to Beta-cypermethrin (resistance ratio of 33.58).The relative toxicity ratio of the CS-and HH-Populations to insecticides ranged from 1.20 to 2.59,with the highest values being recorded for Padan and the lowest for Spinosad.

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What this paper is about

Insects from two populations of Plutella xylostella (L.) were collected,one from Changsha (CS-Population) and one from Huaihua (HH-Population) in Hunan Province.The toxicity of 10 insecticides to insects from the two populations was tested by the leaf dipping method in the laboratory.The results suggest that diamondback moth populations in Changsha and Huaihua districts are relatively sensitive to Diafenthiuron and Bacillus thuringiensis (resistance ratio 3) and that the Changsha population has developed the highest levels of resistance to Beta-cypermethrin (resistance ratio of 33.58).The relative toxicity ratio of the CS-and HH-Populations to insecticides ranged from 1.20 to 2.59,with the highest values being recorded for Padan and the lowest for Spinosad.

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Available abstract

Insects from two populations of Plutella xylostella (L.) were collected,one from Changsha (CS-Population) and one from Huaihua (HH-Population) in Hunan Province.The toxicity of 10 insecticides to insects from the two populations was tested by the leaf dipping method in the laboratory.The results suggest that diamondback moth populations in Changsha and Huaihua districts are relatively sensitive to Diafenthiuron and Bacillus thuringiensis (resistance ratio 3) and that the Changsha population has developed the highest levels of resistance to Beta-cypermethrin (resistance ratio of 33.58).The relative toxicity ratio of the CS-and HH-Populations to insecticides ranged from 1.20 to 2.59,with the highest values being recorded for Padan and the lowest for Spinosad.

Key concepts: Plutella, Diamondback moth, Spinosad, Biology, Cypermethrin, Toxicology, Bacillus thuringiensis, Population

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Study on resistance of Plutella xylostella in different areas in Hunan Province to insecticides — Research Paper | ScholarLens