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Assessment of insecticides and Cry2AB toxin resistance development in Karnataka population of Plutella xylostella (Linn.)
- Source :
- Journal of Applied and Natural Science. 8:1380-1387
- Publication Year :
- 2016
- Publisher :
- ANSF Publications, 2016.
-
Abstract
- Insecticidal resistance studies against third instar larvae of DBM (Plutella xylostella L.) were carried out to know the rate of development of resistance from F1 to F3 generations in Karnataka population. The third instar larvae obtained from field were subjected to bioassay studies with tested against acephate, cypermethrin, spinosad, cartap hydrochloride and Cry2Ab toxin using leaf dip method to calculate LC50 values. The LC50 values of the insecticides were further used to quantify the resistance in P. xylostella of parental generation (F0) from Karnataka field population. The survivals from F0 generation were reared to next generation (F1). Resistance development studies was assessed from F1 to F3 generation with third instar larvae in every generation with a concentration that caused 80.00 % mortality for all the test insecticides and Cry2Ab toxin. Results revealed that ((0.17 folds) no resistance was developed against acephate in F3 generation. In case of cypermethrin 2.33 folds. Resistance studies further revealed that 1.50 folds resistance was developed against spinosad, 2.28 folds against cartap hydrochloride and Cry2Ab toxin 1.49 folds resistance was recorded in F3 generation. The rate of development of resistance from F1 to F3 generations increased in all the test insecticides and Cry toxin, except against acephate in Karnataka population. This data will be useful in the development of insecticide resistance management approach for DBM.
- Subjects :
- 0106 biological sciences
Veterinary medicine
Larva
education.field_of_study
General Immunology and Microbiology
Population
Spinosad
Plutella
Biology
biology.organism_classification
010603 evolutionary biology
01 natural sciences
General Biochemistry, Genetics and Molecular Biology
Cypermethrin
010602 entomology
chemistry.chemical_compound
chemistry
medicine
Instar
General Agricultural and Biological Sciences
education
Acephate
General Environmental Science
Cartap
medicine.drug
Subjects
Details
- ISSN :
- 22315209 and 09749411
- Volume :
- 8
- Database :
- OpenAIRE
- Journal :
- Journal of Applied and Natural Science
- Accession number :
- edsair.doi...........a4baf1a5eff835857c8bd230e1347e44