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Asian Journal of Plant Sciences
Year: 2005  |  Volume: 4  |  Issue: 5  |  Page No.: 445 - 448

Effect of Pseudomonas fluorescens for the Management of Insecticide Resistant Helicoverpa armigera Hubner (Lepidoptera: Noctuidae)

P. Duraimurugan and A. Regupathy    

Abstract: In the present study, the talc-based formulation of Pseudomonas fluorescens strain (Pf1) was tested against H. armigera in cotton, okra and pigeonpea. The susceptibility of H. armigera fed on P. fluorescens treated and untreated plants was bioassayed against cypermethrin on cotton bolls, okra fruits and pigeonpea pods. The susceptibility of third instar larvae of H. armigera to cypermethrin, fed on P. fluorescens treated plants did not differ significantly with the untreated plants. However, there was variation in the protein banding pattern among the P. fluorescens treated and untreated plants with or without infestation of H. armigera. Protein bands of molecular weight 83 and 40 kDa in cotton, 130 and 52 kDa in okra were observed in the Pseudomonas treated plants with infestation of H. armigera.

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