Indian Journal of Plant Protection
  • Year: 2015
  • Volume: 43
  • Issue: 4

Insecticidal activity of native Bacillus thuringiensis isolates against Diamond back moth (DBM), Plutella xylostella on cabbage

  • Author:
  • A Prabhakar, P S Hugar, P U Krishnaraj, A S Vastrad, B S Nandihalli
  • Total Page Count: 6
  • Page Number: 460 to 465

Department of Agricultural Entomology, University of Agricultural Sciences, Dharwad, Karnataka-580 005, India

*E mail: prabhakar.attanti@gmail.com

Online published on 24 June, 2016.

Abstract

Bioefficacy of 100 native Bacillus thuringiensis isolates were evaluated. Isolates DBT-772 and DBT-338 recorded 100 per cent mortality against 3rdinstar larvae of Plutella xylostella and molecular characterization of lepidopteran specific cry1, cry2, cry8, cry9 and cry20 genes reviled that cry1 as the dominant gene (54.7%) and none of the eleven isolates recorded the presence of cry20 gene. Consortium of four isolates DBT-787, DBT-338, DBT-772 and DBT-2370 recorded synergistic effect on DBM larvae.

Keywords

Bacillus thuringiensis, Plutella xylostella, cry genes, consortia