Pesticide Research Journal
SCOPUSWeb of Science
  • Year: 2009
  • Volume: 21
  • Issue: 1

Insect Growth Inhibition and Antifeedant Activity of Culture Filtrate Extracts of Bacillus licheniformis

  • Author:
  • PK Sharma, P Dureja, Mayurika Goel, RS Tanwar, J Haider, S Dhingra, PL Uniyal
  • Total Page Count: 5
  • Page Number: 29 to 33

†Division of Entomology, Indian Agricultural Research Institute, New Delhi-110 012

‡Department of Botany, University of Delhi, Delhi-110 007

Division of Agricultural chemicals, Indian Agricultural Research Institute, New Delhi-110 012

Abstract

Cell free culture filtrate of Bacillus licheniformis isolated from rhizosphere soil of a healthy tomato plant was extracted with ethanol, methanol, ethyl acetate, dichloromethane and hexane. After removal of solvents these extracts were tested for antifeedant and insect growth activity against 3rd instars larvae of Helicoverpa armigera. Maximum antifeedant activity was exhibited by ethanol extract (Al50= 0.019%) and minimum by hexane extract (0.088%). The larval mortality ranged from 10.0–70.0% in different extracts. Two polar metabolites separated from ethanol extract showed Al50 of 0.015 and 0.053%.

Keywords

Bacillus licheniformis, culture filtrate extracts, antifeedance, Helicoverpa armigera, insect growth inhibition, antifeedant activity