Madras Agricultural Journal
Loading.. Please wait
Research Article | Open Access | Peer Review

Kairomonal Effect of Acetone Extracts of Pennisetum glaucum (L.) and Their Influence on the Parasitic / Predatory Potential of Trichogramma chilonis Ishii and Chrysoperla zastrowi sillemi (Esben-Peterson) against Eggs of Spodoptera litura (Fab.)

Volume : 103
Issue: Jul-sep
Pages: 258 - 261
Published: April 30, 2023
Download

Abstract


Efficacy of acetone extraction (1%) of various parts of bajra plant was tested on parasitization by Trichogramma chilonis Ishii and predation by Chrysoperla zastrowi sillemi (Esben-Peterson). Laboratory bioassay with acetone extracts of young leaves, old leaves, flowers and stems of bajra plant with T. chilonis and C. zastrowi sillemi revealed their kairomonal activities under in vitro condition. Treating irradiated eggs of Spodoptera litura (Fab.) with acetone extract of flowers of bajra recorded the parasitization of 16.54 per cent by T. chilonis on third day after inoculation which increased from 52.31 to 70.12 per cent on fifth and seventh day after inoculation and they were 7.31, 18.46 and 26.12 per cent when the eggs were treated with acetone alone on third, fifth and seventh days after inoculation, respectively. Maximum emergence (69.21%) was observed with acetone extract of flowers followed by acetone extract of young leaves (53.23%). The highest predation by C. zastrowi sillemi on acetone extract of flowers treated eggs of S. litura was recorded (70.18%) whereas it was 29.87 per cent in acetone treated eggs.

DOI
Pages
258 - 261
Creative Commons
Copyright
© The Author(s), 2025. Published by Madras Agricultural Students' Union in Madras Agricultural Journal (MAJ). This is an Open Access article, distributed under the terms of the Creative Commons Attribution 4.0 License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution and reproduction in any medium, provided the original work is properly cited by the user.

Keywords


Chrysoperla zastrowi sillemi Corcyra cephalonica Kairomone Pennisetum glaucum Spodoptera litura Trichogramma chilonis
footer

Copyright © Madras Agricultural Journal | Masu Journal All rights reserved.