Antifeedant effect of Brassica nigra seeds against cotton leafworm Spodoptera littoralis and its potential antibacterial activity
1 Department of Laboratory Sciences, College of Sciences and Arts at Al-Rass, Qassim University, Saudi Arabia.
2 Department of Zoology and Entomology, Faculty of Science, Assiut University, Assiut, Egypt.
Research Article
GSC Biological and Pharmaceutical Sciences, 2018, 05(02), 032–040.
Article DOI: 10.30574/gscbps.2018.5.2.0110
Publication history:
Received on 01 October 2018; revised on 11 October 2018; accepted on 19 October 2018
Abstract:
Water extract of mustard seeds (Brassica nigra L.) at 40, 20 and 10% concentrations were applied to evaluate the bioactivity of mustard seed extract against the 4th instar larvae of cotton leafworm Spodoptera littoralis. Increasing concentration of mustard extracts exhibited anti-feedant activity. Antibacterial potential of mustard seeds was determined using the disc diffusion test against 10 bacterial strains; Aqueous and acetone extracts showed very weak or no antibacterial activity ranging from 6.0 to 7.75 mm zone of inhibition (ZI), 6.0 mm is the diameter of the blank disc and means no activity; The methanol extract showed varied degrees of weak antibacterial activity (ranging from 6.5 to 8.75 mm ZI). B. nigra could be a good source of insect antifeedant agents.
Keywords:
Antifeedant; Brassica nigra; Antibacterial; Spodoptera littoralis
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Copyright © 2018 Author(s) retain the copyright of this article. This article is published under the terms of the Creative Commons Attribution Liscense 4.0
