Antifeedant and ovipositional deterrent activity of medicinal plants of Western Himalaya on Plutella xylostella

Aim: Medicinal plants of Himalayan region is inadequately known for their role in pest management. The present study was conducted to assess the response of different extracts of Acorus calamus (L.) and Vitex negundo (L.) on antifeedant and ovipositional deterrent activity of Plutella xylostella. Me...

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Bibliographic Details
Published in:Journal of environmental biology 2018-11, Vol.39 (6), p.966-972
Main Authors: Matharu, KS, Mehta, P.K.
Format: Article
Language:English
Subjects:
Acorus calamus
Aquatic plants
Biological activity
Data processing
Eggs
Environmental science
Females
Herbal medicine
Host plants
Insecticides
Insects
Leaves
Medicinal plants
Methanol
Oils & fats
Oviposition
Pest control
Pesticides
Plant extracts
Plutella xylostella
Solvents
Vitex negundo
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Summary:Aim: Medicinal plants of Himalayan region is inadequately known for their role in pest management. The present study was conducted to assess the response of different extracts of Acorus calamus (L.) and Vitex negundo (L.) on antifeedant and ovipositional deterrent activity of Plutella xylostella. Methodology: Acorus calamus (Rhizome) and Vitex negundo (leaves) were taken as an experimental material. Methanol (polar solvent) and hexane (non-polar solvent) were used for extraction. Antifeedant and ovipostional deterrent effect of two plants were workout against Plutella xylostella. The data were statistically analysed by t-tests for paired comparisons. Results: Stronger ovipositional deterrent effects was observed in A. calamus (methanol extract) with higher oviposition deterrent indices (ODI) (38.7), followed by hexane extract of V. negundo. The leaves treated with plant extracts of A. calamus and V. negundo deterred the female of P. xylostella to some extent to lays eggs. After three days of treatment, methanol extract of A. calamus showed a residual deterrent effect to female of P. xylostella due to its low volatile nature. Interpretation: Application of methanol and hexane extracts of A. calamus and V. negundo on host plants render them less attractive and show ovipositional deterrent to females of P. xylostella.
ISSN:0254-8704
2394-0379
DOI:10.22438/jeb/39/6/MRN-559