Journal of Stored Products and Postharvest Research
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Article Number - CC7B41641443


Vol.4(3), pp. 44-50 , October 2013
DOI: 10.5897/JSPPR2013.0147
ISSN: 2141-6567



Full Length Research Paper

Extracts of Jatropha curcas L. exhibit significant insecticidal and grain protectant effects against maize weevil, Sitophilus zeamais (Coleoptera: Curculionidae)



Constance C. Jide-Ojo
  • Constance C. Jide-Ojo
  • Biosciences Research Education and Advisory Centre, Yola, Nigeria
  • Google Scholar
Daniel T. Gungula
  • Daniel T. Gungula
  • Modibbo Adama University of Technology, Yola, Nigeria
  • Google Scholar
Opeolu O. Ojo
  • Opeolu O. Ojo
  • Modibbo Adama University of Technology, Yola, Nigeria
  • Google Scholar







 Accepted: 20 August 2013  Published: 31 October 2013

Copyright © 2013 Author(s) retain the copyright of this article.
This article is published under the terms of the Creative Commons Attribution License 4.0


Phytochemical composition of leaf extracts as well as biological effects of juice, leaf extracts and seed oil of Jatropha curcas against Sitophilus zeamis were examined. The study also investigated the inhibition of oviposition, progeny production and grain damage, insecticidal effects and mammalian toxicity of the extracts. Compared to other phytochemicals, the concentration of saponin and cardiac glycoside were higher in the leaf extract. All extracts of J. curcas (0 – 100 ppm) investigated showed a dose-dependent inhibition of ovisposition, progeny production and promote significant (P < 0.001) insect mortality. Grains pre-treated with seed oil produced the highest result for all the parameters. The seed oil (100 ppm) produced 93% (P < 0.001) protection against grain damage by Sitophilus zeamis. Observable physical deformities were observed in rats administered with graded doses of the seed oil as opposed to other extracts. Administration of a single dose of the extracts produced significant (P < 0.01) elevation of serum level of alanine (ALT) and aspartic (AST) transaminases and alkaline phosphatase (ALP) in rats.

 

Key words: Jatropha curcas, Sitophilus zeamis, biopesticide, botanical insecticide, phytochemicals, antifeedant.

 

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APA (2013). Extracts of Jatropha curcas L. exhibit significant insecticidal and grain protectant effects against maize weevil, Sitophilus zeamais (Coleoptera: Curculionidae). Journal of Stored Products and Postharvest Research, 4(3), 44-50.
Chicago Constance C. Jide-Ojo, Daniel T. Gungula and Opeolu O. Ojo,. "Extracts of Jatropha curcas L. exhibit significant insecticidal and grain protectant effects against maize weevil, Sitophilus zeamais (Coleoptera: Curculionidae)." Journal of Stored Products and Postharvest Research 4, no. 3 (2013): 44-50.
MLA Constance C. Jide-Ojo, et al. "Extracts of Jatropha curcas L. exhibit significant insecticidal and grain protectant effects against maize weevil, Sitophilus zeamais (Coleoptera: Curculionidae)." Journal of Stored Products and Postharvest Research 4.3 (2013): 44-50.
   
DOI 10.5897/JSPPR2013.0147
URL http://academicjournals.org/journal/JSPPR/article-abstract/CC7B41641443

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