Heydarian, M. (2011) Insecticidal and repellency effect of essentialoils of some medicinal plants on Tribolium castaneum and Callosobruchus maculatus. Masters thesis, University of Zabol.
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Abstract
Today with the problems resulting from the use of chemical pesticides the tendency to use this material has been reduced. Recently the study on the use of essential oils and plant extracts as alternative synthetic chemical pesticides has been taken lots of attention. Plant Insecticides, including essential oils, are suitable substitute for pesticides that insects are resistant to them. The fumigant toxicity and repellency effects of essential oils of three plant species, Ziziphora Clinopodioides, Vitex Agnus-Castum and Teucrium Polium were investigated against two stored product insect species, Tibolium Castaneum and Callosobruchus maculatus F. at 27 1.C; 65 5 % R.H under dark condition. The essential oil was prepared by water distillation method. The mortality of 1-7 days old adults of T. Castaneum and C. Maculatus, were investigated at exposure time for 3 to 24 h. The highest concentration (416.16 μl/l air) of Z. Clinopodioides, V. Agnus-Castum and T. Polium essential oil caused 82.5; 65 and 80 % mortality of. C. maculatus and 85, 40 and 27.5 mortality of T. Castaneum after 12 h exposure time, respectively. C. Maculatus was significantly more susceptible than T. Castaneum. The values of 50% lethal dose of Z. Clinopodioides, V. Agnus-Castum and T. Polium essential oil on T. castaneum and C. maculatus were 87.676, 186.150, 359.492 μl/l and 0.693, 39.59, 150.93 μl/l respectively. The essential oil have significantly repelled insect. Z. Clinopodioides essential oil was more repellent to T. Castaneum (81.3 %) and C. Maculatus (75.3 %) than other essential oils. The composition of essential oil was analyzed by gas chromatography mass spectrophotometry (GC mass) method. The predominant components in the Z. Clinopodioides Pulegone (80%), Thymol (1.4%), Phenol (1.4%) and Germacrene-d (10%), V. Agnus-Castum oil contained Vividiflorol (40.8%), Caryophyllene Oxid (20.5%), Nephtalene (18.5%) and (Alph-tenpinolene17.5%) and T. Polium oil contained Globolol (40.5%), Longirerbenone (29%), Alph-cadinol (15.5%) and Vividiflorol (7.2%).
| Item Type: | Thesis (Masters) |
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| Uncontrolled Keywords: | Ziziphora Clinopodioides, Vitex Agnus-Castum, Teucrium Polium, essential oils, fumigant toxicity |
| Subjects: | Q Science > QL Zoology |
| Depositing User: | admin admin1 admin2 |
| Date Deposited: | 28 May 2016 06:11 |
| Last Modified: | 28 May 2016 06:11 |
| URI: | http://eprints.uoz.ac.ir/id/eprint/666 |
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