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Arthropods, 2015, 4(2): 38-45
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Chemical composition and insecticidal efficacy of essential oil of Echinophora platiloba DC (Apiaceae) from Zagros foothills, Iran

Iman Sharifian¹, Ali Darvishzadeh²
¹Young Researchers and Elite Club, Izeh Branch, Islamic Azad University, Izeh, Iran
²Young Researchers and Elite Club, Karaj Branch, Islamic Azad University, Karaj, Iran

Received 30 October 2014;Accepted 5 December 2014;Published online 1 June 2015
IAEES

Abstract
Essential oil of Echinophora platyloba was screened for its chemical composition and possible fumigant and contact toxicity effects against Tribolium castaneum (Herbst), Callosobruchus maculatus (F.) and Rhyzopertha dominica (F.). Aerial parts were subjected to hydrodistillation and obtained oil chemical composition was analyzed by GC-MS. (Z)-汕-ocimene (33.06 %), p-cymene (10.98 %) and Limonene (5.77 %) were major constituents. Fumigation tests were performed for 24, 48 and 72 h, while contact toxicity of essential oil was evaluated in 24h. Experimental units were located in 25㊣2 ～C and darkness condition. In contact toxicity evaluation tests T. castaneum (LC₅₀= 14.712 米l/39cm²) was more tolerant and R. dominica (LC₅₀= 9.712 米l/39cm²) was more susceptible species. After 24 h, T. castaneum (LC₅₀= 39.658 米l/250 ml air) and C. maculatus (LC₅₀= 3.835 米l/250 ml air) were more tolerant and susceptible species in fumigation bioassays, respectively. In general, mortality increased as the doses of essential oil and exposure time increased.

Keywords Echinophora platyloba;chemical composition;insecticidal efficacy;contact toxicity;fumigant toxicity;stored products beetles.

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