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J Chem Ecol

Title:		Variation in aphid alarm pheromone content among glandular and eglandular-hairedMedicago accessions
Author(s):		Mostafavi R; Henning JA; Gardea-Torresday J; Ray IM;
Address:		"Department of Agonomy and Horticulture, New Mexico State University, 88003-8003, Las Cruces, New Mexico"
Journal Title:		J Chem Ecol
Year:		1996
Volume:		22
Issue:		9
Page Number:		1629 - 1638
DOI:		10.1007/BF02272403
ISSN/ISBN:		0098-0331 (Print) 0098-0331 (Linking)
Abstract:		"Pea (Acyrthosiphon pisum Harris) and blue alfalfa aphid (A. kondoi Shinji) deterrency in alfalfa (Medicago saliva L.) may result from incorporating higher levels of the aphid alarm pheromone,(E)-beta-farnesene relative to(E)-beta-caryophyllene. We evaluated five eglandular and two glandular-haired alfalfa accessions for differences in(E)-beta-farnesene and(E)-beta-caryophyllene content under glasshouse conditions using supercritical fluid extraction and gas chromatography. In addition, pea and blue alfalfa aphid olfactory behavioral tests were conducted uponMedicago species containing different ratios of(E)-beta-famesene relative to(E)-beta-caryophyllene. No differences in(E)-beta-caryophyllene content were observed among the seven entries (mu=0.42 ng/g plant material). Significant differences (P
Keywords:
Notes:		"PubMed-not-MEDLINEMostafavi, R Henning, J A Gardea-Torresday, J Ray, I M eng 1996/09/01 J Chem Ecol. 1996 Sep; 22(9):1629-38. doi: 10.1007/BF02272403"