Coffee leaf volatiles and egg laying by the coffee leaf miner Leucoptera coffeella

dc.creatorMagalhães, Sérgio Tinôco V.
dc.creatorGuedes, Raul Narciso C.
dc.creatorLima, Eraldo R.
dc.creatorDemuner, Antonio J.
dc.date2018-10-23T10:38:22Z
dc.date2018-10-23T10:38:22Z
dc.date2008-06
dc.date.accessioned2023-09-27T20:50:19Z
dc.date.available2023-09-27T20:50:19Z
dc.identifier0261-2194
dc.identifierhttps://doi.org/10.1016/j.cropro.2007.12.005
dc.identifierhttp://www.locus.ufv.br/handle/123456789/22370
dc.identifier.urihttps://repositorioslatinoamericanos.uchile.cl/handle/2250/8949090
dc.descriptionRecent reports of coffee genotypes resistant to one of its key pests in the Neotropical region, the leaf miner Leucoptera coffeella (Lepidoptera: Lyonetiidae), sparked studies trying to recognize the underlying causes of resistance. An association between increased egg laying by the leaf miner and increased caffeine levels in coffee leaves was recently recognized. However, since caffeine is not volatile, its effect on egg laying is likely aided by a volatile compound. This was the hypothesis tested here. Coffee leaf volatiles from 12 coffee genotypes were collected, analyzed (gas chromatograph coupled with a mass spectrometer (CG/MS)) and tested for electrophysiological activity (EAG). The active volatiles thus recognized were subjected to partial correlation against the density of eggs laid by the leaf miner in each coffee genotype. The volatile showing significant positive correlation, p-cymene, was subjected to an attraction test in a four-arm olfactometer confirming its biological activity and providing evidence of its role stimulating egg laying by the coffee leaf miner.
dc.formatpdf
dc.formatapplication/pdf
dc.languageeng
dc.publisherCrop Protection
dc.relationv. 27, n. 6, p. 1038- 1041, jun. 2008
dc.rightsElsevier Ltd.
dc.subjectCoffea arabica
dc.subjectEgg-laying preference
dc.subjectLepidoptera
dc.subjectLyonetiidae
dc.subjectp- Cymene
dc.titleCoffee leaf volatiles and egg laying by the coffee leaf miner Leucoptera coffeella
dc.typeArtigo


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