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Rose volatile compounds allow the design of new control strategies for the western flower thrips (Frankliniella occidentalis)
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Rose volatile compounds allow the design of new control strategies for the western flower thrips (Frankliniella occidentalis)
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Journal Article
Rose volatile compounds allow the design of new control strategies for the western flower thrips (Frankliniella occidentalis)
2021
Overview
Western flower thrips (WFT) is a serious pest on rose crops. Semiochemical-mediated WFT–rose interactions have been studied because different rose cultivars interact differently with WFT. Thus, the volatile organic compounds (VOCs) emitted from six commercial rose cultivars were collected in vivo by headspace-solid phase microextraction (HS-SPME) in greenhouses and analyzed by gas chromatography coupled to mass spectrometry. Qualitative and quantitative differences were found among the six cultivars, and terpenes were the most abundant class of VOCs, followed by aromatic hydrocarbons, and esters. Principal component analysis (PCA) was further applied to identify the VOCs with the greatest influence on the differentiation of the cultivars. Cramer’s phi coefficients between the VOCs emitted by each cultivar and their thrips incidence were also estimated. Accordingly, nine VOCs that could generate chemotactic responses in WFT were selected for testing in a linear track olfactometer, and seven of them elicited responses in female WFT at at least to one of the test concentrations. Thrips showed significant positive chemotaxis (attraction) to six compounds, and of these, the highest response was detected for (±)-theaspirane. These findings suggest that the tested VOCs could be used to develop a new strategy for the control of WFT on roses.
Publisher
Springer Berlin Heidelberg,Springer Nature B.V
Subject
/ Biomedical and Life Sciences
/ crops
/ design
/ Ecology
/ Esters
/ females
/ Flowers
/ Forestry
/ pests
/ principal component analysis
/ Principal components analysis
/ Rosa
/ Terpenes
/ testing
/ VOCs
