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Feeding and oviposition preferences of sweet potato weevil,Cylas formicarius elegantulus (Summers), on storage roots of sweet potato cultivars with differing surface chemistries



Feeding and oviposition preferences of sweet potato weevil,Cylas formicarius elegantulus (Summers), on storage roots of sweet potato cultivars with differing surface chemistries



Journal of Chemical Ecology 15(3): 895-903



Cores from sweet potato [Ipomoea batatas (L.) Lam.] storage roots (Centennial, Jewel, Resisto, and Regal cultivars) were presented to sweet potato weevils [Cylas formicarius elegantulus (Summers) (Coleoptera; Curculionidae)] in multiple-choice, limited-choice, and no-choice bioassays. Centennial, a susceptible cultivar in field-plot experiments, was preferred for feeding and oviposition by female weevils in choice bioassays, and for ovi-position in no-choice bioassays, compared to three other cultivars. Analysis of root surface chemistry showed a tentatively identified triterpenol acetate in Centennial, which was not found in the more resistant cultivars; another root surface component was found in higher concentrations in the more resistant cultivars.

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Accession: 053224949

Download citation: RISBibTeXText

PMID: 24271892

DOI: 10.1007/BF01015185



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