Oviposition deterrence of shoots and essential oils of Minthostachys spp. (Lamiaceae) against the potato tuber moth

• DOI: 10.1111/j.1439-0418.2007.01138.x
• Publication Date: 2010-08-20T12:50:55Z
• Authors: P. C. Guerra; I. Y. Molina; E. Yábar; E. Gianoli
• Keywords: Flea beetle

Abstract: The potato tuber moth is a noxious pest of in stores, where the use repellent plants an environmentally sound alternative to application chemical pesticides. We evaluated protective effect native Minthostachys species (Lamiaceae) against infestation by rustic store Cusco, Perú. covered tubers with dried shoots spicata and glabrescens compared damage control treatment maize straw. also conducted no‐choice oviposition bioassay laboratory, testing deterrence essential oils M. , mollis at natural concentrations. recorded number eggs laid mated moths on filter paper treated each three two treatments: hexane untreated blank. Finally, we tested for differences among five full‐sib families raised under identical conditions. found that dried, chopped leaves flowers reduced percentage stores comparison (5% vs. 12%), but no difference protection was between species. Essential concentrations deterred oviposition, reducing about 80% treatments; again, there were significant whereas detected among‐family variation papers oils, substrates. Therefore, genetic resistance might evolve thereafter.