Resistance factors in pepper inhibit larval development of thrips (Frankliniella occidentalis)

A. Maharijaya, B.J. Vosman, F. Verstappem, M.M. Steenhuis-Broers, R. Mumm, A. Purwito, R.G.F. Visser, R.E. Voorrips

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The western flower thrips [Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae)] is a major pest in pepper cultivation. Therefore, host plant resistance to thrips is a desirable trait. The objectives of this study were to determine the effect of resistance on the development of thrips and to identify metabolite compounds related to the resistance. Three highly resistant, three medium resistant, and three susceptible pepper accessions were used in this study. Adult and pre-adult survival, developmental time, and oviposition rate were assessed. Gas chromatography-mass spectrometry was used to identify compounds that correlate with the level of resistance to thrips. Our results show that resistance of pepper accessions has a significant effect on oviposition rate and larval mortality. Seven compounds were identified that correlate with resistance to thrips and six compounds were identified that correlate with susceptibility to thrips. Some of these compounds, such as tocopherols, were previously shown to have an effect on insects in general. Also, some specific secondary metabolites (alkanes) seem to be more abundant in susceptible accessions and were induced by thrips infestation
Original languageEnglish
Pages (from-to)62-71
JournalEntomologia Experimentalis et Applicata
Issue number1
Publication statusPublished - 2012


  • western flower thrips
  • life-history parameters
  • colorado potato beetle
  • host-plant quality
  • glandular trichomes
  • wild tomato
  • thysanoptera
  • behavior
  • insect
  • growth

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