Journal of Chemical Ecology

, Volume 7, Issue 4, pp 707–716 | Cite as

Effect of day length and light intensity on 2-tridecanone levels and resistance inLycopersicon hirsutum f.glabratum toManduca sexta

  • G. G. Kennedy
  • R. T. Yamamoto
  • M. B. Dimock
  • W. G. Williams
  • J. Bordner
Article

Abstract

First instarManduca sexta (L.) larvae confined on foliage fromLycopersicon hirsutum f.glabratum (accession PI 134417) plants grown under a long-day regime exhibited greater mortality than larvae on foliage from plants grown under a short-day regime. 2-Tridecanone, a toxin important in the insect resistance of PI 134417, was significantly more abundant in the foliage of plants grown under the long-than the short-day regimes. Light intensity influenced neither 2-tridecanone levels nor the expression of resistance. The density of glandular trichomes, which secrete 2-tridecanone, was influenced by an interaction between day length and light intensity.

Key words

Manduca sexta (L.) Lepidoptera Sphingidae Lycopersicon hirsutum f.glabratum day length light intensity 2-tridecanone glandular trichome resistance allelochemic 

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Copyright information

© Plenum Publishing Corporation 1981

Authors and Affiliations

  • G. G. Kennedy
    • 1
  • R. T. Yamamoto
    • 1
  • M. B. Dimock
    • 1
  • W. G. Williams
    • 2
  • J. Bordner
    • 2
  1. 1.Department of EntomologyNorth Carolina State UniversityRaleigh
  2. 2.Department of ChemistryNorth Carolina State UniversityRaleigh

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