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Some Field and Screenhouse Experiments on Maize Resistance to Chilo Partellus under Western Kenya Conditions

  • Z. T. Dabrowski
  • E. O. Nyangiri
Article

Abstract

The results of five experiments on maize resistance to Chilo partellus, suggest that there are at least five levels of relationships affecting plant colonization, larval survival and damage level: non-acceptance for oviposition shown by Inbred D and G and CIMMYT lines 125, 33, 324 and 178 (s3). Preferred Inbred A was oviposited 2–3 times higher. Feeding of young larval instars on young leaves or leaf sheaths, reduced on CIMMYT lines 324, 125 and 33; concentration of feeding of young larval instars on the upper growing part of plant, extensive on the highly susceptible Inbred A and reduced on all resistant lines tested; penetration of young larval instars into stem, reduced on CIMMYT lines 34 and 125 and Inbred G; and feeding of older larval instars in stem, reduced on CIMMYT lines 324, 178, 125 and Inbred G.

Key Words

Maize Chilo partellus the spotted stalk-borer stem borers non-preference non-acceptance antixenosis antibiosis tolerance screening for resistance oviposition 

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Copyright information

© ICIPE 1983

Authors and Affiliations

  • Z. T. Dabrowski
    • 1
  • E. O. Nyangiri
    • 1
  1. 1.The International Centre of Insect Physiology and Ecology (ICIPE)NairobiKenya

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