Hostname: page-component-cd9895bd7-q99xh Total loading time: 0 Render date: 2024-12-27T08:19:57.326Z Has data issue: false hasContentIssue false
  • English
  • Français

Resistance of some sorghum lines to the spotted stalk-borer Chilo partellus under Western Kenya conditions

Published online by Cambridge University Press:  19 September 2011

Z. T. Dabrowski  and
E. L. Kidiavai
Z. T. Dabrowski
Affiliation:
The International Centre of Insect Physiology and Ecology (ICIPE), P.O. Box 30772, Nairobi, Kenya
E. L. Kidiavai
Affiliation:
The International Centre of Insect Physiology and Ecology (ICIPE), P.O. Box 30772, Nairobi, Kenya
Get access

Abstract

Field observations on Chilo infestation of 100 promising sorghum lines showed that there are six levels of relationship affecting plant colonization and damage level by stem-borers: non-preference for oviposition (E 302, E 303, IS 1044, IS 1151, IS 2162, IS 4660, IS 17739, IS 18328, IS 18349, IS 18479, and IS 18489); feeding of the first larval instars on young leaves (reduced on E 302, E 303, IS 1044, IS 2162, IS 2209, IS 18349 and IS 18427); causing of ‘dead hearts’ by young larval instars due to extensive feeding in stems of young plants (lower for IS 2162, IS 2263, IS 18328, IS 18349); tunnelling (extent and location) of older instars in stems (low in IS 4660, IS 18427 and IS 18479); tolerance of plants to leaf damage (in spite of high damage, plants form panicles) (IS 2205); and tolerance of plants to larval feeding in stems (in spite of high tunnelling, the plants form seeds). The effect of a number of cultivars showing different levels and mechanisms of resistance on the Chilo behaviour and biology was studied in depth under field conditions.

Keywords

Chilo partellusthe spotted stalk-borerantibiosistolerancenon-preferenceovipositionpreferenceresistancesorghum
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 4 , Special Issue 1-2: Crop-Borers and Emerging Strategies for their Control , June 1983 , pp. 119 - 126
Copyright
Copyright © ICIPE 1983

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Doggett, H. (1970) Sorghum. Longmans, Green, London, 403 pp.Google Scholar
Jotwani, M. G. and Davies, J. C. (1980) Insect resistance studies on sorghum at International Institutes and National Programmes with special reference to India. In Biology and Breeding for Resistance to Arthropods and Pathogens in Agricultural Plants (Edited by Harris, M. K.), pp. 224–236. Texas A & M University System, College Station, Texas.Google Scholar
Jotwani, M. G., Chaudhari, S. and Singh, S. P. (1978) Mechanism of resistance to Chilo partellus (Swinhoe) in sorghum. Indian J. Ent. 40, 273–76.Google Scholar
Seshu Reddy, K. V. and Davies, J. C. (1978) A new medium for mass rearing of the sorghum stem-borer, Chilo partellus Swinhoe (Lepidoptera: Pyralidae) and its use in resistance screening, Ind. J. Pl. Production 48–55.Google Scholar