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Effect of sorghum resistant to Stenodiplosis sorghicola (Coquillett) (Diptera: Cecidomyiidae) on oviposition and development of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae)

Franzmann, B.A. and Schllz, B.C.G. (2003) Effect of sorghum resistant to Stenodiplosis sorghicola (Coquillett) (Diptera: Cecidomyiidae) on oviposition and development of Helicoverpa armigera (Hübner) (Lepidoptera: Noctuidae). Australian Journal of Entomology, 42 (1). pp. 35-39.

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Article Link(s): http://dx.doi.org/10.1046/j.1440-6055.2003.00335.x

Publisher URL: http://www3.interscience.wiley.com/cgi-bin/home

Abstract

Helicoverpa armigera oviposition preference for, and larval development on sorghum hybrids with differing resistance to sorghum midge, Stenodiplosis sorghicola, were investigated. When H. armigera larvae were fed seed of resistant and susceptible hybrids in the laboratory there were no differences in larval and pupal sizes or the rate of development. The same result was recorded when larvae fed on panicles on plants in a glasshouse. On some sampling occasions, significantly more eggs were laid on panicles of resistant hybrids in the field. This occurred when plants were in plots and also in a mixed planting. Midge-resistance status did not affect levels of egg parasitism. In a field study using recombinant inbred lines between a midge-resistant and a midge-susceptible line, no relationship was found between level of resistance and oviposition of H. armigera. We conclude that, although midge-resistant hybrids are sometimes preferred for oviposition by H. armigera, the resistance per se does not determine this preference. Egg survival, larval survival, development and resultant damage are not significantly affected by the midge-resistance status of the host.

Item Type:Article
Corporate Creators:Plant Science
Additional Information:© Blackwell Publishing Ltd.
Keywords:Helicoverpa; oviposition; plant resistance; sorghum midge.
Subjects:Science > Zoology > Invertebrates > Insects
Plant pests and diseases > Pest control and treatment of diseases. Plant protection > Organic plant protection. Biological control
Plant pests and diseases > Individual or types of plants or trees > Sorghum
Deposited On:26 Feb 2004
Last Modified:21 Jun 2011 00:57

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