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Antixenosis resistance in tomato to the fruit borer Helicoverpa armigera (Hübner)
Published online by Cambridge University Press: 28 February 2007
Abstract
Antixenosis resistance to Helicoverpa armigera (Lepidoptera: Noctuidae) was studied in 10 tomato accessions selected from a germplasm of 321 at Tamil Nadu, India, using free-choice and no-choice laboratory experiments. The foliage and fruits of two accessions, namely PT 4287 and Varushanadu Local were the least preferred for feeding in both tests. In the no-choice (confinement) test, Seijima Jeisei, Varushanadu Local and PT 4287 were the most preferred for oviposition, but had low egg hatch rates. In the free-choice test, these accessions were the least preferred for oviposition. The first and second instars preferred to feed on the foliage of 30- and 45-day-old plants, respectively than 60- and 75-day-old plants, whereas ovipositional preference was insignificant among the various plant ages.
- Type
- Research Article
- Information
- International Journal of Tropical Insect Science , Volume 24 , Issue 3 , September 2004 , pp. 201 - 206
- Copyright
- Copyright © ICIPE 2004
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