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Oviposition behaviour of spotted bollworm, Earias vittella Fab. on some cotton genotypes

Published online by Cambridge University Press:  19 September 2011

H. C. Sharma  and
R. A. Agarwal
H. C. Sharma
Affiliation:
Indian Agricultural Research Institute, New Delhi 110 012, India
R. A. Agarwal
Affiliation:
Indian Agricultural Research Institute, New Delhi 110 012, India
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Abstract

The oviposition behaviour of spotted bollworm, Earias vittella Fab. was studied on 23 cotton genotypes under field and laboratory conditions. There were substantial differences in the number of eggs laid on different genotypes. More eggs were deposited on the bolls compared to leaves and squares. The relative oviposition preference differed under the field and laboratory conditions in the case of some genotypes. Leaf hairiness was significantly and positively correlated with number of eggs laid both under field and laboratory conditions. The effect of oviposition on varietal susceptibility appeared to be modified through other factors, such as gossypol and tannins. However, oviposition non-preference was one of the important resistance mechanisms in some cotton genotypes.

Keywords

Oviposition behaviourspotted bollwormcotton bollssquareshost plant resistance
Type
Research Article
Information
International Journal of Tropical Insect Science , Volume 4 , Issue 4 , December 1983 , pp. 373 - 376
Copyright
Copyright © ICIPE 1983

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References

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