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Mechanisms of resistance of lentil Lens culinaris Medikus, genotypes to the pea aphid Acyrthosiphon pisum Harris (Hemiptera: Aphididae)

Published online by Cambridge University Press:  28 February 2007

Alemtaye Andarge  and
M.C. Van Der Westhuizen
Alemtaye Andarge*
Affiliation:
Insect Biochemical Physiology Laboratory, University of Nebraska-Lincoln, NE 68583-0816, USA
M.C. Van Der Westhuizen
Affiliation:
Department of Entomology, University of the Free State, PO Box 339, BFN 9300, South Africa
*
*Email: alem@unlserve.unl.edu or aandarge2002@yahoo.com
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Abstract

Glasshouse studies were conducted to determine mechanisms of resistance of five genotypes of lentil Lens culinaris (Medikus) previously identified as resistant and moderately resistant to the pea aphid Acyrthosiphon pisum (Harris). A susceptible standard, ILL 8127, was also included. French Indigo had high levels of antibiosis, demonstrated by reduced reproductive period, fecundity and longevity, while Spanish Brown had high levels of antixenotic and tolerance components of resistance. Based on overall resistance, French Indigo was the most resistant genotype followed by Spanish Brown. These genotypes could be a source for resistance to A. pisum. All five genotypes had varying levels of antibiosis, antixenosis and tolerance components of resistance compared with ILL 8127.

Keywords

Acyrthosiphon pisumLens culinarishost plant resistancelentilresistance mechanismspea aphid
Type
Research Article
Information
International Journal of Tropical Insect Science , Volume 24 , Issue 3 , September 2004 , pp. 249 - 254
Copyright
Copyright © ICIPE 2004

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