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International Journal of Tropical Insect Science

, Volume 24, Issue 3, pp 249–254 | Cite as

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

  • Alemtaye AndargeEmail author
  • M. C. Van Der Westhuizen
Article

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. Lhese 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.

Key words

Acyrthosiphon pisum Lens culinaris host plant resistance lentil resistance mechanisms pea aphid 

Mots clés

Acyrthosiphon pisum Lens culinaris résistance de la plante hôte lentille mécanismes de résistance puceron du pois 

Résumé

Des expérimentations en serre ont été conduites afin de déterminer les mécanismes de résistance de cinq génotypes de lentille Lens culinaris (Medikus) précédemment identifiées comme résistants et modérément résistants au puceron du pois Acyrthosiphon pisum (Harris). Un génotype standard sensible, ILL 8127, a également été testé. Le génotype French Indigo présente un niveau élevé d’antibiose en relation avec une réduction de la période reproductive, de la fécondité et de la longévité, alors que Spanish Brown présente des niveaux élevés d’antixénose et de tolérance. Si l’on considère la résistance totale, French Indigo est le génotype le plus résistant suivi par Spanish Brown. Ces génotypes pourraient constituer des sources de résistance contre A. pisum. Les cinq génotypes présentent des niveaux variables de résistance antibiotiques, antixénotiques et de tolérance comparé à ILL8127.

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Copyright information

© ICIPE 2004

Authors and Affiliations

  1. 1.Insect Biochemical Physiology LaboratoryUniversity ofNebraska-LincolnUSA
  2. 2.Department of EntomologyUniversity of the Free StateSouth Africa

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