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Susceptibility of eight potato cultivars to Myzus persicae Sulzer in the greenhouse

Published online by Cambridge University Press:  19 September 2011

J. H. Nderitu  and
J. M. Mueke
J. H. Nderitu
Affiliation:
National Agricultural Laboratories, P. O. Box 14733, Nairobi, Kenya
J. M. Mueke
Affiliation:
National Agricultural Laboratories, P. O. Box 14733, Nairobi, Kenya
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Abstract

Eight potato cultivars namely Anett, Desiree, Feldeslohn, Kerr's Pink, Kenya Baraka, Roslin Eburu, Roslin Gucha and Roslin Tana were tested in the greenhouse to compare their susceptibility to Myzus persicae Sulzer. Differences in the susceptibility of the potato cultivars to aphids were reflected in the number of the apterae aphids that developed on them. Anett, Kerr's Pink and Feldeslohn supported the highest, and Roslin Tana the lowest population of M. persicae. Roslin Tana was found to be resistant. The bottom leaves of most potato cultivars maintained the highest aphid population while the upper leaves maintained the lowest. There were no significant correlations between leaf area and yield of potatoes with the number of apterae aphids on the eight potato cultivars.

Résumé

Huit varietés de pomme de terre, Anette, Désirée, Feldeslohn, Rose de Kerr, Kenya Baraka, Roslin Eburu, Roslin Gucha, et Roslin Tana ont été testées dans une serre afin de comparer leur sensibilité aux aphidés, ont été observées en tenant compte de nombre d' aphidés Myzus persicae Sulzer. Des diferences dans la sensibilité de variétés de pomme de terre aux aphidés ont été observées en tenant compte de nombre d' aphidés aptères qui ont dévelopé sur elles. La population la plus élevée de M. persicae a été observée sur Anett, Rose de Kerr et Feldeslohn; tandis que Roslin Tana a donné la plus faible population d'aphidés. Cette dernière variété de pomme de terre a été ainsi trouvée résistante á cette espéce d' aphidés. La plus part de variétés de pomme de terre ont presenté des febilles ayant un nombre élevé d'aphidés á leur partie inférieure alors que la population d'aphidés la moins élevée était localisée sur la partie supérieure de feuilles. Il n'y avait pas de correlat'ions significant entre la surface de la fenille, la quantité de pomme de terre ré coltée avec le nombre d'aphidés aptéres.

Keywords

ResistancesusceptibilityApteraeMyzus persicaepotato cultivars
Type
Research Article
Information
International Journal of Tropical Insect Science , Volume 10 , Issue 2 , April 1989 , pp. 229 - 234
Copyright
Copyright © ICIPE 1989

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References

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