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DEVELOPMENT AND REPRODUCTION OF THE GREEN PEACH APHID, MYZUS PERSICAE (HOMOPTERA: APHIDIDAE), ON UPPER AND LOWER LEAVES OF THREE POTATO CULTIVARS1

Published online by Cambridge University Press:  31 May 2012

R. K. Jansson  and
Z. Smilowitz
R. K. Jansson
Affiliation:
Department of Entomology, The Pennsylvania State University, University Park, Pennsylvania 16802
Z. Smilowitz
Affiliation:
Department of Entomology, The Pennsylvania State University, University Park, Pennsylvania 16802
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Abstract

The influence of potato cultivar (Solanum tuberosum tuberosum (L.) cvs. Katahdin (long-season), Norchip (mid-season), and Superior (short-season)) and vertical leaf position on certain life statistics of the green peach aphid, Myzus persicae (Sulzer), were assessed in a glasshouse environment. Aphids were caged on upper and lower leaves of each cultivar. Developmental time requirements for pre-reproductive life stages were similar among cultivars and between leaf positions. Longevity was similar among cultivars within leaf position. However, aphids survived 62.3, 53.6, and longer on lower leaves than on upper leaves of Superior, Norchip, and Katahdin (p < 0.05 on Superior and Katahdin). Mean generation time (MGT) was similar among cultivars on upper leaves. On lower leaves, MGT was shorter on Superior than on Katahdin. MGT was 15.2, 6.9, and shorter on lower leaves than on upper leaves of Superior, Norchip, and Katahdin, respectively (p < 0.05 on Superior). Total fecundity and intrinsic rate of increase were greater on the lower leaves of each cultivar.

Résumé

On a étudié en serre l'influence du cultivar de la pomme de terre (Solanum tuberosum tuberosum (L.) cvs. Katahdin (tardif), Norchip (maturité moyenne) et Superior (précoce)), et celle de la position verticale du feuillage hôte, sur certaines statistiques vitales du puceron vert du pêcher, Myzus persicae (Sulzer). Les pucerons ont été encagés sur des feuilles hautes ou basses de chacun des cultivars. Le temps requis pour le développement des stades pré-reproducteurs se sont avérés similaires entre les cultivars et entre les positions des feuilles. La longévité était similaire entre les cultivars pour une même position du feuillage. Cependant les pucerons on survécu 62.3, 53.6 et de plus sur les feuilles basses que sur les feuilles hautes des cvs. Superior, Norchip et Katahdin (p < 0.05 pour Superior et Katahdin). Le temps moyen requis par génération (TMG) était similaire entre cultivars sur les feuilles hautes. Sur les feuilles basses, le TMG était plus court sur Superior que sur Katahdin. Le TMG était de 15.2, 6.9 et plus court sur les feuilles basses que sur celles du haut, chez Superior, Norchip et Katahdin respectivement (p < 0.05 pour Superior). La fécondité totale et le taux intrinsèque d'accroissement naturel étaient plus élevés sur les feuilles du bas que sur celles du haut.

Type
Articles
Information
The Canadian Entomologist , Volume 117 , Issue 2 , February 1985 , pp. 247 - 252
Copyright
Copyright © Entomological Society of Canada 1985

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