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Varietal Resistance of Sugar Beets to the Sugar-beet Root Aphid Pemphigus betae Doane (Homoptera: Aphididae)1
Published online by Cambridge University Press: 31 May 2012
Abstract
Two leaf-spot- and spider-mite-resistant varieties of sugar beets, GW 674 and GW 359, exhibited resistance to the development of populations of the sugar-beet root aphid, P. betae. GW 674 is a selection of GW 359 but has higher sugar content and greater leaf-spot resistance. Nine other varieties were susceptible to root aphid infestations.
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- Copyright © Entomological Society of Canada 1964
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