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Factors in Resistance of Peas to the Pea Aphid, Acyrthosiphon pisum (Harr.) (Homoptera: Aphididae). I. The Sugar-Nitrogen Ratio1

Published online by Cambridge University Press:  31 May 2012

J. B. Maltais  and
J. L. Auclair
J. B. Maltais
Affiliation:
Crop Insect Section, Science Service Laboratory St. Jean, Que.
J. L. Auclair
Affiliation:
Crop Insect Section, Science Service Laboratory St. Jean, Que.
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Extract

Differences in resistance of varieties of peas to the pea aphid, Acyrthosiphon pisum (Harr.), have long ago been shown in the field and by controlled rearings under glass, Russell and Morrison (1924, p. 63) apparently being the First to observe differences. Early investigations at Wisconsin by Searb (1932) showed that pea varieties differ in the number of aphids born upon them. Maltais (1937) corraborated these early findings and reported (1950) the development of a pure-line strain of aphid-resistant pea. The influence of resistance in peas upoil aphid development, reproduction, and longevity as investigated by Harrington (1941) with individual plants under controlled conditions in the greenhouse. His results confirmed the inability of the insect to develop and reproduce as fast on a resistant plant as on a susceptible one. Tt has been postulated that the composition of the available food in the host plant plays possibly the most important role in determining the resistance to aphid attack (Evans, 1938; Painter, 1941). Maltais (1948), Auclair and Maltais (1950), and Maltais (1951) gave preliminary reports on the probable factors in varietal resistance in peas.

Type
Articles
Information
The Canadian Entomologist , Volume 89 , Issue 8 , August 1957 , pp. 365 - 370
Copyright
Copyright © Entomological Society of Canada 1957

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References

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