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Effects of mineral oil on Myzus persicae (Sulz.) and its transmission of beet yellows virus

Published online by Cambridge University Press:  10 July 2009

G. E. Russell
G. E. Russell
Affiliation:
Plant Breeding Institute, Trumpington, Cambridge
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Extract

Experiments in the glasshouse have confirmed that spraying virus-source leaves or test plants with mineral oil (liquid paraffin) inhibits transmission of beet yellows virus (BYV) to sugar-beet by Myzus persicae (Sulz.). Spraying M. persicae with oil after feeding on BYV-infected leaves and before transfer to virus-free beet seedlings also inhibited their transmission of BYV. The appearance of systemic symptoms of BYV was not delayed by treatment of the test plants or the aphids with oil. The effects of oil on virus transmission were reflected in adverse effects of oil on the settling behaviour and larviposition of the vector on test plants. It is suggested that coating the stylets with oil inhibits the feeding of aphids in the phloem thereby decreasing the efficiency of BYV transmission. The effects of oil on aphid settling and larviposition suggest that spraying crops with oil may not only reduce the incidence of aphid-transmitted viruses in them but may also diminish the population of potential vectors present in them.

Type
Research Paper
Information
Bulletin of Entomological Research , Volume 59 , Issue 4 , April 1970 , pp. 691 - 694
Copyright
Copyright © Cambridge University Press 1970

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