Higher percentages of peanuts than soybeans or cowpeas become infected when these crops are growing equal distances from a source of peanut mottle virus (PMV). The total number of aphids trapped in these crops are about equal and cannot explain this differential percentage infection. Known vectors of PMV such as Aphis craccivora Koch and Myzus persicae (Sulzer) comprised 31 of the aphid population in peanuts compared to 14 in soybeans and 17 in cowpeas and could be responsible for the higher number of peanut infections. In addition, trapping of live aphids in peanut fields showed that viruliferous Rhopalosiphum maidis (Fitch) were present. Laboratory studies confirmed R. maidis could transmit PMV from peanut to peanut. This is the first report of R. maidis as a vector of PMV.
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Keywords: Arachis hypogaea, Groundnut, epidemiology, vectors, virus spread, peanut mottle virus
How to Cite:
Highland, H. & Demski, J. & Chalkley, J.,
(1981) “Aphid Populations and Spread of Peanut Mottle Virus¹”,
Peanut Science 8(2),
01 Jul 1981