Vectors of Alfalfa and Bean Yellow Mosaic Viruses in Ladino White Clover

Abstract
The clover aphid (Anuraphis bakeri (Cowen)), the yellow clover aphid (Therioaphis trifolii (Monell)), and the pea aphid (Macrosiphum pisi (Harr.)) transmitted alfalfa mosaic from infected to virus-free Ladino white clover plants, but only the clover aphid and pea aphid transmitted bean yellow mosaic. When fed on plants infected with both viruses, the clover aphid and the pea aphid transmitted each virus separately and indiscriminately. Neither virus was transmitted by the green peach aphid (Myzus persicae (Sulz.)), apple grain aphid (Rhopalosiphum futchii (Sand.)), potato leafhopper (Empoasca fabae (Harr.), clover leafhopper (Accratagallia sanguinolenta(Prov.)), the strawberry spider mite, Tetranychus atlanticus (McG.) or the slug Derocerus reticulatum (L.).

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