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A mosaic disease of Primula obconica caused by a potyvirus

, : A mosaic disease of Primula obconica caused by a potyvirus. Acta Horticulturae (59): 167-173

A virus, sporadically isolated since 1968 from P. obconica plants showing mosaic and flower colour-breaking, could be obtained from flowers only. An elongated virus of the potyvirus group, it infected a wide range of plant spp. (10 families) in experiments. It is aphid transmitted in a stylet-borne manner. The thermal inactivation point is 55 - 60 deg C, dilution end point 10-3 - 10-4, and longevity 15 days at room temp.

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