Infectivity of Aphids after Several Hours on Tobacco infected with Potato Virus Y


WATSON showed that fasted Myzus persicœ (Sulz.) were more than 60 per cent infective after 5 min. on tobacco infected with potato virus Y, but after 4 hr. on infected plants only about 10 per cent of the aphids were infective1. During investigations on the aphid transmission of potato virus Y, it was observed that, after several hours on tobacco, some aphids appeared to be feeding, others were just commencing to insert their stylets, and still others were wandering about the plant. The present communication reports which aphids transmit potato virus Y after a group has spent several hours on an infected plant.

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BRADLEY, R. Infectivity of Aphids after Several Hours on Tobacco infected with Potato Virus Y. Nature 171, 755–756 (1953).

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