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Purple-top wilt of potatoes caused by the aster yellows virus

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Summary

A strain of the aster yellows virus obtained fromAmbrosia artemisiifolia was transmitted to potato and the induced symptoms were similar to those characterizing purple-top wilt in the field.

The incidence of infection on the potato was shown to be related to the number of infective insects allowed to feed on the plants.

Under controlled conditions the potato varieties Rural and Katahdin were more susceptible to the aster yellows virus than the Green Mountain variety.

A virus was transmitted by means of grafts from naturally infected potato plants displaying symptoms of purple-top wilt toNicotiana rustica. The recovered virus was transmitted by means ofMacrosteles divisas to aster, potato, andN. rustica and the resulting symptoms were similar to those induced by the aster yellows virus.

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Authors and Affiliations

  1. Cornell University, Ithaca, N. Y.

    S. G. Younkin

Authors
  1. S. G. Younkin
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Additional information

The writer wishes to acknowledge the helpful suggestions and criticisms of Prof. F. M. Blodgett.

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Younkin, S.G. Purple-top wilt of potatoes caused by the aster yellows virus. American Potato Journal 20, 177–183 (1943). https://doi.org/10.1007/BF02880744

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  • DOI: https://doi.org/10.1007/BF02880744

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