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Potato mop-top virus in cork-diseased Peruvian potatoes

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Abstract

Superficial, circular necrotic lesions develop on cultivar Ramacimiento (Solanum tuberosum ssp.andigena) tubers in plantings at elevations above 2,500 m in the Peruvian Andes. After drying or storage the lesions become sunken or cankerous. A virus was transmitted mechanically toChenopodium quinoa andC. amaranticolor with leaf and fruit saps from Renacimiento plants grown from symptomed tubers. The virus is a strain of potato mop-top virus which causes milder tuber symptoms in European cultivars.C. quinoa was better thanC. amaranticolor as an indicator host; its spreading local lesion reaction was most sensitive at 15 C, less at 10 and 20, and nil at 25 C. Sap inoculum from fruit resulted in symptoms in 7 days, that from leaves in 13 days, and that from tubers produced no symptoms.

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Authors and Affiliations

  1. Institute of Phytopathological Research, Wageningen, The Netherlands

    Ana-Maria Hinostroza (Visiting research pathologist)

  2. North Carolina State University Agricultural Mission to Peru, La Molina, Lima

    E. R. French (Plant pathology advisor)

Authors
  1. Ana-Maria Hinostroza
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  2. E. R. French
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Hinostroza, AM., French, E.R. Potato mop-top virus in cork-diseased Peruvian potatoes. American Potato Journal 49, 234–239 (1972). https://doi.org/10.1007/BF02864833

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  • DOI: https://doi.org/10.1007/BF02864833

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