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Susceptibility of potato varieties to Ontario isolates ofVerticillium albo atrum

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Summary

Ten potato varieties were inoculated with the dark mycelial and the microsclerotial isolates ofVerticillium albo atrum. The D.M. isolate used proved to be considerably more pathogenic than the M.S. isolate. Of varieties tested, Kennebec, Cobbler, and Cherokee were the most susceptible. None of the ten M.S. isolates ofVerticillium albo atrum inoculated on Cobbler potatoes in 1965 caused any reduction in yield. Isolations made from diseased potato stems collected from a province-wide survey in 1964 and 1965 yielded appproximately 50/50 D.M. and M.S. isolates ofVerticillium albo atrum.

Resumen

El aislado deVerticillium albo atrum D. M. fué mucho más patogénico que el M. S. aislado. Entre las diez variedades ensayadas, Kennebec, Cobbler y Cherokee fueron las más susceptibles. Ningún de los diez aislados de M. S. deVerticillium albo atrum inoculados en papas Cobbler en 1965 produjo reducción de rendimiento. Aislamientos hechos de papas infectadas coleccionadas durante un reconocimiento de toda la provincia en 1964 y 19655 produjeron apoximadamente 50/50 aislados de D. M. y M. S. deVerticillium albo atrum.

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Authors and Affiliations

  1. Department of Botany, University of Guelph, Ontario, Canada

    L. V. Busch (Associate Professor)

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  1. L. V. Busch
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Busch, L.V. Susceptibility of potato varieties to Ontario isolates ofVerticillium albo atrum . American Potato Journal 43, 439–442 (1966). https://doi.org/10.1007/BF02862732

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  • DOI: https://doi.org/10.1007/BF02862732

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