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Enkele waarnemingen over versmelten van zoösporen bij Phytophthora infestans (Mont.) de Bary

With a summary: Some observations on zoöspore fusion in Phytophthora infestans (Mont.) de Bary

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Summary

Zoospores ofPhytophthora infestans were seen to fuse in pairs. Generally within 30 min. after zoospore discharge, fusion started by the formation of a connection between touching zoospores. Gradually the connection became shorter and thicker (fig. 1,2 and 3), and within 30 min. the two zoospores united to form a spherical body (fig. 4). The flagella were thrown off just before the compound zoospore assumed the spherical shape. The compound zoospores germinated by a germ tube within 30 min. after their formation. The analogy withCritopoulos' observations on zoospore fusion inP. capsici is discussed.

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Literatuur

  • Bruyn, H. L. G. de — 1934. Methode voor het vaststellen van de vatbaarheidsgraad van aardappelknollen voor de aardappelziekte. T. Pl. ziekten 49: 77–96.

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  • Bruyn, Helena L. G. de — 1951. Pathogenic differentiation in Phytophthora infestans (Mont.) De Bary. Phytopath. Z. 18: 339–359.

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  • Critopoulos, P. D. — 1951. Collar rot of tomato in California caused by Phytophthora capsici. Phytopathology 41: 937 (abstr.).

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Author notes

  1. Ir J. Hiddema

    Present address: Keuringsdienst Friesland van de N.A.K., Leeuwarden

Authors and Affiliations

  1. Laboratorium voor Phytopathologie van de Landbouwhogeschool, Wageningen

    Ir J. Hiddema

  2. Laboratorium voor Phytopathologie van de, Landbouwhogeschool, Wageningen

    Ir A. P. Kole

Authors
  1. Ir J. Hiddema
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  2. Ir A. P. Kole
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Hiddema, I.J., Kole, I.A.P. Enkele waarnemingen over versmelten van zoösporen bij Phytophthora infestans (Mont.) de Bary. Tijdschrift Over Plantenziekten 60, 138–139 (1954). https://doi.org/10.1007/BF01988485

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  • DOI: https://doi.org/10.1007/BF01988485

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