European Journal of Plant Pathology

, Volume 105, Issue 3, pp 241–250

A Laboratory Assay for Phytophthora infestans Resistance in Various Solanum Species Reflects the Field Situation

  • Vivianne G.A.A. Vleeshouwers
  • Willem van Dooijeweert
  • L.C. Paul Keizer
  • Luc Sijpkes
  • Francine Govers
  • Leontine T. Colon
Article

DOI: 10.1023/A:1008710700363

Cite this article as:
Vleeshouwers, V.G., van Dooijeweert, W., Paul Keizer, L. et al. European Journal of Plant Pathology (1999) 105: 241. doi:10.1023/A:1008710700363

Abstract

Physiological and molecular research on resistance responses of Solanum tuberosum cultivars and partially resistant Solanum species to Phytophthora infestans requires a reliable resistance test that can be used in the laboratory. Laboratory tests performed on detached leaves and intact plants were compared with field tests for similarity of late blight reactions. Detached leaves from field-grown plants were as resistant as detached leaves from climate chamber-grown plants when challenged with P. infestans. However, detached leaves incubated in covered trays at high relative humidity were more susceptible than detached leaves kept in open trays or leaves on intact plants. The incubation conditions of detached leaves in covered trays rather than detachment itself appeared to affect the resistance expression. Detached leaves of some wild Solanum genotypes became partially infected, whereas intact plants were completely resistant when inoculated. Inoculation of leaves on intact plants, however, resulted in lower infection efficiencies. These limitations should be taken into account when choosing the appropriate inoculation method for specific purposes. For resistance screening, laboratory tests proved to be a good alternative for field tests. The ranking of resistance levels for twenty plant genotypes was similar under laboratory and field conditions.

Phytophthora infestans potato wild Solanum spp. resistance detached leaves 

Copyright information

© Kluwer Academic Publishers 1999

Authors and Affiliations

  • Vivianne G.A.A. Vleeshouwers
    • 1
    • 2
    • 3
  • Willem van Dooijeweert
    • 1
  • L.C. Paul Keizer
    • 1
  • Luc Sijpkes
    • 1
  • Francine Govers
    • 2
  • Leontine T. Colon
    • 1
  1. 1.DLO – Centre for Plant Breeding and Reproduction Research (CPRO-DLO)WageningenThe Netherlands
  2. 2.Laboratory of PhytopathologyWageningen Agricultural University, Binnenhaven 9, 6709 PD Wageningen, The Netherlands; Graduate School Experimental Plant SciencesThe Netherlands
  3. 3.Graduate School Experimental Plant SciencesThe Netherlands (E-mail

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