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European Journal of Plant Pathology

, Volume 113, Issue 1, pp 101–105 | Cite as

Occurrence of Resistance-breaking Populations of Root-knot Nematodes on Tomato in Greece

  • Emmanuel A. TzortzakakisEmail author
  • Mohamed A. M. Adam
  • Vivian C. Blok
  • Charalampos Paraskevopoulos
  • Kostas Bourtzis
Short communication

Abstract

Nine populations of Meloidogyne spp. from Greece have been identified as M. javanica or M. incognita using either isozyme phenotypes or the sequence characterized amplified region-polymerase chain reaction (SCAR-PCR) technique. Virulence against the Mi resistance gene was assayed by pot experiments in controlled conditions and revealed the ability of five populations of M. javanica and one population of M. incognita to reproduce on tomato cultivars containing that gene. A resistance-breaking population of M. incognita is reported for the first time in the country; the M. javanica populations constitute new records for the Greek mainland.

Keywords

identification isozyme phenotype Meloidogyne incognita Meloidogyne javanica Mi gene SCAR-PCR virulence 

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Copyright information

© Springer 2005

Authors and Affiliations

  • Emmanuel A. Tzortzakakis
    • 1
    Email author
  • Mohamed A. M. Adam
    • 2
  • Vivian C. Blok
    • 2
  • Charalampos Paraskevopoulos
    • 3
  • Kostas Bourtzis
    • 3
  1. 1.Nematology Laboratory, Plant Protection InstituteNational Agricultural Research FoundationHeraklion CreteGreece
  2. 2.Scottish Crop Research InstitutePlant Pathogen Interactions ProgramDundeeUK
  3. 3.Department of Environmental and Natural Resources ManagementUniversity of IoanninaAgrinionGreece

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