Abstract
The reproduction of two Meloidogyne incognita populations from Crete, Greece was assessed on ten pepper cultivars in pots in controlled conditions. One was virulent on the Mi gene of resistant tomato and was unable to reproduce on pepper while the other was avirulent on the Mi gene and produced galls and egg masses in all pepper cultivars. It has been previously reported by other researchers that various isolates of M. incognita virulent on the Mi gene (selected or natural) have a zero or decreased reproduction on the nematode susceptible peppers California Wonder and Doux Longdes Landes. This observation is confirmed in our study with a population of M. incognita from Crete on commercially grown pepper cultivars.
Zusammenfassung
Die Vermehrungsrate zweier kretischer Populationen von Meloidogyne incognita wurde in Topfversuchen unter kontrol-lierten Bedingungen an zehn Pfeffersorten untersucht. Eine gegenüber dem Mi-Resistenzgen der Tomate virulente Population vermehrte sich nicht an Pfeffer, während die zweite, gegenüber dem Mi-Resistenzgen avirulente Population an allen zehn untersuchten Pfeffersorten Gallen und Eier bildete. Andere Autoren berichteten, dass mehrere, gegenüber dem Mi-Resistenzgen selektierte oder natürlich entstandene virulente Isolate von M. incognita sich nicht oder nur vermindert an den anfälligen Pfeffersorten California Wonder uznd Doux Longdes Landes vermehrten. Ihre Beobachtung wurde durch unsere Untersuchungen mit einer kretischen Population von M. incognita an kommerziell angebauten Pfeffersorten bestätigt.
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Tzortzakakis, E.A., Blok, V.C. Differentiation in two populations of Meloidogyne incognita from Greece in relation to reproduction on resistant tomato and pepper. J Plant Dis Prot 114, 276–277 (2007). https://doi.org/10.1007/BF03356229
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DOI: https://doi.org/10.1007/BF03356229