Selection of virulence in Meloidogyne chitwoodi to resistance in the wild potato Solanum fendleri

• Published in: European journal of plant pathology Vol. 104; no. 7; pp. 645 - 651
• Main Authors: Janssen, G.J.W. (Centrum voor Plantenveredelings- en Reproduktieonderzoek DLO, Wageningen (Netherlands).), Scholten, O.E, Norel, A. van, Hoogendoorn, C
• Format: Journal Article
• Language: English
• Published: Dordrecht Springer 01.09.1998; Springer Nature B.V
• Subjects: Agronomy. Soil science and plant productions; Biological and medical sciences; Centrum voor Plantenveredelings- en Reproduktieonderzoek; Fundamental and applied biological sciences. Psychology; Genetics and breeding of economic plants; MELOIDOGYNE CHITWOODI; Nematodes; PATHOGENICITY; PATOGENICIDAD; Pest animals; PEST RESISTANCE; Plant diseases; Plant pathology; Plant reproduction; Plant resistance; Potatoes; POUVOIR PATHOGENE; RESISTANCE AUX ORGANISMES NUISIBLES; RESISTENCIA A LAS PLAGAS; SELECCION; SELECTION; SOLANUM; Varietal selection. Specialized plant breeding, plant breeding aims; Meloidogyne; Virulence; Varietal selection; Pathogenicity; Breeding line; Pest; Dicotyledones; Angiospermae; Helmintha; Pest resistance; Nemathelminthia; Spermatophyta; Tuber plant; Solanaceae; Solanum; Invertebrata; Nematoda
• ISSN: 0929-1873; 1573-8469
• DOI: 10.1023/A:1008625404330

The possibilities of selecting virulence from a virtually avirulent root-knot nematode population towards resistance in wild potato have been investigated. Single egg masses of Meloidogyne chitwoodi, which had occasionally been produced on roots of resistant Solanum fendleri gave rise to eight lines after one generation on tomato. Five lines were able to circumvent completely the resistance of S. fendleri 93-114-12 resulting in a susceptible response similar to that of the control potato cv Nicola. Subsequently, a resistance test with other resistant genotypes of S. fendleri, S. bulbocastanum, S. stoloniferum and S. hougasii revealed that the virulent lines were also able to break through the resistance in most other species, but clear differences were noticed between the virulent lines. The results suggest a simple inheritance of virulence in M. chitwoodi towards resistance in S. fendleri. However, more virulence factors are involved to explain the differences on the other Solanum species between the virulent lines. The implications of the ease to select virulence with respect to the practical use of resistance in potato breeding and growing are discussed.[PUBLICATION ABSTRACT]