Journal ArticleDOI
An International Scheme for Identifying and Classifying Pathotypes of Potato Cyst-Nematodes Globodera Rostochiensis and G. Pallida
TLDR
Following joint tests in the Netherlands, Germany and the United Kingdom a new scheme is proposed for naming pathotypes of potato cyst-nematodes, with several of the pathotypes recognised in the British, Dutch and German National Schemes are the same.Abstract:
Following joint tests in the Netherlands, Germany and the United Kingdom a new scheme is proposed for naming pathotypes of potato cyst-nematodes. Pathotypes of Globodera ( = Heterodera) rostochiensis and G. pallida are designated separately using a simple nomenclature Ro1 to Ron for G. rostochiensis and Pa1 to Pan for G. pallida. Currently seven clones are used to differentiate five pathotypes of G. rostochiensis and three of G. pallida. Several of the pathotypes recognised in the British, Dutch and German National Schemes are the same. Results of pathotyping tests may show considerable variation; adequate replication and standardisation of method are essential. With an internationally used scheme it is highly desirable that new pathotypes or differential clones are added only after testing at Institutes in several countries.read more
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Journal ArticleDOI
Localization by restriction fragment length polymorphism mapping in potato of a major dominant gene conferring resistance to the potato cyst nematode Globodera rostochiensis
Amalia Barone,Enrique Ritter,U. Schachtschabel,Thomas Debener,Francesco Salamini,Christiane Gebhardt +5 more
TL;DR: A major dominant locus conferring resistance against several pathotypes of the root cyst nematode Globodera rostochiensis was mapped on the linkage map of potato using restriction fragment length polymorphism (RFLP) markers.
Journal ArticleDOI
Mapping of the cyst nematode resistance locus Gpa2 in potato using a strategy based on comigrating AFLP markers
J.N.A.M. Rouppe van der Voort,P.J.C.C. Wolters,R.T. Folkertsma,Ronald C. B. Hutten,P. van Zandvoort,H. Vinke,Kostya Kanyuka,Abdelhafid Bendahmane,Evert Jacobsen,R. Jansen,J. Bakker +10 more
TL;DR: It is shown that these two nematode resistance loci are unlinked and that Gpa2 is linked to the Rx1 locus conferring resistance to potato virus X, and that a reference collection of potato AFLP markers may be a valuable tool for mapping studies in potato.
Journal ArticleDOI
Identification of RFLP markers closely linked to the H1 gene conferring resistance to Globodera rostochiensis in potato
TL;DR: One of major dominant genes, H1, from S. andigena, was mapped to a distal position on potato chromosome V using restriction fragment length polymorphism (RFLP) markers and was linked without recombination to the H1 locus.
Journal ArticleDOI
Conceptual and practical aspects of variability in root-knot nematodes related to host plant resistance.
TL;DR: In this paper, the root-knot nematodes are identified and several host resistance genes in diverse crops are identified, including pyramiding genes in a crop and in a cropping system with resistance gene specificity to nematode species and populations.
Journal ArticleDOI
Breeding for nematode and virus resistance in potato via anther culture.
G. Wenzel,H. Uhrig +1 more
TL;DR: Using anther culture it is demonstrated that doubled monohaploid clones can be produced which possess the resistance in the homozygous condition, and the potentiality for regeneration is under genetic control and can be utilized by combination breeding.