A high-resolution map of the Grp1 locus on chromosome V of potato harbouring broad-spectrum resistance to the cyst nematode species Globodera pallida and Globodera rostochiensis

• DOI: 10.1007/s00122-009-1026-1
• Publication Date: 2009-04-11T05:21:43Z
• Authors: Anna Finkers-Tomczak; Sarah Danan; Thijs van Dijk; Amelework Beyene; Liesbeth Bouwman; Hein Overmars; Herman van Eck; Aska Goverse; Jaap Bakker; Erin Bakker
• Keywords: Globodera pallida; Globodera rostochiensis; Potato cyst nematode

The Grp1 locus confers broad-spectrum resistance to the potato cyst nematode species Globodera pallida and rostochiensis is located in GP21-GP179 interval on short arm of chromosome V potato. A high-resolution map has been developed using diploid mapping population RHAM026, comprising 1,536 genotypes. flanking markers GP21 GP179 have used screen genotypes for recombination events. Interval resistances G. Pa2 Ro5 resulted two nearly identical LOD graphs with highest score just north marker TG432. Detailed analysis 44 recombinant showed that could not be separated same location between SPUD838 It suggested quantitative both at mediated by one or more tightly linked R genes might belong NBS-LRR class.