Abstract
Ry sto is a dominant gene which confers resistance to potato virus Y (PVY) in potato. We have used bulked segregant analysis of an F1 tetraploid potato population to identify three AFLP markers linked to and on either side of Ry sto . The tomato homologue of one of these AFLP markers was assigned to linkage group XI by analysis of an F2 mapping population of tomato, suggesting that Ry sto is also on chromosome XI of the potato genome. This map position was confirmed by the demonstration that Ry sto was linked to markers which had been previously mapped to chromosome XI of the potato genome. Four additional AFLP markers were identified that were closely linked to Ry sto in a population of 360 segregating progeny of a potato cross between a resistant (Ry sto ) and a susceptible parent. Two of these markers were on either side of Ry sto , separated by only a single recombination event. The other two markers co-segregated with Ry sto .
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Received: 29 July 1996 / Accepted: 30 August 1996
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Brigneti, G., Garcia-Mas, J. & Baulcombe, D. Molecular mapping of the potato virus Y resistance gene Rysto in potato. Theor Appl Genet 94, 198–203 (1997). https://doi.org/10.1007/s001220050400
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DOI: https://doi.org/10.1007/s001220050400