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Developing a physical and functional map of the potato: Creating new sources for molecular markers to breed cultivars with multiple resistances and quality traits

The potato ranks fourth in world food production, after wheat, rice and maize. It has one of the richest genetic resources of any cultivated plant, and its wild relatives possess a broad spectrum of resistances to pests and diseases, tolerances to frosts and drought and many other valuable traits. However, compared to crop species that can be selfed, the introgression of new traits into the cultivated potato is extremely difficult. Polyploidy and outbreeding in potato are severe bottlenecksand marker-assisted breeding. The genetic map of the potato contains 10 000 AFLP markers and will be used to
generate a partial physical map. Strategically important genes/functions will
be placed on the map and may provide new sources to develop markers for marker -assisted breeding.

The project objectives are to:
develop a physical map of strategically important regions
develop a gene/functionmap to identify genes controlling resistance and quality traits
develop an internet-accessible database containing an integrated map with traits, markers and genes

Progress to Date
A preliminary physical map is ready.
Future actions include:
Imporving the physical map by trying to merge contigs in silico
Anchoring the physical map to the genetic map
Working towards the identification of resistance genesand defence-related genes, genes underlying QTLs for disease resistance, quality and drought stress.
The building of an accessible, searchable functional map for resistance.


Scientist responsible for the project

Binnenhaven 5 Box 8123
6700 ES Wageningen
Netherlands (The) - NL

Phone: +31 317482197
Fax: +31 317484254


Project ID QLRT-2001-01849
Organisation Wageningen University
Area 5.1.1
Start date 01 February 2003
Duration (months) 48
Total cost 3 890 481 €
Total EC contribution   3 092 243 €
Status Ongoing
Web address of the project

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