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Identification of RAPD markers linked to the Uvf-1 gene conferring hypersensitive resistance against rust (Uromyces viciae-fabae) in Vicia faba L.

Author:
Avila, CM  Sillero, JC  Rubiales, D  Moreno, MT  Torres, AM  


Journal:
THEORETICAL AND APPLIED GENETICS


Issue Date:
2003


Abstract(summary):

Bulk segregant analysis was used to identify random amplified polymorphic DNA (RAPD) markers linked to a gene determining hypersensitive resistance in Vicia faba line 2N52 against race 1 of the rust fungus Uromyces viciae-fabae. The monogenic nature of the resistance was determined by analyzing the F-2 population from a cross between resistant line 2N52 and susceptible line VF-176, and further confirmed in the F-2:3-derived families. Linkage of the RAPD markers was confirmed by screening 55 F-2 plants segregating for resistance. Three RAPD markers (OPD13(736), OPL18(1032) and OPI20(900)) were mapped in coupling phase to the resistance gene for race 1 (Uvf-1). No recombinants between OPI20(900) and Uvf-1 were detected. Two additional markers (OPP02(1172) and OPR07(930)) were linked to the gene in repulsion phase at a distance of 9.9 and 11.5 cM, respectively. The application of marker-assisted selection to develop new faba bean varieties with rust resistance genes is discussed.


Page:
353---358


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