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Development of a composite map in Vicia faba, breeding applications and future prospects

Román, B., Satovic, Z., Pozarkova, D., Macas, J., Dolezel, J., Cubero, J. I., Torres, A. M.
Theoretical and applied genetics 2004 v.108 no.6 pp. 1079-1088
Vicia faba, agronomic traits, chromosome mapping, disease resistance, females, genes, genetic markers, isozymes, linkage groups, loci, marker-assisted selection, microsatellite repeats, quantitative trait loci, random amplified polymorphic DNA technique
A composite map of the Vicia faba genome based on morphological markers, isozymes, RAPDs, seed protein genes and microsatellites was constructed. The map incorporates data from 11 F₂ families for a total of 654 individuals all sharing the common female parent Vf 6. The integrated map is arranged in 14 major linkage groups (five of which were located in specific chromosomes). These linkage groups include 192 loci and cover 1,559 cM with an overall average marker interval of 8 cM. By joining data of a new F₂ population segregating for resistance to ascochyta, broomrape and others traits of agronomic interest, have been saturated new areas of the genome. The combination of trisomic segregation, linkage analysis among loci from different families with a recurrent parent, and the analysis of new physically located markers, has allowed the establishment of the present status of the V. faba map with a wide coverage. This map provides an efficient tool in breeding applications such as disease-resistance mapping, QTL analyses and marker-assisted selection.