Plant Genome IV Conference Plant Genome IV Conference
Mapping of common probes among three common bean RFLP maps (Davis, Florida, and Paris) has allowed us to correlate and co-orient the various linkage groups of these maps. As a consequence, some 500 RFLP markers have been mapped in common bean, to which an additional 570 RAPD and 40 protein or phenotypic markers have been added. Among the latter are disease resistance factors including major genes as well as QTLs. These genes were mapped either directly because they segregated in the mapping population (BAT93 x Jalo EEP558) or indirectly via molecular tags that segregated in the population. Diseases for which resistance genes were mapped include bean common mosaic virus, anthracnose, rust, and common bacterial blight. In addition, QTLs for Rhizobium nodulation have also been mapped. The relative location of these genes on the common bean genetic linkage map will be discussed.