Characterization of the Angular Leaf Spot Resistance Gene Present in Common Bean Cultivar Ouro Negro

• DOI: 10.5539/jas.v5n2p19
• Publication Date: 2013-01-15T21:35:35Z
• Authors: Demerson Arruda S...; Carlos Alexandre ...; Bruno Pereira Balbi; Klever Márcio Ant...; Everaldo Gonçalve...; Maurilio Alves Mo...
• Keywords: Introgression; Germ plasm

Angular leaf spot (ALS), incited by the fungus Pseudocercospora griseola, is a major disease affecting common bean. Important resistance sources have been identified and characterized: AND 277, BAT 332, Cornell 49-242, MAR-2, Mexico 54. P. griseola presents high physiological variability. The control of this kind pathogen requires continuous evaluation, including monitoring characterization pathogenic variability, eventual germplasm introgression genes in adapted cultivars. Cultivar Ouro Negro currently being used as an ALS source Brazil. This work aimed to characterize gene present cultivar relation other five sources. These cultivars were crossed with ‘Ouro Negro’ (allelism tests) susceptible cv. Rudá (inheritance studies) their segregation patterns evaluated. inheritance studies allelism tests indicate that harbors at least one locus which distinct from those