Collar rot of common bean (Phaseolus vulgaris), caused by Sclerotium rolfsii, can induce high production losses. The control measures, commonly recommended for this disease, have not been providing effective results. The objective of the present work is to identify the sources of resistance to S. rolfsii in common beans. The isolates were obtained from the stem of infected plants, coming from different areas of the State of Pernambuco, and the inoculation was done by deposition of ten sclerotia on the collar of previously wounded plants. The severity of the disease was evaluated through note scale varying from 1 to 9, proposed by the CIAT and the data were transformed into the Mackinney disease index. All the cultivars and lines have shown susceptibility to the isolates from Zona da Mata and Agreste, which were considered more virulent. The cultivars and lines which showed resistance to the isolate from Sertão were: IPA-10, Corrente, Mão Curta, Gordo and L-96029, which wer considered less virulent.
