Induced mutations for disease resistance in beans (Phaseolus vulgaris L.)

Susceptibility to Golden Mosaic Virus and to common bacterial blight are problems for the productive cultivation of Phaseolus vulgaris in Latin America. A mutant TMD-1 selected from the EMS treated variety ''Carioca'' shows only very few virus symptoms, but unfortunately is lower yielding than susceptible varieties even under incidence of the disease. The mutant is used in cross breeding. New mutation experiments have been started to obtain other mutants with resistance to Golden Mosaic Virus and to bacterial blight. (author)