Efficiency of a recurrent selection method to achieve resistance of common beans to Pseudocercospora griseola in a short period

ABSTRACT The angular leaf spot (ALS), caused by the fungus Pseudocercospora griseola, is one of most notable diseases common beans (Phaseolus vulgaris). effective strategy to control ALS quantitative disease resistance provided major and minor genes. One breeding for obtaining lines with durable P. griseola a recurrent selection that aims gradually assemble favorable alleles. In this study, were artificially inoculated grown in greenhouse under program accelerate cycle assimilate resistant conferring genes per generation. From initial population, three cycles evaluation, selection, intercross carried out plants phenotypically selected. Plants at V2 stage an isolate race 63-63. Selected transplanted into pots intercrossed reap next selection. Progenies obtained from base population (C0) subsequent (CI, CII, CIII) assessed degree symptoms field conditions. rate genetic progress was - 14.8% 5.3% field, respectively. Artificial inoculation allowed year, signifying promising method obtain ALS-resistant bean short period.