In order to study the effects of hybridisation on bush snap bean genotypes, a test was conducted at PESAGRO-RIO. Four bush snap bean cultivars, Alessa, Andra, Cota and Cascade were used as parents and crossed in a diallel mating design without reciprocals. Parental cultivars and F1 hybrids were planted under field conditions and eight agronomic characters were evaluated. Significant effects for general combining ability (GCA) were identified for pod number, pod weight, pod length, pod diameter, days from planting date to flowering, and plant height. For specific combining ability (SCA), there was significance for all characters, showing that dominance/epistatic effects were involved in control of characteristics. For all traits evaluated, 'Cota' was considered the best parental. For yield characters, two hybrids, 'Alessa' x 'Cascade' and 'Cota' x 'Cascade' showed the best results.
Phaseolus vulgaris L.; diallel crosses; pod yield; general combining ability; specific combining ability
