It was confirmed during laboratory tests that two cultivars of spring triticale (Kargo and Migo) developed the highest level of antibiosis against Sitobion avenae, whereas the lowest one was found for Gabo seedlings. Values of daily fecundity (DF) and intrinsic rate of natural increase (rm) were significantly higher for aphids developed on the susceptible cultivar Gabo. Field experiments have shown that cultivars with lower level of antibiosis (Gabo and Mieszko) evolved a stronger ability to recovery of plant injuries and reduction of yield loss caused by the grain aphid. On the other hand, we have found lack differences in density of S. avenae migrantes on the tested cultivars. Thus, these results demonstrate that plants of spring triticale develop two mechanisms of resistance against aphids: antibiosis and tolerance.