Abstract

This comparative study was performed on advanced oat breeding lines within the period of 2011-2013 in order to determine the productive potential of the studied genotypes and the variation of productivity, which determines the varietal adaptability. The results showed that the studied group of advanced oat lines was highly productive. The yield variation was most strongly affected by the genotype x environment interaction. Genotype played the greatest role in the variation of the traits: length of panicle, grain weight per panicle and 1000-grain weight. The greatest significance in yield formation was displayed in the number of spikelets per panicle, the number of grains per panicle and grain weight per panicle. The weakest contribution was observed for length of panicle. Lines 1104-19-1, N. Pr. 1 and 1402-2 appeared to have the highest productivity, which was relatively constant by years. Lines 1058 Re 1, 1089 Re 3 and 1176-1 were also highly productive, but they have specific responses to environmental changes.