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The dependence of the yield in the F1 progeny on commercially significant traits of the parent cultivars in the cross Hybrid 28-13 x Russalka was studied by means of Path-analysis. It was found that the grape yield from Hybrid 28-13 was positively directly and indirectly influenced to the greatest extent by the traits average cluster weight, total number of fruiting shoots, clusters and buds. The two parent cultivars influenced to a different extent the formation of separate traits in the F1 progeny.
Positive correlations between the seedlings and parent cultivars were reported in the traits flowering – berry softening, acids, total number of buds and shoots, and direct positive influences – in the shoot fertility coefficient, berry length, flowering – berry softening, acids and total number of buds.