This study followed at the degree of grafting success, the assessment of the percentage of grafted vines obtained when harvesting from the nursery, the analysis of the quality criteria of the grafted vines and the accumulations, respectively the distribution of carbohydrates in the grafting area taking into account the cultivar/rootstock combination. In the study we used biotypes of local hybrids identified in the western part of Romania: „Delevar negru de Prunișor”, „Novă neagră de Prunișor”, „Izabelă neagră de Prunișor”, „Negru bătut de Roșia”, „Aripat roz de Roșia”, which were grafted on American rootstocks (140Ru, SO4, 5 BB). Regarding grafting success, the percentage was 100,0% for cult ivar/rootstock combinations: „Delevar negru de Prunișor” /SO4, „Negru bătut de Roșia” /SO4, „Aripat roz de Roșia”/SO4, „Negru bătut de Roșia” /5 BB și „Aripat roz de Roșia”/5 BB. The percentage of grafted vines that developed a root system and shoots (%) varied from 86,0% in the variety „Negru bătut de Roșia” /SO4 to 27,1 % in the variety „Aripat roz de Roșia” /140Ru. The distribution of carbohydrates was balanced in the variants: „Delevar negru de Prunișor” /140Ru, „Delevar negru de Prunișor” /SO4, „Delevar negru de Prunișor” /5 BB, „Novă neagră de Prunișor”/SO4, „Novă neagră de Prunișor”/5 BB, „Izabelă neagră de Prunișor” /SO4, „Negru bătut de Roșia” /140Ru, „Negru bătut de Roșia” /SO4, „Aripat roz de Roșia” /SO4 și „Aripat roz de Roșia” /5 BB. The percentage of grafted vines that developed a root system and shoots (%) increased with increasing carbohydrate accumulation in the area of the grafting point. The American rootstock SO4 was found to have the best grafting compatibility.