LAUSR

ABSTRACT Turkey has quite a rich genetic diversity in various fruit and plant species. One of them is species in the Prunus genus. In addition, Turkey is the greatest or significant producer of many stone, nut and some fruit species. This study was conducted to determine the effects of intra-species hybridizations of some apricot (Prunus armeniaca L.) cultivars and inter-species hybridization of apricot cultivars with paternal parent plum (Prunus salicina L.) cultivars on fruit set and pomological properties of apricots. In both years of experiments, differences were observed in fruit set ratios of intra and inter-species hybrid combinations based on paternal parent cultivars. Among the apricot × plum inter-species hybrid combinations, the Black Amber plum cultivar was found to be prominent for the investigated parameters. Among the apricot × apricot intra-species hybrid combinations, Palstein group hybrids yielded greater values for the investigated parameters. Present findings may guide further researches to be conducted on intra and inter-species hybridizations of apricots and plums.