title: Comparative analysis of sour cherry cultivars on their ecological and biological indicators
abstract: Sour cherries developed in the northern hemisphere, an alloploid hybrid of dwarf sour cherries (Prunus fruticosa) and bird cherries (P. avium), born in the confluence of the two species. However, the ecological and, above all, cold tolerance of the ancestor of cultivated sour cherries is higher than that of wild cherries (De Candolle, 1894; Rehder, 1954; Terpó, 1974; Iezzoni et al., 1991; Faust &amp; Surányi, 1997). The cultivation limits are in the northern hemisphere 38-44. degree. The Carpath
journal: International Journal of Horticultural Science