title: The Role of Some Flavonoids and Oleuropein in the Formation of Frost Resistance of Olea europaea L.
abstract: The degree of participation of oleuropein, rutin, and cinaroside in the processes of formation of winter hardiness and frost resistance in four varieties of European olives Olea europaea L. and subspecies O. europaea subsp. сuspidata (Wall. and G. Don) Cif. was determined in natural and laboratory conditions. To assess the level of stress in the leaves, the proline content was determined, the maximum of which was noted in the weakly resistant subspecies O. europaea subsp. сuspidata. To identify 
journal: Физиология растений