摘要：The evolution of the phenological stages of the fruit trees species is directly influenced by the climatic conditions so that the period is different from one species to another. The studies were carried out within the Research Station for Fruit Growing Iaşi, in the research fields for the main fruit tree species for the period 2018-2020. Unfavourable weather conditions during the flowering period led to damage to the viability of the buds, especially to the stone species due to the late spring frosts, which directly affected fruit production. In particular, apricots, peaches and sweet cherries suffered considerable losses. The results of the studies highlight the importance of resistance to extreme conditions of each species depending on the characteristics inherited from the biological parents.
关键词：buds; flowers; frost; trees species; viability.
