Research on the eco-physiological evolution of some sweet cherry cultivars under the influence of climate changes

Abstract

Knowing the vegetation course of the sweet cherry cultivars is a major desideratum and a basic condition in the zoning of a fruit crop in order to capitalize on the biological production potential. The research of this study was carried out during the years 2022 and 2023 and aimed at the development of the phenological stages, the quantification of the sum of the temperature degrees and the total amount of precipitation, the stomatal conductance at the leaf level as well as the evaluation of the fruit quality and the productivity of three cultivars of sweet cherry trees ('Van', 'Andreiaș' and 'Margonia') from the Research Station for Fruit Growing Iași, located in the N -E area of Romania. The climatic conditions of the studied years (2022-2023) confirm the global context of climate change, the average annual temperature having values of 11.4°C, with a positive deviation of +1.7°C more than the multi-annual average (2000-2020) and total precipitation totaled 440 mm, with a deficit of -77.5 mm from the reference value, thus influencing the phenological patterns, physiological processes and productivity of the sweet cherry crop.