Abstract
The promotion of a cherry assortment with constant yield, low vigour of the trees, self-fertility and high productivity, resistance to biotic and abiotic factors and with ripening at the extremities of the cherries maturation season, represents a permanent concern of researchers. In this context, considering the current patrimonial situation and the perspectives of growing sweet cherry trees in the Iasi area, under a privatized agriculture, the selection of new cultivars to be introduced in the assortment requires a special attention. Analyzing the values of the fertility index during the three years of study (2018 – 2020) it was observed that all the cherry cultivars excepting ‘Kordia’ are highly fertility with values between 30.0% and 66.2%. The cultivars ‘Bucium’, ‘Croma’, ‘Van’, ‘Maria’, ‘Stella’, ‘Cătălina’, ‘Margonia’ and ‘George’ have large fruits (over 7 g and over 22.5 mm) and ‘Kordia’ (6.3 g and 21.1 mm), ‘Scorospelka’ (6.2 g and 22.3 mm), ‘Cetăţuia’ (6.0 g and 22.0 mm) and ‘Rivan’ (5.9 g and 21.6 mm) have small fruits. For ‘Scorospelka’, ‘Cetăţuia’ and ‘Rivan’, the fruits are large in comparison with other early cultivars. The values of soluble dry substance (SDS) varied between 13.6% (‘Scorospelka’ and ‘Rivan’) and 18.9% (‘Maria’). However, statistically, cultivars ‘Maria’ (18.9%), ‘Bucium’ (18.3%) and ‘George’ (18.1%) recorded superior values in comparison with all the other cultivars.
Highlights
The promotion of a sweet cherry assortment suitable to yield every year, with low vigour trees with valuable self-fertile and productive cultivars, resistant to biotic and abiotic factors and with ripening time at the extremities of the cherries maturation season represents a permanent concern of domain specialists (Cociu, 1990; Budan et al, 1997; Budan & Grădinariu, 2000; Kazantzis et al, 2011; Petre, 2006)
In this context, considering the current patrimonial situation and the perspectives of growing sweet cherry trees in the Iasi area, under a privatized agriculture, the selection of new cultivars to be introduced in the assortment requires a special attention
From a thermal point of view, during March and the beginning of April in 2019 and 2020, late spring frosts were recorded while the sweet cherry tree already started the vegetation
Summary
The soil and climate conditions from the Iasi county are favourable for growing sweet cherry trees, excepting a few years with natural disasters (Dumitrescu, 1981; Petre, 1987; Iurea et al, 2009). The promotion of a sweet cherry assortment suitable to yield every year, with low vigour trees with valuable self-fertile and productive cultivars, resistant to biotic and abiotic factors and with ripening time at the extremities of the cherries maturation season represents a permanent concern of domain specialists (Cociu, 1990; Budan et al, 1997; Budan & Grădinariu, 2000; Kazantzis et al, 2011; Petre, 2006). In this context, considering the current patrimonial situation and the perspectives of growing sweet cherry trees in the Iasi area, under a privatized agriculture, the selection of new cultivars to be introduced in the assortment requires a special attention
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