Studies of the impact of environmental conditions and varietal features of sweet cherry on the accumulation of vitamin C in fruits by using the regression analysis method

Abstract

<p class="042abstractstekst">The accumulation of vitamin C in sweet cherry fruits depends on the variety and environmental conditions. The aim of our research was to substantiate the rate of impact of weather factors as well as of varietal features on vitamin C accumulation in sweet cherry fruits. The varieties ʹKazkaʹ and ʹZabutaʹ, ʹKordiaʹ and ʹMirazhʹ were chosen as the best ones from among 33 varieties of early, medium and late term of ripening (7.31–10.67 mg 100 g<sup>-1</sup>) according to the average content of vitamin C in sweet cherry fruits. The studies found that the environmental conditions of the research years had the largest impact on the vitamin C content in the fruits of late and early ripening varieties, and in the fruits of medium ripening variety the vitamin C amount depended on the varietal features. The practicability of forecasting of vitamin C content in sweet cherry fruits on the average indices for a group of early and late maturity varieties, but not separately for every pomological variety, has been proven. For the medium ripening variety this index can be forecasted within each pomological variety. The models of dependence of vitamins C accumulation on the impact of meteorological parameters were evaluated on the basis of the principle components analysis and the least square method.</p>

Biochemical Composition of Sweet Cherry Leaves Depending on the Method of Soil Maintenance in an Organic Garden

“…One of the most popular fruit crops is the sweet cherry (Prunus avium L.), which is valued by consumers for its attractive appearance, high fruit taste, and nutritional value (Szpadzik et al, 2019;Pereira et al, 2020;Ivanova et al, 2021). Many scientists investigate the biochemical composition of sweet cherry fruits depending on the genetic characteristics of varieties, weather factors and conditions of the growing region (Picariello et al, 2016;Ivanova et al, 2020;Ivanova et al, 2022). Recently, there has been increasing attention to the content of biologically active substances (BAS) in the vegetative organs of fruit trees, namely sweet cherries (Prvulović et al, 2011;Bastos et al, 2015;Jesus et al, 2019), by-products of fruit growing (Yüksekkaya et al, 2009;Djilas et al, 2011;Afonso et al, 2019), and in the leaves of fruit trees (Dziadek et al, 2018;Dziadek et al, 2019;Uysal et al, 2020).…”

Assessment of the influence of weather factors on the quantitative indicators of sweet cherry fruits by Ridge regression

“…The average annual relative humidity in the region is 73%. Hydrothermal coefficient (HTC) according to G. T. Selyaninov is in the range from 0.22 to 0.77 (Ivanova et al, 2022).…”

“…Fruit products form an integral part of a full and balanced human diet. One of the key and favourite stone crops among consumers of fruit products is sweet cherries (Dziedzic et al, 2017;Szpadzik et al, 2019;Ivanova et al, 2022). The popularity of this fruit crop is conditioned upon not only the prominent taste qualities of fruits with an attractive appearance (Cao et al, 2015;Pereira et al, 2020;Ivanova et al, 2021a), but also upon the early ripening period (Kim et al, 2005 Bustamante et al, 2021).…”

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“…The average annual relative humidity in the region is 73%. Hydrothermal coefficient (HTC) according to G. T. Selyaninov is in the range from 0.22 to 0.77 (Ivanova et al, 2022).…”