1 research outputs found
Cultivar features of polyphenolic compounds and ascorbic acid accumulation in the cherry fruits (Prunus cerasus L.) in the Southern Steppe of Ukraine
Received: June 1st, 2022 ; Accepted: September 26th, 2022 ; Published: October 14th, 2022 ; Correspondence: [email protected] is a popular and widespread fruit crop in many European countries. Significant
areas of its plantation are located in the Southern Steppe subzone of Ukraine. Modern biochemical
research aims to determine the amplitude of cherries varietal difference within the studied species
and determine selection possibilities for the most important chemical components. In this regard,
the study of fruits biochemical composition of different cherries cultivars is relevant. The aim of the
research was to build a mathematical model based on Multiple linear regression method, which
reveals the degree of weather factors influence on the dynamics of polyphenolic compounds and
ascorbic acid accumulation in cherries fruits in the Southern Steppe subzone of Ukraine and in
regions with similar hydrothermal parameters. The cultivar ‘Ihrushka’ was characterized by the
lowest variability in the concentration of polyphenolic compounds with the value of the variation
coefficient of 9.9%. The optimal average concentration of polyphenolic compounds at the level of
224.6 mg 100 g-1 had fruits of the cherry cultivar ‘Siianets Turovtsevoi’ (Vp – 12.8%). Fruits of the
‘Vstrecha’ cultivar were characterized by the optimal average concentration of ascorbic acid at the
level of 9.6 mg 100 g-1 and variability of the indicator 14.0%. The dominant influence of varietal
characteristics on the polyphenolic compounds accumulation in cherry fruits has been established.
The share of the factor impact B was 41.3%. It was determined that weather conditions with a share
of influence of 69.2% are crucial for the formation of the ascorbic acid. The correlation analysis
showed the presence of a linear correlation between seven weather factors (Хі, i = 1..7) and the
concentration of polyphenolic compounds (Y1) and ascorbic acid (Y2) in cherry fruits. The values
of the pairwise correlation coefficients rY1Xi
, rY2Xi i = 1. .7 were within the interval [-0.55; 0.55],
which showed the presence of an impact between these weather factors and the studied indicators.
The average monthly precipitation in June became decisive for the accumulation of
polypolyphenolic compounds (∆X2 = 35.2%). The average monthly amount of precipitation in May
was determined to be the most important for the formation of the ascorbic acid level (∆X1 = 37.1%)