Strawberry assessment for biochemical and organoleptic features of berries in the Orel region

The article presents characteristics of 20 domestic and foreign strawberry cultivars of different maturation periods and grown in the middle of Russia in terms of the content of soluble solids, sugars, organic acids, ascorbic acid, sugar-acid index and evaluation of the organoleptic properties of berries. As a result of a three - year study (2017-2019), cultivars with high (more than 100 mg/100 g) ascorbic acid content were identified: Rosinka (107.63 mg/100 g), Kimberly (103.53 mg/100 g), Rubino civ (141.37 mg/100 g); soluble solids (more than 11.0%) - Marmolada (11.2%), Rubino civ (14.0%); sum of sugars (more than 8.50%) - Clery (9.01%), VimaZanta (9.49%), Marmolada (9.03%), Honeyoye (8.50%), Jonsok (8.90%) and control cultivar RubinovyKulon (9.21%). High taste qualities were noted in Rosinka (4.7 points), Honeyoye (4.7 points) and Sara (4.7 points); NF 311 (4.9 points) stood out for fruit appearance; Sara (4.8 points) was the most fragrant. The selected promising cultivars can be recommended as sources of economically important characteristics. High positive correlation coefficients were found, confirming the high association of features between the value of the sugar-acid index and the content of monosaccharades (+0.79***), the sugar-acid index and the total amount of sugars (r=0.84***) and soluble solids (+0.70***), as well as a high inverse relationship between the content of organic acids and the sugar acid index (r=-0.81***). An average positive dependence (r=+0.51**) with a fairly high degree of confidence was found between the content of sugars and ascorbic acid, and a weak negative dependence (r=-0.024) was found between taste and titratable acidity.