Abstract
The article presents the results of a comparative evaluation of five promising hybrids of Chaenomeles japonica (Thunb.) Lindl. ex Spach (2-44-05, 3-27-05, 5-50-03, 1-64-05, 3-17-05), identified according to a complex of commercially valuable traits (winter hardiness, yield, fruit weight, low thorniness, resistance to fruit rot), and Likhtar variety in the conditions of Belarus. Significant differences have been found in terms of the amount of substances accumulated in fruits. The samples were characterized by low and very low levels of solids and sugars in combination with high acidity, with the exception of the Likhtar variety and hybrid 3-17-05, that show an average level, as well as a very low content of ascorbic acid. Hybrid 3-17-05 has been singled out according to a set of 6 indicators (solids, soluble solids, sugars, titrate acidity, sugaracid ratio, phenolic compounds); hybrid 3-27-055 – according to a set of 5 indicators (solids, soluble solids, sugars, ascorbic acid, phenolic compounds). Hybrids 3-27-05 and 5-50-03 were the best in terms of the complex of biologically active substances (ascorbic acid, pectin and phenolic compounds).
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