A. V. Kornev1 , V. I. Leunov2 , L. M. Sokolova1, A. N. Khovrin1
1 All-Russian Scientific Research Institute of Vegetable Growing – branch of the Federal Scientific Center of Vegetable Growing, Vereya village, Moscow region, Russia
2 The journal “Potatoes and Vegetables”, Vereya village, Moscow region, Russia
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Volume 25 No. 4
Date of paper submission: 04.07.2024, date of review: 10.03.2025, date of acceptance: 31.03.2025.
Published: 04/30/2025
Abstract. An increase in temperatures may lead to a change in the geographical distribution of various types of fungal phytopathogens. As a result, the degree of their development can reach 70–80 %, and the yield decreases by 35–50 %. There is an assertion that the sugar content in root crops of the same variety is determined by weather conditions, whereas the issues of the relationship between the chemical composition of root crops and resistance to pathogens are practically absent in the scientific literature. The purpose of the research: to identify the influence of agro-climatic conditions of the year on the biochemical composition of table carrot root crops and resistance to pathogens of the genera Fusarium and Alternaria on the example of lines and varieties-populations. Methods. The studies were carried out on lines and varieties of table carrots of the average ripening period of the Berlikum/ Nantskaya variety type in 2014–2022 at the All-Russian Scientific Research Institute of Vegetable Growing – branch of the Federal Scientific Center of Vegetable Growingn the laboratory of root crops. The crops were placed on alluvial meadow soils of the Ramenskoe district of the Moscow region in Bogara conditions. The area of the accounting plot is 7 m2 . The repetition is threefold. The main elements of disease accounting were the prevalence, degree of lesion, and intensity of development. The dry substance was determined by drying in a thermostat. The content of β-carotene was determined by spectrophotometric method. As a result of the research, an insignificant effect of agro-climatic conditions on the change in carotene content was proved, so in the lines 1238 P, 1238 V (18.2 mg/100 g) and the Losinoostrovskaya 13 variety (19.4 mg/100 g). The average variability in terms of dry matter content was noted from 10.7 % (line 8 V) to 12.2 % (line 1238 P). The average variability on the basis of sugar content was revealed. During the immunological assessment, samples were identified that belong to the group of weakly susceptible with a lesion score from 0.9 to 1.4: 690 V, 690 P, 8 V, 200 P, 1238 V, 1238 P, 1585 V, 1585 P, 535 P, 661 V, 1268. Scientific novelty The influence of agroclimatic factors from years of research on resistance to pathogens of the genera Fusarium and Alternaria, the content of carotene, dry matter and sugar in the root crops of table carrots has been determined.
Keywords: table carrots, line, variety, resistance to pathogens, biochemical composition, weather conditions
For citation: Kornev A. V., Leunov V. I., Sokolova L. M., Khovrin A. N. The influence of agroecological conditions on the biochemical composition and resistance to pathogens of table carrot root crops. Agrarian Bulletin of the Urals. 2025; 25 (04): 539‒551. https://doi.org/10.32417/1997-4868-2025-25-04-539-551(In Russ.)
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