Selection of red beet seed material for resistance to cercospora leaf spot

Posted on 22.12.2025 by admin
UDC 635.11:632.488
https://doi.org/10.25630/PAV.2025.49.25.006

Timakova L.N.

Cercospora beticola is a common disease of table beet, causing significant losses of the crop - up to 30-40% in normal years and up to 50% in periods of epiphytotics. Due to climate change and the use of susceptible hybrids of foreign breeding, the problem of resistance to this disease becomes especially relevant. The purpose of the study was to assess the resistance of inbred lines of table beet to cercospora leaf spot in field conditions and to select the most resistant samples.The assessment of table beet varieties for resistance to cercospora leaf spot was carried out in open-field conditions at the All-Russian Research Institute of Vegetable Growing, a branch of the Federal Research Center for Vegetable Growing (Moscow Region). The article presents the results of several years of research (2018, 2020, 2022, and 2024) using a 5-point scale of damage. The object of the research was single-sprout inbred lines of 1-6 generations, the sources of which were the varieties Khavskaya, Kreolka, Monopoli, Modana, 594, hybrids Red Mario, Monty, Red Arias. An evaluation of beetroot lines over a 3-year period revealed instability in the expression of the resistance trait in lines 708, 713, 715, and 736. The most stable average damage score over the years was observed in lines 714, 734, 790, and 805. As a result of selection, lines (Nos. 713, 714, 715, and 734) with increased resistance to cercospora leaf spot were isolated as starting material. It was found that resistant lines can split into susceptible forms, emphasizing the need for ongoing selection.

Key words: table beet, cercospora leaf spot, resistance, breeding, laboratory methods, field trials.

Timakova L.N., Cand. Sci. (Agr.), senior research fellow of the department of breeding and seed growing, ARRIVG – branch of FSBSI FSVC, breeder of Poisk company. E-mail: ljubovtimakova@rambler.ru

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For citing: Timakova L.N. Selection of red beet seed material for resistance to cercospora leaf spot. Potato and vegetable. 2025. No8. Pp. 54-57. https://doi.org/10.25630/PAV.2025.49.25.006 (In Russ.).

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