Immunological evaluation of collection and selection material of radish for resistance to the bacterial soft rot
Year: 2024
Type: article
Abstract: The studies were conducted to assess the resistance of collection and selection material of radish to bacterial rot. The work was carried out in 2020-2023 in the Moscow Region. The material included 5 collection and 21 selection samples, as well as 10 varieties bred by the Federal Scientific Centre for Vegetable Growing; bacterial isolates isolated from affected root crops of radish, horseradish and daikon. The radish plants were grown under controlled conditions and in open ground. Artificial infection of root crops and isolated leaves was carried out with 2-day pathogen cultures (LB medium). Records were kept on the 7th day after infection on a 5-point scale, the volume and area of the affected zone were measured, and the samples were ranked into resistance groups. Among the isolates of Pectobacterium spp. The most aggressive towards radish root crops was isolate 1, obtained from daikon (the average damage score was 2-4 times higher than that of the others). The share of relatively resistant samples with infection of the outer covers of the halves was 50%, and with infection of the parenchyma of the disks – 21%. Lines C №86 and №89, hybrid Cherriette F1, inbred lines L-271 and L-270 and sample №203 were classified as relatively resistant to bacterial rot of root crops. Romans F1 and Mavr demonstrated high resistance of leaves with a damaged area of less than 5%, which is 6 times lower than that of susceptible samples. Root crops of most of the studied radish varieties and hybrids from open ground were characterised by a higher degree of resistance (0.2-2.0 points) compared to root crops grown in a greenhouse (0.6-3.0 points). Mokhovsky, Feya, Mavr and Gloriette F1 were distinguished by the stability of the trait manifestation on different agricultural backgrounds with an average root crop damage index of 0.7-1.0 points, which is lower than that of the standard variety Variant (1.2 points) and the susceptible hybrid Rordar F1 (1.9 points).
Institution: Federal Scientific Center for Vegetable Growing
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: hybrid
OpenAlex ID: W7203780893