Diseases
Root rots are a complex of soil-borne fungal diseases affecting the underground part and the basal zone of plants. The infection manifests latently and leads to a 15–40% reduction in crop productivity.
Mentioned in descriptions 5 232 varieties reference book.
Root rots represent a group of pathologies affecting roots, tillering nodes, and underground internodes. The disease manifests as stand thinning, necrosis and browning of the root system, as well as the appearance of brown spots, streaks, and coatings on the basal part of the stem. External signs are often hidden and masked as nutrient deficiencies or winterkill, which is expressed in plant stunting, stem breakage, empty ears, and shriveled grain.
Disease development depends on a combination of abiotic factors and agronomic conditions. The infection actively progresses under excessive soil moisture, crop rotation violations, monoculture cropping, and the use of infected seed material. Mineral nutrient imbalance, especially potassium and phosphorus deficiency combined with nitrogen excess, reduces the natural immunity of plants, creating favorable conditions for pathogen activity across a wide temperature range.
In breeding practice, resistance to rots is often defined as tolerance—the ability of a plant to maintain productivity when infected. Variety evaluation is conducted on artificial and natural infection nurseries using quantitative disease scales from 1 to 9. Biophysical and conductometric methods are used for rapid analysis of the degree of tissue damage by pathogenic toxins.
Selection based on the description text, not official resistance ratings: such data is not available in registers. Mention indicates that the trait is discussed in the variety's sources; see the variety's profile for details on what is specifically stated.
Cucumis sativus L. · Cucumber
Shamshyna Anna Viacheslavovna, Portiankin Alieksei Evhenovych, Havrysh Serhii Fedorovych,
Astilbe simplicifolia Makino · Star astilbe
Mts. Holtmaat
Solanum lycopersicum L. · Tomato
Mercier Jean-Claude
Allium cepa L. · Onion
Paul Degreef
Citrullus lanatus (Thunb.) Matsum. & Nakai · Watermelon
Service Officiel de Controle (FR)
Cucumis sativus L. · Cucumber
Prutenskaia Nataliia Oleksiivna, Shamshyna Anna Viacheslavovna, Portiankin Alieksiei IEvhenovych, Havrysh Serhii Fedorovych,
Triticum aestivum L. · Bread wheat
Dolezhal IAn, Artemchuk Iryna Petrivna, Morhun Volodymyr Vasylovych,
Astilbe simplicifolia Makino · Star astilbe
Mts. Holtmaat
Solanum lycopersicum L. · Tomato
Erik Bastet
Solanum lycopersicum L. · Tomato
HAZERA SEEDS BV
Allium cepa L. · Onion
Ger Beemsterboer
Solanum lycopersicum L. · Tomato
Axia NL B.V.
Cucumis sativus L. · Cucumber
Barbara Khrzhanovs`ka, Yezhy Matchak, Tereza Bartlomiieschak,
Beta vulgaris Sugar Beet Group · Sugar beet
Barakhtians`kyi Mykola Pavlovych, Trokhymets` Ol`ha Ivanivna, Herasymenko Volodymyr Hryhorovych, Rybak Volodymyr Oleksiiovych, Lobodyn Oleh Kostiantynovych, Kulik Oleksandr Heorhiiovych, Roik Mykola Volodymyrovych,
Vicia faba L. var. equina St.-Amans · Horse bean
Saatzucht Gleisdorf
Zea mays L. · Maize
Domain de Sandro
Solanum lycopersicum L. · Tomato
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
Solanum lycopersicum L. · Tomato
HM Clause Inc (US)
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Szkółka Markiewicz Agnieszka Markiewicz-Januszewska
Solanum lycopersicum L. · Tomato
Axia NL B.V.
Cucumis sativus L. · Cucumber
FDB FRØ
Medicago sativa L. subsp. sativa · Alfalfa
PANAM FRANCE SARL
Solanum lycopersicum L. · Tomato
HM Clause SAS (FR)
Nicotiana tabacum L. · Tobacco
Instytut Uprawy Nawożenia i Gleboznawstwa Państwowy Instytut Badawczy