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.
hybrids between Solanum lycopersicum L. and S. habrochaites S. Knapp & D.M. Spooner
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Solanum lycopersicum L. · Tomato
Kim, Il Yong
Lactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Capsicum annuum L. · Bell pepper
RIJK ZWAAN ZAADTEELT EN ZAADHANDEL B.V.
Solanum lycopersicum L. · Tomato
Syngenta Seeds B.V.
Lactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel BV (NL)
hybrids between Solanum lycopersicum L. and S. habrochaites S. Knapp & D.M. Spooner
SEMILLAS FITO, S.A.
Glycine max (L.) Merr. · Soybean
Semences Prograin Inc
Vicia faba L. · Broad bean
Saatzucht Gleisdorf
Lactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
hybrids between Solanum lycopersicum L. and S. habrochaites S. Knapp & D.M. Spooner
Sakata Vegetables Europe SARL (FR)
Solanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Solanum lycopersicum L. · Tomato
MAURIZIO BACCHI
Triticum aestivum L. · Bread wheat
Marinin Liubov Ivanivna, Lytvynenko Raisa Ivanivna, Kostiuk Stanislav Vasyl`ovych, Parfentiev Mykhailo Hryhorovych, Babaiants Lazar Tihranovych, Reshetnikova Valentyna Semenivna, Ptashenchuk Oleksandr Mykytovych, Honcharuk Nina Oleksandrivna, Lytvynenko M
Solanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
hybrids between Solanum lycopersicum L. and S. habrochaites S. Knapp & D.M. Spooner
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Beta vulgaris Sugar Beet Group · Sugar beet
KWS SAAT SE and CO KGAA
Phaseolus vulgaris L. · Common bean
WAVEREN| van Waveren Saaten GmbH
Lactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Trifolium pratense L. · Red clover
Institute of Grassland & Environmental Research Welsh Plant Breeding Station
Glycine max (L.) Merr. · Soybean
Elroy Cober
Prunus domestica L. subsp. insititia (L.) C. K. Schneid. · Damson
CONSEJO SUPERIOR DE INVESTIGACIONES CIENTIFICAS(CSIC)
Solanum lycopersicum L. · Tomato
Syngenta Seeds B.V.
Hibiscus L. · Hibiscus
Hansen Hans A