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.
Raphanus sativus L. var. sativus · Radish
Wim van der Heijden
Beta vulgaris Sugar Beet Group · Sugar beet
SESVANDERHAVE NV-SA, BE
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
STRAWBERRY SCIENCES LLC
Medicago sativa L. · Alfalfa
NORTH AMER.PLANTS
Trifolium pratense L. · Red clover
SELGEN A.S
Cucumis sativus L. · Cucumber
HM.CLAUSE
Solanum lycopersicum L. · Tomato
Enza Zaden, NL
Beta vulgaris Sugar Beet Group · Sugar beet
SAS FLORIMOND-DESPREZ Veuve et Fils
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Marionnet S.A.S
Lupinus luteus L. · Yellow lupin
WESTERN AUSTRALIAN DEPARTMENT OF
Hordeum vulgare L. · Barley
RODINA NINA ANDREEVNA / KUTS SVETLANA AFANAS'EVNA / KOKINA LARISA PAVLOVNA / KORYaKOVA ALEVTINA VASIL'EVNA / ShchENNIKOVA IRINA NIKOLAEVNA / DOMRAChEVA ZINAIDA NIKOLAEVNA / SYuTKINA VERA ALEKSANDROVNA
Solanum lycopersicum L. · Tomato
Silvertand, B. C. H. J.
Solanum lycopersicum L. · Tomato
Nunhems B.V.
Allium fistulosum L. · Welsh onion
Bejo Zaden, NL
Solanum lycopersicum L. · Tomato
Nunhems B.V.
Trifolium resupinatum L. · Persian clover
SEEDCO
Capsicum annuum L. · Bell pepper
Enza Zaden Beheer B.V.
Malus domestica (Suckow) Borkh. · Apple
Lactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Trachelium caeruleum L. · Blue throatwort
PanAmerican Seed Company
Pisum sativum L. · Pea
KWS MOMONT RECHERCHE SARL, FR
Solanum lycopersicum L. · Tomato
Nunhems Netherlands BV
Trifolium pratense L. · Red clover
AgResearch (NZ)
Medicago sativa L. · Alfalfa
NSW DEPARTMENT OF AGRICULTURE