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.
Glycine max (L.) Merr. · Soybean
Minnesota Agricultural Experiment Station
Lolium perenne L. · Perennial ryegrass
JACKLIN SEED
Solanum lycopersicum L. · Tomato
Kees Konst
Solanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Begonia boliviensis A. DC. · Bolivian begonia
Yates Frederic C.|Congleton, GB
Solanum lycopersicum L. · Tomato
Syngenta Seeds B.V.
Rubus idaeus L. · Red raspberry
Brachyglottis Forst. & Forst. · Brachyglottis
David Ralph Tristram
Vinca L. · Periwinkle
Wojo's Greenhouse Farm
Guzmania Ruiz et Pav. · Guzmania
Caroline De Meyer
Hypericum androsaemum L. · Tutsan
Handelskwekerij Verheijen V.O.F
Rehmannia elata x Rehmannia glutinosa
Walberton Plants LTD
Kniphofia Moench · Red hot poker
Janet N. Egger
Brunnera macrophylla (Adams) I. M. Johnst. · Siberian bugloss
Janet N. Egger
Hybrids between Echinacea purpurea (L.) Moench and Echinacea paradoxa (Norton) Britton
HARINI KORLIPARA
Portulaca oleracea L. · Common purslane
Sakata Seed Corporation (SCC)
Persea americana Mill. · Avocado
Ya'Akov Avraham Ben / Silberstein Miriam / Irihimovitch Vered
Campsis x tagliabuana (Vis.) Rehder · Hybrid trumpet vine
Sakaue Koichi
Fittonia albivenis (Lindl. ex hort. Veitch) Brummitt · Nerve plant
Schoenmakers Tropische Potcultures V.O.F.
Podophyllum L.
Janet N. Egger
Oenothera L. · Evening Primrose
MINEO BALDASSARE
Dracaena Vand. ex L. · Dracaena
Erick Berlin
Portulaca oleracea L. · Common purslane
Sakata Seed Corporation (SCC)
Pisum sativum L. · Pea
PURE LINE SEEDS