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.
Allium fistulosum L. · Welsh onion
SEMINIS VEGETABLE SEEDS, NL
Gossypium hirsutum L. · Upland cotton
Sure Grow Seed Inc.
Medicago sativa L. · Alfalfa
THE UNIVERSITY OF QUEENSLAND ST. LUCIA CAMPUS
Glycine max (L.) Merr. · Soybean
Syngenta Seeds
Medicago sativa L. · Alfalfa
Danielson Briggs Gardner
Prunus amygdalus x Prunus persica
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE-INRA
Trifolium pratense L. · Red clover
Sam Badoux Agroscope
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Whitaker Vance
Prunus besseyi x Prunus cerasifera Ehrh
Pinochet Jorge
Heuchera L. · Coral Flower
Janet N. Egger
Coreopsis L. · Tickseed
TERRA NOVA NURSERIES INC
Vaccinium corymbosum L. · Highbush blueberry
Rústicas del Guadalquivir S.L.^^^Florida Foundation Seed Producers Inc. (FFSP Marianna Office)
Oryza sativa L. · Rice
NECMI BESER, HALIL SUREK
Hordeum vulgare L. · Barley
Ragt, F
Hordeum vulgare L. · Barley
Saaten-Union
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
UNIV.DE CALIFORNIA
Triticum aestivum L. · Bread wheat
Saaten-Union
Hordeum vulgare L. · Barley
Saaten-Union
Hordeum vulgare L. · Barley
Nordsaat Saatzuchtgesellschaft mbH
Hordeum vulgare L. · Barley
Limagrain Nederland B.V.
Rosa L. · Rose
Pekmez, Paul|La Petite Pierre, 67290 Wingen-sur-Moder, France
Rubus idaeus L. · Red raspberry
The New Zealand Institute for Plant and Food Research
Hordeum vulgare L. · Barley
KWS LOCHOW GMBH, DE
Hordeum vulgare L. · Barley
Saaten-Union