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
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Lactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Solanum lycopersicum L. · Tomato
Nunhems B.V.
Asparagus officinalis L. · Asparagus
Theuws Johannes Henricus Adrianus / Arends Lambert Willem Johannes
Solanum lycopersicum L. · Tomato
Rijk Zwaan Zaadteelt en Zaadhandel B.V.
Vicia sativa L. · Common vetch
Jouffray-Drillaud SA (FR)
Solanum lycopersicum L. · Tomato
Nunhems Netherlands BV
Triticum aestivum L. · Bread wheat
Washington State University
Trifolium subterraneum L. · Subterranean clover
NEW SOUTH WALES, DEP.AGR.
Pisum sativum L. · Pea
CRITES SEEDS
Bouvardia Salisb. · Bouvardia
JOHN M.F.DE JOHN
Phaseolus vulgaris L. · Common bean
Syngenta Seeds
Trifolium incarnatum L. · Crimson clover
SELGEN A.S
Medicago sativa L. · Alfalfa
M. Mirchev, D. Dekov, D. Petkova, V. Toromanova
Lactuca sativa L. · Lettuce
Rijk Zwaan Zaadteelt en Zaadhandel B.V, Rijk Zwaan Lettuce Breeding department
Calathea G.F.W. Mey. · Calathea
Plant Planet B.V.
Lolium perenne L. · Perennial ryegrass
BARENBRUG HOLLAND
Vicia sativa L. · Common vetch
Jouffray-Drillaud SA (FR)
Solanum lycopersicum L. · Tomato
Yuksel Tohum
Vaccinium corymbosum L. · Highbush blueberry
Wagner L. Adam, Brazelton M. David
Solanum lycopersicum L. · Tomato
Syngenta Seeds, NL
Euphorbia pulcherrima Willd. ex Klotzsch · Poinsettia
von Tubeuf Guido
Glycine max (L.) Merr. · Soybean
University of Guelph Department of Plant Agriculture
Solanum lycopersicum L. · Tomato
Nunhems B.V., Nunhems B.V.