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.
Arachis hypogaea L. · Peanut
North Carolina Agricultural Research Service
Glycine max (L.) Merr. · Soybean
Research Planning and Coordination Agriculture and Agri-Food (CA)
Beta vulgaris Sugar Beet Group · Sugar beet
KWS SAAT SE & CO.KGAA
Nicotiana tabacum L. · Tobacco
Spas S. Gelemerov, Kostadin B. Lulov, Katerina G. Zefirova
Medicago sativa L. · Alfalfa
Velde Mike John
Triticum aestivum L. · Bread wheat
BLYZNIUK BOHDANA, DUBOVYK NATALIIA, HUDZENKO VOLODYMYR, ZAMLILA NINA, KYRYLENKO VIRA, HUMENIUK OLEKSANDR, KOCHMARSKYI VALENTYN, DERHACHOV OLEKSANDR, DEMYDOV OLEKSANDR, PIRYCH ALINA
Lactuca sativa L. · Lettuce
Seminis Vegetable Seeds
Castanea sativa Mill. · Sweet chestnut
PEDRO URQUIJO LANDALUCE
Triticum aestivum L. · Bread wheat
Dubova Oksana Anatoliivna, Chaika Anatolii Mykolaiovych, Burdeniuk-Tarasevych Larysa Antonivna,
Trifolium repens L. · White clover
CAL-WEST SEEDS
Prunus tomentosa thunb x P. cerasifera
Krymsk Experiment Breeding Station
Gardenia jasminoides J. Ellis · Cape jasmine
James Berry
Echinacea purpurea (L.) Moench · Purple coneflower
Sunny Border Nurseries
Malus domestica x Malus robusta · Apple
Gennaro Fazio^^^Herbert Aldwinckle^^^Terence L. Robinson^^^James Cummins
Convolvulus sabatius Viv. · Ground morning glory
Schrader Ralf|D-59348 Ludinghausen, DE
Persea americana Mill. · Avocado
SOUTH COAST RESEARCH AND EXTENSION CENTER
Begonia masoniana Irmsch. · Iron cross begonia
Obed Jacob Smit
Tiarella L. · Foamflower
TERRA NOVA NURSERIES INC
Vaccinium L. · Bilberry
Paul M. Lyrene James W. Olmstead
Malus domestica x Malus robusta · Apple
Gennaro Fazio^^^James Cummins^^^Herbert Aldwinckle^^^Terence L. Robinson
Delphinium x belladonna hort. ex Bergmans · Belladonna delphinium
NOORDHUIS BART / BISSCHOP ELISABETH
Tradescantia spathacea Sw. · Boat-lily
ASHISH HANSOTI
Apium graveolens L. var. dulce (Mill.) Pers. · Celery
Tony M. Avila
Salvia L. · Sage
Albert Lauwers^^^Carine Vervaecke