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.
Triticum aestivum L. · Bread wheat
Butchenko Ivan Illich, Shudria Petro Petrovych, Matviiets Volodymyr Hryhorovych,
Glycine max (L.) Merr. · Soybean
AGENZIA REGIONALE PER LO SVILUPPO RURALE (ERSA)
Solanum lycopersicum L. · Tomato
Nunhems B.V.
Prunus persica (L.) Batsch · Peach
INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR
Allium cepa L. · Onion
UNITED GENETICS SEEDS CO
Solanum lycopersicum L. · Tomato
Syngenta Seeds B.V.
Malus Mill. · Apple
Information not available - Contact NL authorities
Allium cepa L. · Onion
Scott Hendricks
Allium cepa L. var. cepa · Onion
TAKII & CO LTD
Cicer arietinum L. · Chickpea
SEMILLAS BATLLE, S.A.
Medicago sativa L. nothosubsp. varia (Martyn) Arcang. · Bastard Medic
Mike Velde
Zea mays L. · Maize
Fermerske hospodarstvo "Novoiehorivka-Ahro"
Triticum aestivum L. · Bread wheat
STARYCHENKO VASYL MYKOLAIOVYCH, KOVALCHUK SERHII OLEKSANDROVYCH, KYRYLCHUK ANZHELA MYKOLAIVNA, HOLYK LIUBOV MYKOLAIVNA
Malus Mill. · Apple
Information not available - Contact NL authorities
Lactuca sativa L. var. crispa L. · Leaf lettuce
Peter Kraan
Cichorium intybus L. · Chicory
SAREA GMBH
Solanum lycopersicum L. · Tomato
Sylvain Bontems
Allium cepa L. · Onion
Dr. Mario Martinelli
Solanum lycopersicum L. · Tomato
Bayer Holland B.V.
Solanum lycopersicum L. · Tomato
Axia NL B.V.
Zea mays L. · Maize
Kalinichenko Artem Oleksandrovych, Didenko Kostiantyn Oleksandrovych,
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
Livestock and Seed Division (US)
Daucus carota L. · Carrot
Daniel Gabillard
Allium cepa L. · Onion
Daniele Maraldi