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.
hybrids between Solanum lycopersicum L. and S. habrochaites S. Knapp & D.M. Spooner
Axia Vegetable Seeds B.V.
Vaccinium corymbosum L. · Highbush blueberry
Gospodarstwo Ogrodnicze Jerzy Wilczewski
Vaccinium corymbosum L. · Highbush blueberry
Szkola Glowna Gospodarstwa Wiejskiego
Cucumis sativus L. · Cucumber
Shevkunov Valerii Mykolaiovych, Prutens`ka Nataliia Oleksiivna, Shamshyna Anna Viacheslavovna, Portiankin Alieksiei IEvhenovych, Havrysh Serhii Fedorovych,
Malus Mill. · Apple
Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka
Solanum lycopersicum L. · Tomato
Sylvasn Bontems
Beta vulgaris Sugar Beet Group · Sugar beet
Borysov Dmytro Vasylovych, Leibovych Anatolii Solomonovych, Rybak Volodymyr Oleksiiovych, Kulik Oleksandr Heorhiiovych, Roik Mykola Volodymyrovych,
Malus Mill. · Apple
Instytut Sadownictwa i Kwiaciarstwa im. Szczepana Pieniążka
Hordeum vulgare L. · Barley
LISSY KUNTZE
Glycine max (L.) Merr. · Soybean
Istvan Rajcan
Allium cepa L. var. cepa · Onion
Nunhems B.V.
Triticum aestivum L. · Bread wheat
Boryslav Kobyl`sky, Srbyslav Denchych,
Cucumis sativus L. · Cucumber
Khareba Oleksandr Volodymyrovych
Pisum sativum L. · Pea
Tezier SA (FR)
Phaseolus vulgaris L. · Common bean
Vilmorin SA (FR)
Allium cepa L. · Onion
SUNSEEDS
Allium cepa L. · Onion
MARALDI SEMENTI S.r.l.
Lactuca sativa L. var. crispa L. · Leaf lettuce
Henk Driessen
Malus Mill. · Apple
Instytut Ogrodnictwa - Państwowy Instytut Badawczy
Triticum aestivum L. · Bread wheat
Los Ruslan Mykolaiovych, Prokopik Nataliia Ivanivna, Pravdziva Iryna Volodymyrivna, Dubovyk Nataliia Serhiivna, Volohdina Halyna Borysivna, Zamlila Nina Petrivna, Kyrylenko Vira Viktorivna, Derhachov Oleksandr Leonidovych, Humeniuk Oleksandr Volodymyrovyc
Fragaria x ananassa Duchesne ex Rozier · Garden strawberry
SCOTTISH CROP RESEARCH INSTITUTE
Cucumis sativus L. · Cucumber
Shevchenko Andrii Oleksiiovych
Triticum aestivum L. · Bread wheat
Zaima Oleksii Anatoliiovych, Siroshtan Andrii Anatoliiovych, Kolomiiets` Lidiia Andriivna, Kyrylenko Vira Viktorivna, Zamlila Nina Petrivna, Volohdina Halyna Borysivna, Humeniuk Oleksandr Volodymyrovych, Kochmars`kyi Valentyn Serhiiovych,
Solanum lycopersicum L. · Tomato
Hari Besels