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Diseases

Root rots

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.

Sources10

Breakdown by crop

Root rots — common wheat 125 Root rots of sugar beet 75 Pea Root Rots 73 Tomato root rot 72 Raspberry root rots 55 Root rots — garden strawberry 47 Root rots of lettuce 43 Alfalfa Root Rot 40 Cucumber root rot 40 Tobacco root rots 35 Barley root rots 35 Maize Root Rots 33 Root rots of soybean 29 Root rots — red clover 20 Root rots — Onion 17 Root rots of Calibrachoa 17 Apple root rot 16 Bean root rots 15 Root rots — Onion 13 Root rots — durum wheat 13 Apple Root Rots 11 Root rots of triticale 10 Root rots of subterranean clover 10 Maize root rot 8

Found in these crops

Tomato 573 Sugar beet 141 Onion 136 Bread wheat 119 Onion 119 Garden strawberry 91 Pea 75 Red raspberry 64 Lettuce 60 hybrids between Solanum lycopersicum L. and S. habrochaites S. Knapp & D.M. Spooner 58 Soybean 53 Alfalfa 53

Varieties that feature this in their description

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.

MERCATO

Terminated

Pisum sativum L. · Pea

Nunhems Zaden BV (NL)

FR
1 record

Makarena F1

Terminated

Solanum lycopersicum L. · Tomato

Sylvain Bontems

UA
1 record

M 9 T 337 ISK

Active

Malus Mill. · Apple

Instytut Ogrodnictwa - Państwowy Instytut Badawczy

PL
1 record

Lunima

Application submitted

Capsicum annuum L. · Bell pepper

Holovchenko Roman Oleksandrovych,Holovchenko Oleksandr IAkovych,

UA
2 records

Luclair

Protection expired

Trifolium repens L. · White clover

INSTITUT NATIONAL DE LA RECHERCHE AGRONOMIQUE, FR

FR
1 record

Mallory F1

Active

Allium cepa L. · Onion

Ger Bimsdeboer

UA
1 record

Malling Jewel TJW

Terminated

Rubus idaeus L. · Red raspberry

Szkółka Jagoda Teresa i Jan Wyrobek

PL
1 record

LNZ PROTEKT

Active

Triticum aestivum L. · Bread wheat

Datsenko IElyzaveta Kostiantynivna, Datsenko Anatolii Mykhailovych,

UA
2 records

Listell F1

Terminated

Solanum lycopersicum L. · Tomato

Bev Van Den Bosch

UA
2 records

Lymarivna

Terminated

Triticum aestivum L. · Bread wheat

Artemchuk Iryna Petrivna, Morhun Volodymyr Vasylovych,

UA
1 record

M9 T337.1

Active

Malus Mill. · Apple

Matsenko Maksym Oleksandrovych

UA
2 records

LHA270/03

Active

Helianthus annuus L. · Sunflower

LIMAGRAIN EUROPE S.A.

IT
1 record

Levanzo F1

Terminated

Solanum lycopersicum L. · Tomato

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

UA
1 record

LSP 1259

Withdrawn

Pisum sativum L. · Pea

LABOULET SEMENCES

IT
1 record

Logistica RZ

Terminated

Solanum lycopersicum L. · Tomato

Rijk Zwaan France SARL (FR)

HR
1 record

Lemonax XR

Application submitted

Solanum lycopersicum L. · Tomato

Axia NL B.V.

NL
2 records

Lehenda Myronivs`ka

Protection expired

Triticum aestivum L. · Bread wheat

Kovalyshyna Hanna Mykolaivna, Kavunets` Valerii Petrovych, Koliuchyi Vasyl` Trokhymovych, Humeniuk Oleksandr Volodymyrovych, Marynka Svitlana Mykolaivna, Khomenko Svitlana Olehivna, Basanets` Hanna Stepanivna, Kyrylenko Vira Viktorivna, Kochmarskyi Valent

UA
2 records

Ksantiia

Active

Triticum durum Desf. · Durum wheat

Holik Oleh Viktorovych, Bohuslavskyi Roman Lvovych, Didenko Svitlana Yuriivna, Babushkina Tetiana Viktorivna, Zviahintseva Anna Mykolaivna

UA
2 records

KSM 2652

Terminated

Zea mays L. · Maize

Pierre GARRAUD

UA
2 records

Komeett F1

Active

Solanum lycopersicum L. · Tomato

Arjan Van Donk

UA
1 record

L447HD

Active

Medicago sativa L. nothosubsp. varia (Martyn) Arcang. · Bastard Medic

Legacy Seeds, Inc., 16-18 th Ave. South Nampa, Idaho 83651, USA

EE
1 record

Ladoslava

Active

Medicago sativa L. nothosubsp. varia (Martyn) Arcang. · Bastard Medic

Lutonina Mariia Mykytivna, Holub Mariia Andriivna, Bushulian Oleh Volodymyrovych,

UA
2 records

Kvartet F1

Terminated

Cucumis sativus L. · Cucumber

Havrysh Serhii Fedorovych, Dubinin Serhii Volodymyrovych,

UA
2 records

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