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 Onion 119 Bread wheat 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 Alfalfa 53 Soybean 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.

CHIMGAN

Active

Solanum lycopersicum L. · Tomato

Yolanda Duran

2 records

Brunella

Withdrawn

Allium cepa L. var. cepa · Onion

Enza Zaden Beheer B.V.

1 record

Celzus F1

Terminated

Solanum lycopersicum L. · Tomato

Maren Shutte, Ad Barten,

1 record

Campilo F1

Application submitted

Allium cepa L. · Onion

Franko Medioli

2 records

BTS Smart 3905 RHC

Active

Beta vulgaris Sugar Beet Group · Sugar beet

Betaseed

1 record

Blysk

Terminated

Onobrychis transcaucasica Grossh.

Holub Mariia Andriivna, Tereschenko Mykola Mykhailovych, Lutonina Mariia Mykytivna,

1 record

Blooster F1

Terminated

Allium cepa L. · Onion

Hari Besels

1 record

Berehynia myronivs`ka

Active

Triticum aestivum L. · Bread wheat

Koliuchyi Vasyl` Trokhymovych, Kovalyshyna Hanna Mykolaivna, Siroshtan Andrii Anatoliiovych, Zamlila Nina Petrivna, Volohdina Halyna Borysivna, Humeniuk Oleksandr Volodymyrovych, Kochmarskyi Valentyn Serhiiovych,

2 records

BIG POWER

Terminated

Solanum lycopersicum L. · Tomato

RIJK ZWAAN Z.Z. B.V.

1 record

Blue Star

Terminated

Juniperus squamata Buch.-Ham. ex D. Don · Flaky juniper

Vorobiova Olena Anatoliivna

1 record

Balstar F1

Active

Allium cepa L. · Onion

Scott Hendricks

2 records

Baja Verde PS

Active

Allium fistulosum L. · Welsh onion

Hari Besels

1 record

Bilyi anhel

Active

Pisum sativum L. · Pea

Sichkar V'iacheslav Ivanovych, Rabichuk Anatolii Vasylovych, Bushulian Oleh Volodymyrovych, Koblai Svitlana Volodymyrivna,

2 records

AX4538

Application submitted

Solanum lycopersicum L. · Tomato

Axia NL B.V.

2 records

Bigdena F1

Terminated

Solanum lycopersicum L. · Tomato

Sylvain Bontems

1 record

Baccara/Bakara

Terminated

Beta vulgaris Sugar Beet Group · Sugar beet

Khart Rodzher Evelin

1 record

Baster

Active

Helianthus annuus L. · Sunflower

Malinovskyi Serhii Volodymyrovych

2 records

Aswan F1

Active

Solanum lycopersicum L. · Tomato

Dr. V.S.S. Rao

2 records

Bars

Application submitted

Allium cepa L. · Onion

Karamert Metin

2 records

Barlena

Terminated

Hordeum vulgare L. · Barley

WUSTRACK| Dr. Hans-Joachim Wustrack

2 records

Axirady XR

Application submitted

Solanum lycopersicum L. · Tomato

Axia NL B.V.

2 records

ANTHONY RZ (85-74 RZ)

Terminated

Lactuca sativa L. · Lettuce

RIJK ZWAAN Z.Z. B.V.

1 record

Arnold F1

Terminated

Solanum lycopersicum L. · Tomato

Yonat Partok

1 record

Antelope F1

Terminated

Allium cepa L. · Onion

Scott Hendricks

2 records

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Diseases

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Text source

This summary is compiled from the publications listed in the sources and verified by an editor. It contains no legally significant information; it provides agronomic context for registry data rather than the registry data itself.