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.

Elvira

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Wassenaar

DE ES FR HU NL PL +2

14 records

Nordkap

Active

Triticum aestivum L. · Bread wheat

Nordsaat Saatzucht GmbH, D-38895 Langenstein, OT Bohnshausen

EE LT LU PL UA

12 records

Bravo

Active

Beta vulgaris Sugar Beet Group · Sugar beet

STRUBE HERMANN| Dr. Hermann Strube

DE FR LT PL UA

10 records

G.935

Active

Malus Mill. · Apple

NL UA

12 records

Dowon

Active

Zamioculcas zamiifolia (Lodd.) Engl. · ZZ plant

Lee Hyuk Jin

9 records

Madonna

Active

Pisum sativum L. · Pea

Serasem, FR

CZ DE EE LT LV UA

16 records

Gotik

Active

Pisum sativum L. · Pea

Selgen

AT CZ HR PL SK

15 records

Xanthus

Active

Beta vulgaris Sugar Beet Group · Sugar beet

Maribo Seed International ApS

ES FR GR LT UA

8 records

Sandpiper Smart

Active

Beta vulgaris Sugar Beet Group · Sugar beet

SESVANDERHAVE, N.V./S.A.

DK ES IT LT NL SE +1

8 records

Polka

Active

Fragaria x ananassa Duchesne ex Rozier · Garden strawberry

Szkółka Markiewicz Agnieszka Markiewicz-Januszewska

DE FR HU NL PL UA

15 records

Marinka

Active

Brassica napus var. napus · Rapeseed

MORTEN HELT POULSEN

DE DK ES IE PL

11 records

Lavina

Protection expired

Beta vulgaris Sugar Beet Group · Sugar beet

KWS SAAT SE & CO.KGAA

DE GR HR HU IT UA

8 records

Korada

Active

Glycine max (L.) Merr. · Soybean

Semences Prograin Inc

AT CZ HR HU SK UA

11 records

Colonia

Active

Triticum aestivum L. · Bread wheat

NICKERSON INTERNATIONAL RESEARCH SNC

BE HU LT LU PL

12 records

Herold

Protection expired

Pisum sativum L. · Pea

Selgen a.s., CZ

AT CZ DE DK HR SK

10 records

Goldrush

Active

Phaseolus vulgaris L. · Common bean

Seminis Vegetable Seeds

ES HR HU IT SI

8 records

Crescendo

Active

Hordeum vulgare L. · Barley

VEQUAUD DOMINIQUE

CZ FR NL UA

17 records

Panda

Active

Beta vulgaris Sugar Beet Group · Sugar beet

Sesvanderhave, B

FR LT UA

10 records

Kingfisher

Active

Pisum sativum L. · Pea

Milika Buurman

CZ UA

14 records

Grundy

Active

Pisum sativum L. · Pea

Syngenta Seeds, NL

NL UA

11 records

enrosadira

Active

Rubus idaeus L. · Red raspberry

Vivai Molari e Gatti, I

NL UA

16 records

Campero

Active

Allium cepa L. · Onion

Paul Degreef

11 records

Pacific Deluxe

Active

Rubus idaeus L. · Red raspberry

Thomas Amrhein, Mario Aguas, José Lopez

11 records

Uzi

Active

Persea americana Mill. · Avocado

The Regents of the University of California

9 records

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Diseases

Powdery mildew 33 570
Fusarium wilt and blight 29 887
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Downy mildew 16 384
Leaf spot diseases 15 926
Rust 14 859
Verticillium wilt 12 175
Scab 12 064

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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.