Diseases

Clubroot

Plasmodiophora brassicae

Clubroot is a dangerous fungal disease affecting the root system of cruciferous plants. It manifests in the formation of galls and tumors on the roots, leading to stunted growth, wilting, and significant crop losses.

Mentioned in descriptions 577 varieties reference book.

The disease affects the root system of plants in the Brassicaceae family, causing the formation of characteristic swellings and galls of various sizes. As a result of the impaired absorption function of the roots, the aerial part of the plant lags in growth, leaves turn yellow, and the plants lose turgor and wilt during hot weather, often leading to a lack of heads or the formation of small and loose specimens.

The active development of the pathogen depends on environmental conditions, among which high soil moisture, moderately warm temperatures in the range of 18–25°C, and a slightly acidic pH level are critically important. The pathogen can remain viable in the soil as spores for up to 20 years, utilizing both cultivated plants and weeds as infection reservoirs.

Resistance of varieties is provided by genetic mechanisms that restrict the development of the pathogen in the roots, which allows for harvesting on infested sites. The assessment of resistance in variety trials is carried out through the creation of an artificial infection background, molecular tagging of resistance genes, and analysis of the combining ability of hybrid forms, although protection efficiency may vary depending on the presence of rare physiological races of the pathogen in a specific region.

Sources10

Breakdown by crop

Clubroot of Oilseed Rape 57 Clubroot of crucifers — White cabbage 41 Clubroot of Chinese Cabbage 32 Clubroot of crucifers — cauliflower 25 Clubroot of rapeseed 17 Clubroot of turnip 16 Clubroot of crucifers — broccoli 11 Clubroot of kale 9 Clubroot of Savoy Cabbage 8 Clubroot of rutabaga 8 Clubroot of rapeseed 6 Clubroot of Crucifers — Oilseed Radish 6 Clubroot of crucifers — Brussels sprouts 4 Clubroot of crucifers — white mustard 4 Clubroot of crucifers — Chinese cabbage 3

Found in these crops

Rapeseed 72 White cabbage 46 Napa cabbage 40 Cauliflower 29 Rapeseed 20 Turnip 17 Broccoli 12 Kale 9 Rutabaga 9 Savoy cabbage 9 Field mustard 8 Oil radish 7

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.

Gorilla

Active

Brassica napus var. napus · Rapeseed

LAMMERS SEED OPTIONS

5 records

Genki

Active

Brassica rapa L. subsp. pekinensis (Lour.) Hanelt · Napa cabbage

Sakata Seed Corporation (SCC)

4 records

Fonda

Active

Brassica oleracea L. (Kohlrabi Group) · Kohlrabi

Syngenta Seeds B.V.

3 records

Easytop

Active

Brassica oleracea L. (Cauliflower Group) · Cauliflower

Syngenta Seeds B.V.

3 records

Dojran

Active

Brassica oleracea L. (Savoy Cabbage Group) · Savoy cabbage

Syngenta Crop Protection AG

3 records

Drunen

Active

Brassica oleracea L. (Cauliflower Group) · Cauliflower

Syngenta Seeds B.V.

3 records

DK Pledge

Active

Brassica napus var. napus · Rapeseed

Monsanto Technology LLC, US

3 records

Corripa

Active

Brassica oleracea L. (Savoy Cabbage Group) · Savoy cabbage

Syngenta Crop Protection AG

5 records

Crispus

Active

Brassica oleracea L. (Brussels Sprouts Group) · Brussels sprouts

Syngenta Seeds B.V.

3 records

Cordesa

Active

Brassica oleracea L. (Savoy Cabbage Group) · Savoy cabbage

Syngenta Seeds B.V.

6 records

Coradi

Active

Brassica oleracea L. (Savoy Cabbage Group) · Savoy cabbage

Syngenta Crop Protection AG

5 records

Claremont

Active

Brassica oleracea L. (Broccoli Group) · Broccoli

BEJO ZADEN

4 records

Cordoba

Active

Brassica oleracea L. (Savoy Cabbage Group) · Savoy cabbage

Syngenta UK Ltd

5 records

Canten

Active

Brassica oleracea L. (Cauliflower Group) · Cauliflower

Syngenta Seeds B.V.

3 records

Cartagena

Active

Brassica oleracea L. (Cauliflower Group) · Cauliflower

BEJO ZADEN

4 records

Crombach

Active

Brassica napus L. · Rapeseed

DEUTSCHE SAATVEREDELUNG AG

3 records

Lergo

Terminated

Brassica napus var. napus · Rapeseed

Lantmännen SW Seed

DK SE

3 records

Bender

Active

Brassica napus L. · Rapeseed

DEUTSCHE SAATVEREDELUNG AG

EE LT

2 records

Aneto

Active

Brassica napus L. · Rapeseed

Lidea France SAS, Lescar FR

HU LT

2 records

Kilamax

Active

Brassica oleracea L. (White Cabbage Group) · White cabbage

Syngenta Crop Protection AG

4 records

Wiktor

Active

Raphanus sativus L. var. oleiformis Pers. · Oil radish

Pietrzak sp. z o.o. sp. k.

2 records

Varaždinsko 2

Active

Brassica oleracea L. (White Cabbage Group) · White cabbage

Semenarna Ljubljana, SI

2 records

Tokyo Club

Active

Brassica rapa L. var. rapa (L.) Thell. · Turnip

Sakata Seed Corporation, JP

2 records

Tensai

Active

Brassica rapa L. subsp. pekinensis (Lour.) Hanelt · Napa cabbage

Shcevchenko Igor

3 records

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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.