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.

SS 40302

Active

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

2 records

Surveyor

Terminated

Brassica oleracea L. (Broccoli Group) · Broccoli

2 records

Ruta øtofte

Terminated

Brassica napus L. var. napobrassica (L.) Rchb. · Rutabaga

2 records

Rapol

Terminated

Brassica napus L. · Rapeseed

2 records

Kilazol

Active

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

2 records

Grampian

Active

Brassica oleracea L. (Kale Group) · Kale

2 records

Kibouhou

Active

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

3 records

Furchenkohl

Active

Brassica oleracea L. (Kale Group) · Kale

2 records

Crown

Active

Brassica napus var. napus · Rapeseed

3 records

Autumn Fun

Terminated

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

2 records

Cleobis

Terminated

Brassica oleracea L. (Cauliflower Group) · Cauliflower

2 records

Bortfelder

Active

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

2 records

Bombardier

Active

Brassica oleracea L. (Kale Group) · Kale

2 records

Alletta

Terminated

Brassica oleracea L. (Broccoli Group) · Broccoli

2 records

Akala

Terminated

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

2 records

Anglian Gold

Active

Brassica oleracea L. (Kale Group) · Kale

2 records

Caledonian

Active

Brassica oleracea L. (Kale Group) · Kale

2 records

Fresco

Terminated

Brassica napus var. napus · Rapeseed

2 records

Yamori

Active

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

Shcevchenko Igor

2 records

StoX Yellow

Active

Matthiola incana (L.) R. Br. · Hoary stock

Evanthia B.V.

1 record

Milla Salmon

Active

Matthiola incana (L.) R. Br. · Hoary stock

Evanthia B.V.

1 record

Yuki

Protection expired

Brassica rapa L. subsp. chinensis (L.) Hanelt · Bok choy

Sakata Seed Corporation

1 record

Wilhelmsburger

Terminated

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

WAGNER| Julius Wagner GmbH

1 record

Verdia 2

Active

Brassica oleracea L. (Broccoli Group) · Broccoli

Vilmorin-Mikado SAS (FR)

1 record

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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.