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Diseases

Downy mildew — cauliflower

Brassica oleracea L. (Cauliflower Group)

A fungal disease caused by the obligate biotroph Hyaloperonospora brassicae, manifesting as chlorotic spots and a whitish mold on cauliflower leaves.

In the reference 18 varieties crop Cauliflower, where this is mentioned in the description.

The pathogen of the disease is the oomycete Hyaloperonospora brassicae. In the early stages of plant development, especially in seedlings, a characteristic grayish or whitish powdery sporulation coating forms on the underside of cotyledons and leaves. On the upper side of the leaf blades, diffuse chlorotic spots develop, which may acquire a reddish-yellow hue with age, become necrotic, and cause leaf yellowing and senescence.

In breeding work to ensure cauliflower resistance, the dominant gene Ppa207, mapped on chromosome 2, has been identified, and research is underway to map quantitative trait loci (QTL) on chromosomes 4 and 8. The effectiveness of breeding hybrids is confirmed by the use of molecular markers, which allows for reducing the risk of significant crop losses under high humidity and dense planting conditions.

General information about the subject — on the page Downy mildew.

Sources8

Varieties of Cauliflower mentioned in the description

Selection based on the description text, not on official evaluation: these data are absent from registers. For specific variety details, please refer to its profile.

Fremont

Active

Brassica oleracea L. (Cauliflower Group) · Cauliflower

SEMINIS VEGETABLE SEEDS, NL

BG CZ FR HR HU NL +3
13 records

Graffiti

Active

Brassica oleracea L. (Cauliflower Group) · Cauliflower

Zsolt Galli

CZ DK PL SK UA
10 records

Gohan

Active

Brassica oleracea L. (Cauliflower Group) · Cauliflower

Syngenta Seeds B.V.

NL UA
6 records

Gitano

Active

Brassica oleracea L. (Cauliflower Group) · Cauliflower

Remi Leviel

FR NL UA
6 records

Dexter

Active

Brassica oleracea L. (Cauliflower Group) · Cauliflower

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

NL
4 records

Delaverde

Active

Brassica oleracea L. (Cauliflower Group) · Cauliflower

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

NL
3 records

Lazio

Active

Brassica oleracea L. (Cauliflower Group) · Cauliflower

HM.CLAUSE

FR
3 records

Mildis

Active

Brassica oleracea L. (Cauliflower Group) · Cauliflower

Vilmorin SA (FR)

FR HR
3 records

Karneval

Active

Brassica oleracea L. (Cauliflower Group) · Cauliflower

Sakata Seed Corporation, JP

FR
3 records

Ubac

Active

Brassica oleracea L. (Cauliflower Group) · Cauliflower

Gautier Semences SAS (FR)

FR
2 records

Tessaury

Active

Brassica oleracea L. (Cauliflower Group) · Cauliflower

Enza Zaden Beheer B.V.

NL
3 records

Jakavan

Terminated

Brassica oleracea L. (Cauliflower Group) · Cauliflower

Institut National de la Recherche Agronomique (FR)/Cerafel (FR)

FR
2 records

Fanch

Terminated

Brassica oleracea L. (Cauliflower Group) · Cauliflower

Institut National de la Recherche Agronomique (FR)/Cerafel (FR)

FR
2 records

Perfection

Terminated

Brassica oleracea L. (Cauliflower Group) · Cauliflower

DK
2 records

Dexter F1

Terminated

Brassica oleracea L. (Cauliflower Group) · Cauliflower

Rijk Zwaan Zaadteelt en Zaadhandel B.V.

UA
1 record

Cercy F1

Active

Brassica oleracea L. (Cauliflower Group) · Cauliflower

Kees Reinink

UA
2 records

Stupicky Obrovsky

Terminated

Brassica oleracea L. (Cauliflower Group) · Cauliflower

SK
1 record

Snowball 123

Terminated

Brassica oleracea L. (Cauliflower Group) · Cauliflower

NL
1 record