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Diseases

Rapeseed Leaf Spots

Brassica napus var. napus

A group of rapeseed diseases manifested as necrotic spots of various etiologies, including Alternaria blight, phoma stem canker, cylindrosporiosis, and black rot.

In the reference 31 varieties crop Rapeseed, where this is mentioned in the description.

Alternaria blight of rapeseed, caused by the fungi Alternaria brassicae and A. brassicicola, is characterized by circular spots with concentric zonation and a black velvety coating. Phoma leaf spot, caused by Leptosphaeria maculans and L. biglobosa, manifests as dry gray spots with pycnidia and potential necrosis of the root collar. Resistance to phoma is controlled by Rlm genes, which interact with the pathogen according to the gene-for-gene model.

White leaf spot, or cylindrosporiosis, is caused by the fungus Cylindrosporium concentricum and appears as whitish or gray spots with a loose coating. Bacterial leaf spot, caused by Xanthomonas campestris pv. campestris, is distinguished by V-shaped necrotic spots with a chlorotic halo and a water-soaked appearance of the tissues. For Alternaria and bacterial pathogens, the presence of virulent races has been described, which necessitates consideration of regional specificity when selecting resistant varieties.

General information about the subject — on the page Leaf spot diseases.

Sources8

Varieties of Rapeseed 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.

PX 113

Active

Brassica napus var. napus · Rapeseed

Pioneer Overseas Corporation US (USA)

FR HR IE UA
13 records

PR 44 D 06

Active

Brassica napus var. napus · Rapeseed

Pioneer Overseas Corporation US (USA)

DK FI FR HR UA
10 records

PT 284

Active

Brassica napus var. napus · Rapeseed

PIONEER OVERSEAS CORPORATION

DE PL UA
7 records

INV 1310

Active

Brassica napus var. napus · Rapeseed

Dirk Decherf

FR PL UA
8 records

Architect

Active

Brassica napus var. napus · Rapeseed

Reinhard Hemker

CZ DE DK FR PL UA
19 records

Temptation

Active

Brassica napus var. napus · Rapeseed

STELLING DIETER

CZ DE FR PL
13 records

DK Exception

Active

Brassica napus var. napus · Rapeseed

Nelly Guguin

CZ DK FR UA
14 records

KWS Granos

Active

Brassica napus var. napus · Rapeseed

KWS, D

CZ FR PL UA
14 records

Aurelia

Active

Brassica napus var. napus · Rapeseed

Limagrain Europe, F

CZ DK IE PL
14 records

Alicante

Active

Brassica napus var. napus · Rapeseed

Reinhard Hemker

CZ FR PL UA
11 records

LG Aphrodite

Active

Brassica napus var. napus · Rapeseed

Reinhard Hemker

CZ DK FR PL UA
10 records

LG Atacama

Active

Brassica napus var. napus · Rapeseed

Reinhard Hemker

DK FR PL UA
9 records

RGT Paradizze

Active

Brassica napus var. napus · Rapeseed

RAGT 2n, FR

DE FR PL UA
7 records

Catana

Active

Brassica napus var. napus · Rapeseed

MONSANTO TECHNOLOGY| Monsanto Technology LLC

DE DK FR PL
9 records

Smaragd

Active

Brassica napus var. napus · Rapeseed

DEUTSCHE SAATVEREDELUNG AG

CZ DE DK PL
7 records

Dualis

Active

Brassica napus var. napus · Rapeseed

Norddeutsche Pflanzenzucht DE

CZ DK FR PL
7 records

Addition

Active

Brassica napus var. napus · Rapeseed

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

DE DK FR UA
12 records

ES Curiel

Active

Brassica napus var. napus · Rapeseed

Thomas Foubert

FR UA
8 records

Bachus

Active

Brassica napus var. napus · Rapeseed

Werner Horn

CZ PL UA
10 records

Heden

Active

Brassica napus var. napus · Rapeseed

KWS MOMONT RECHERCHE SARL, FR

FR HR UA
7 records

Medea

Active

Brassica napus var. napus · Rapeseed

Syngenta Crop Protection AG

DE DK PL
7 records

Helypse

Active

Brassica napus var. napus · Rapeseed

KWS MOMONT RECHERCHE SARL, FR

DK FR HR
6 records

ES Cesario

Active

Brassica napus var. napus · Rapeseed

LIDEA FRANCE SAS

CZ PL
5 records

Sparrow

Active

Brassica napus var. napus · Rapeseed

Deutsche Saatveredelung AG - DSV (DE)

DE DK FR
6 records