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Diseases

Phoma stem canker of oilseed rape

Brassica napus var. napus

A fungal disease of oilseed rape caused by Leptosphaeria maculans and L. biglobosa, affecting all plant organs and capable of causing crop failure due to the destruction of the root collar.

In the reference 529 varieties crop Rapeseed, where this is mentioned in the description.

The pathogens of the disease are two fungal species: the more aggressive Leptosphaeria maculans and the less aggressive Leptosphaeria biglobosa, whose anamorph stage is known as Phoma lingam. The pathogen exhibits high genetic variability, manifesting in the presence of various pathotypes that differ in virulence.

The disease affects oilseed rape at all growth stages. Light spots with pycnidia appear on seedlings, and gray-brown spots with a dark margin appear on leaves. The most dangerous symptom is the formation of necrotic cankers at the stem base, which lead to tissue cracking, impaired nutrient uptake, and plant lodging.

Resistance of oilseed rape to Phoma stem canker includes qualitative resistance based on specific Rlm genes (e.g., Rlm4, Rlm7) that interact with the pathogen's avirulence genes. Quantitative polygenic resistance is also employed, aimed at slowing down the spread of infection in stem tissues and petioles.

General information about the subject — on the page Phoma rot.

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.

Es-Astrid

Active

Brassica napus var. napus · Rapeseed

RUSTICA (FR)

CZ DE DK FR IE PL
17 records

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

PR 46 W 14

Active

Brassica napus var. napus · Rapeseed

PIONEER SALES| Pioneer Hi-Bred Northern Europe Sales Division GmbH

DE DK FR HR
15 records

PT 234

Active

Brassica napus var. napus · Rapeseed

Pioneer Overseas Corporation US (USA)

DE DK HR UA
13 records

PT 315

Active

Brassica napus var. napus · Rapeseed

PIONEER OVERSEAS CORPORATION US

CZ DE DK FR PL UA
15 records

PT 303

Active

Brassica napus var. napus · Rapeseed

PIONEER OVERSEAS CORPORATION US

CZ DE DK FR PL
11 records

PR 44 W 22

Active

Brassica napus var. napus · Rapeseed

Pioneer Overseas Corporation US (USA)

DK FR HR UA
9 records

PX 128

Active

Brassica napus var. napus · Rapeseed

PIONEER OVERSEAS CORPORATION

CZ DE DK UA
12 records

PT 314

Active

Brassica napus var. napus · Rapeseed

PIONEER OVERSEAS CORPORATION US

DE DK FR PL UA
11 records

NK Bravour

Active

Brassica napus var. napus · Rapeseed

SYNGENTA SEEDS AG, CH

DE DK FR IE UA
12 records

PR 46 W 21

Active

Brassica napus var. napus · Rapeseed

PIONEER SALES| Pioneer Hi-Bred Northern Europe Sales Division GmbH

DE DK HR UA
9 records

PT 271

Active

Brassica napus var. napus · Rapeseed

Pioneer Overseas Corporation US (USA)

DE HR UA
12 records

PT 275

Active

Brassica napus var. napus · Rapeseed

PIONEER OVERSEAS CORPORATION

DE UA
11 records

INV 1165

Active

Brassica napus var. napus · Rapeseed

KAISER JUTTA

PL UA
9 records

INV 1120

Active

Brassica napus var. napus · Rapeseed

Dirk Decherf

PL UA
8 records

PT 322

Active

Brassica napus var. napus · Rapeseed

PIONEER OVERSEAS CORPORATION US

DE DK FR UA
13 records

PT 279 CL

Active

Brassica napus var. napus · Rapeseed

PRUVOT JEAN-CLAUDE

DE HR
11 records

PT 248

Terminated

Brassica napus var. napus · Rapeseed

PIONEER OVERSEAS CORPORATION

DE DK PL UA
8 records

INV 1166 CL

Active

Brassica napus var. napus · Rapeseed

Yutta Kaizer, Jutta Kaiser,

UA
8 records

ES Neptune

Active

Brassica napus var. napus · Rapeseed

Euralis Semences FR

CZ FR HR
10 records

NXH 9610 CL

Active

Brassica napus var. napus · Rapeseed

DOW AgroSciences

DE DK PL
7 records

PT 211

Active

Brassica napus var. napus · Rapeseed

Pioneer Overseas Corporation US (USA)

DE DK HR
8 records

PT 299

Active

Brassica napus var. napus · Rapeseed

PIONEER OVERSEAS CORPORATION

DE DK UA
9 records

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