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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.

Visby

Active

Brassica napus var. napus · Rapeseed

Norddeutsche Pflanzenzucht Hans-Georg Lembke KG

DE HR PL UA
15 records

SY Annabella

Active

Brassica napus var. napus · Rapeseed

Syngenta Crop Protection AG

DE DK PL UA
10 records

Clarus

Active

Brassica napus var. napus · Rapeseed

DSV, D

CZ DE PL
9 records

PT200CL

Active

Brassica napus var. napus · Rapeseed

Pruvot Kraling

CZ FR HR UA
9 records

LG Adeline

Active

Brassica napus var. napus · Rapeseed

Syngenta Crop Protection AG

CZ DK FR PL UA
10 records

LG Arnold

Active

Brassica napus var. napus · Rapeseed

Limagrain Europe, F

CZ DE PL
11 records

Parcours

Active

Brassica napus var. napus · Rapeseed

Norddeutsche Pflanzenzucht Hans-Georg Lembke KG

DE DK PL
9 records

Epure

Active

Brassica napus var. napus · Rapeseed

SARL ADRIEN MOMONT ET FILS, FR

DE DK FR IE PL
10 records

Arabella

Active

Brassica napus var. napus · Rapeseed

Nickerson International Research SNC (FR)

CZ DE DK FR SE
13 records

Cristal

Active

Brassica napus var. napus · Rapeseed

Norddeutsche, D

CZ DK FR PL
9 records

LG Adamant

Active

Brassica napus var. napus · Rapeseed

LIMAGRAIN EUROPE

CZ DK FR PL UA
10 records

LID Invicto

Active

Brassica napus var. napus · Rapeseed

Sandrine LEGROS

CZ DE FR PL UA
11 records

ES Silene

Active

Brassica napus var. napus · Rapeseed

Patris Zheanson

CZ DE DK FR UA
9 records

Duplo

Active

Brassica napus var. napus · Rapeseed

W. von Borries-Eckendorf GmbH & Co.KG

CZ DE DK FR
10 records

Hybrirock

Active

Brassica napus var. napus · Rapeseed

SARL ADRIEN MOMONT ET FILS, FR

FR HR PL UA
13 records

SY Floretta

Active

Brassica napus var. napus · Rapeseed

Syngenta Participations,CH

CZ PL UA
8 records

Libravo

Active

Brassica napus var. napus · Rapeseed

DEUTSCHE SAATVEREDELUNG AG

CZ DE DK ES PL
9 records

Hostine

Active

Brassica napus var. napus · Rapeseed

Marie-Aude Vanhersecke

DK FR HR UA
12 records

DK Excited

Active

Brassica napus var. napus · Rapeseed

Monsanto Technology, USA

CZ DE DK PL
9 records

SY Alibaba

Active

Brassica napus var. napus · Rapeseed

Syngenta Participations AG

CZ DE DK FR PL
8 records

SY Glorietta

Active

Brassica napus var. napus · Rapeseed

Syngenta Participations,CH

CZ PL UA
9 records

Karat

Active

Brassica napus var. napus · Rapeseed

SVALOF AB

DE DK ES SE UA
10 records

Angelico

Active

Brassica napus var. napus · Rapeseed

LIMAGRAIN EUROPE

CZ DK FR PL UA
11 records

Vectra

Active

Brassica napus var. napus · Rapeseed

RAPS| RAPS GbR Saatzucht Lundsgaard

CZ DE HR PL
10 records

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