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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.

Tempo

Active

Brassica napus var. napus · Rapeseed

Serasem, FR

DE DK FR PL
11 records

ES Mercure

Application submitted

Brassica napus var. napus · Rapeseed

Euralis Semences FR

CZ FR HR PL
11 records

Bonanza

Active

Brassica napus var. napus · Rapeseed

Serasem, FR

CZ FR PL UA
10 records

Avatar

Active

Brassica napus var. napus · Rapeseed

Norddeutsche, D

CZ DE DK PL
11 records

Oriolus

Active

Brassica napus var. napus · Rapeseed

Deutsche Saatveredelung, D

CZ PL UA
8 records

NK Caravel

Active

Brassica napus var. napus · Rapeseed

Syngenta Crop Protection AG, Seeds Division, CH

CZ DK HR
9 records

ES Odice

Active

Brassica napus var. napus · Rapeseed

Patrice Jeanson

CZ HR UA
10 records

Albatros

Active

Brassica napus var. napus · Rapeseed

Thierry Ronsin

FR HR UA
10 records

ES Darko

Active

Brassica napus var. napus · Rapeseed

Patrice Jeanson

CZ HR UA
12 records

Manhattan

Active

Brassica napus var. napus · Rapeseed

Monsanto Technology LLC (US)/Deutsche Saatveredelung AG - DSV (DE)

CZ DK FR PL
9 records

Mirakel

Active

Brassica napus var. napus · Rapeseed

Norddeutsche Pflanzenzucht Hans-Georg Lembke KG

CZ DK PL SE
12 records

LG Atacama

Active

Brassica napus var. napus · Rapeseed

Reinhard Hemker

DK FR PL UA
9 records

LG Akerman

Active

Brassica napus var. napus · Rapeseed

LIMAGRAIN EUROPE

CZ DE FR PL UA
7 records

RGT Paradizze

Active

Brassica napus var. napus · Rapeseed

RAGT 2n, FR

DE FR PL UA
7 records

Caracas

Protection expired

Brassica napus var. napus · Rapeseed

MONSANTO| Monsanto SAS EDEN PARK - Batiment B

CZ DE DK FR
10 records

Edimax CL

Active

Brassica napus var. napus · Rapeseed

DSV Deutsche Saatveredelung AG (DE)

DK HR
10 records

Exagone

Application submitted

Brassica napus var. napus · Rapeseed

Monsanto Technology LLC (SAD)

CZ FR HR
10 records

SY Matteo

Active

Brassica napus var. napus · Rapeseed

Syngenta Participations AG| CH

CZ FR UA
7 records

Liclassic

Terminated

Brassica napus var. napus · Rapeseed

DEUTSCHE SAATVEREDELUNG AG

DE DK PL
8 records

LG Scorpion

Active

Brassica napus var. napus · Rapeseed

Reinhard Hemker

DE DK PL UA
8 records

Extrem

Protection expired

Brassica napus var. napus · Rapeseed

MONSANTO SAS IMMEUBLE EL YSEES LA DEFENSE

DE DK FR PL
8 records

DK Exquisite

Active

Brassica napus var. napus · Rapeseed

MONSANTO TECHNOLOGY

CZ FR PL UA
10 records

LG Arrakis

Active

Brassica napus var. napus · Rapeseed

LIMAGRAIN EUROPE

DE DK FR PL UA
9 records

Catana

Active

Brassica napus var. napus · Rapeseed

MONSANTO TECHNOLOGY| Monsanto Technology LLC

DE DK FR PL
9 records

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