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Diseases

Ramularia leaf spot of barley

Hordeum vulgare L.

A fungal disease of barley caused by Ramularia collo-cygni, which develops as an endophyte for a long period and manifests as necrotic spots delimited by leaf veins.

In the reference 83 varieties crop Barley, where this is mentioned in the description.

The pathogen is the imperfect fungus Ramularia collo-cygni, which resides in plant tissues in an endophytic form for a long time, showing no signs until the flowering phase or the onset of stress. Typical symptoms include the appearance of small reddish-brown or brown-black rectangular spots, surrounded by a chlorotic halo, which are delimited by leaf veins.

As the disease progresses, the spots coalesce, causing premature yellowing and death of the leaves, while sporulation in the form of black dots can also affect awns and glumes. Visual diagnosis is difficult due to the similarity with physiological leaf spots, therefore PCR testing is used for accurate identification of the pathogen.

Currently, there is no generally accepted classification of races or pathotypes of Ramularia collo-cygni, although studies confirm the high variability of the pathogen. Specific resistance genes in barley breeding are not widely described, and resistant varieties are practically absent, making the search for resistance donors a priority task.

General information about the subject — on the page Ramularia leaf spot.

Sources8

Varieties of Barley 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.

Belladonna

Active

Hordeum vulgare L. · Barley

SAATZUCHT JOSEF BREUN GMBH and CO.KG

DE EE FR LT PL
12 records

Maaren

Active

Hordeum vulgare L. · Barley

Svalöf Weibull (SE)

EE FI LT LV
10 records

Cerbinetta

Active

Hordeum vulgare L. · Barley

Claus Einfeldt

AT FI SK UA
11 records

Azalea

Active

Hordeum vulgare L. · Barley

Sekobra Recherches

DK FR SI UA
11 records

Finola

Active

Hordeum vulgare L. · Barley

Saatzucht Donau, A

AT HU UA
13 records

LG Caruso

Active

Hordeum vulgare L. · Barley

LIMAGRAIN EUROPE

DE EE FR LT PL
11 records

Wikingett

Active

Hordeum vulgare L. · Barley

Verneuil Recherche SA (FR)/Svalof Weibull AB (SE)

DK FR NL PL
13 records

Sevilla

Active

Hordeum vulgare L. · Barley

Saatzucht Donau GmbH, Probstdorf AT

AT DE HU PL
10 records

Shaloo

Application submitted

Hordeum vulgare L. · Barley

Syngenta UK Ltd

DK EE LT UA
10 records

Pelican

Active

Hordeum vulgare L. · Barley

SAATEN UNION RECHERCHE

BE DE FR PL
14 records

Cruiser

Terminated

Hordeum vulgare L. · Barley

SAATZUCHT J.BREUN GDBR

DE DK FI LT
9 records

Colonia

Active

Hordeum vulgare L. · Barley

Claus Einfeldt

CZ DE FR PL
8 records

Fairytale

Active

Hordeum vulgare L. · Barley

Sejet Planteforaedling I,S

DK FI FR
13 records

Bianca

Active

Hordeum vulgare L. · Barley

SAATZUCHT STRENG-ENGELEN GMBH&CO. KG

AT DE DK LU
8 records

SY Zoomba

Active

Hordeum vulgare L. · Barley

Syngenta Crop Protection AG, CH

DE DK FR HR
8 records

RGT Mela

Active

Hordeum vulgare L. · Barley

W. von Borries-Eckendorf GmbH & Co.KG

AT CZ DE PL
7 records

Lonni

Terminated

Hordeum vulgare L. · Barley

Pajbjergfonden (DK)

DE DK FR LT
7 records

SY Galileoo

Active

Hordeum vulgare L. · Barley

Syngenta Participations AG

DE PL UA
8 records

Pewter

Active

Hordeum vulgare L. · Barley

Syngenta UK Ltd

DE EE FR
11 records

Lyberac

Active

Hordeum vulgare L. · Barley

Claus Einfeldt

CZ DE HU
7 records

Mizzi

Active

Hordeum vulgare L. · Barley

SAATZUCHT JOSEF BREUN GmbH&Co.KG

AT DE PL
7 records

Mirabelle

Active

Hordeum vulgare L. · Barley

W. von Borries-Eckendorf GmbH & Co.KG

DE PL UA
8 records

Medusa

Active

Hordeum vulgare L. · Barley

Sejet Planteforaedling I,S

DE FR HR
7 records

Avantasia

Active

Hordeum vulgare L. · Barley

Deutsche Saatveredelung, D

CZ DE UA
8 records