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.

KWS Meridian

Active

Hordeum vulgare L. · Barley

Lochow-Petkus GmbH (DE)

AT CZ DE DK EE FR +6

25 records

SY Dakoota

Active

Hordeum vulgare L. · Barley

Syngenta Participations,CH

CZ DE FR UA

12 records

Ellinor

Active

Hordeum vulgare L. · Barley

SAATZUCHT JOSEF BREUN GMBH and CO.KG

AT CZ DK EE FI FR +4

27 records

Sonja

Active

Hordeum vulgare L. · Barley

W.ENGELEN

AT CZ DE DK ES FR +4

20 records

Odyssey

Active

Hordeum vulgare L. · Barley

Nickerson International Research SNC (FR)

CZ EE FR LT LU NL +2

21 records

Cellar

Terminated

Hordeum vulgare L. · Barley

Syngenta UK Ltd

DE EE FR HR LT LV +1

17 records

Signora

Protection expired

Hordeum vulgare L. · Barley

SERASEM| SERASEM (G.I.E. commercial)

AT CZ DE ES FR HU +2

12 records

Auriga

Active

Hordeum vulgare L. · Barley

NORDSAAT SAATZUCHT

DE EE ES FI HU LT +1

16 records

Shuffle

Active

Hordeum vulgare L. · Barley

Syngenta UK Ltd

AT CZ DE FR SK UA

14 records

Isabella

Application submitted

Hordeum vulgare L. · Barley

Sejet Planteforaedling I,S

DK ES FR LT PL UA

17 records

JB Flavour

Active

Hordeum vulgare L. · Barley

Saatzucht Josef Breun GdbR (DE)

CZ DE DK EE FR LT

14 records

KWS Donau

Active

Hordeum vulgare L. · Barley

KWS Lochow, D

AT CZ DE RO UA

17 records

SU Laubella

Active

Hordeum vulgare L. · Barley

Nordsaat Saatzuchtgesellschaft mbH

AT CZ DE FR HU PL

15 records

SU Jule

Active

Hordeum vulgare L. · Barley

W. von Borries-Eckendorf OHG, Leopoldshöhe DE

AT CZ DE HU PL UA

11 records

Bolina

Protection expired

Hordeum vulgare L. · Barley

Nordsaat Saatzuchtgesellschaft m.b.H. (DE)

CZ DE FR LV PL SE +1

11 records

Himalaya

Active

Hordeum vulgare L. · Barley

ULRICH and JOSEF BREUN

DK EE ES FR GR LT

13 records

Teuto

Active

Hordeum vulgare L. · Barley

Secobra Saatzucht

DE DK LU PL UA

12 records

Chariot

Active

Hordeum vulgare L. · Barley

PLANT BREEDING INTERNATIONAL

BE DE DK ES FR IE

17 records

Sydney

Active

Hordeum vulgare L. · Barley

SAATZUCHT STRENG-ENGELEN GMBH&CO. KG

DE EE LT LU PL

10 records

SU Midnight

Active

Hordeum vulgare L. · Barley

W.von Borries-Eckendorf, D

AT CZ DE PL UA

13 records

KWS Morris

Active

Hordeum vulgare L. · Barley

KWS LOCHOW GMBH, DE

AT CZ DE FR PL

10 records

Venezia

Active

Hordeum vulgare L. · Barley

Streng Wintergersten GbR

AT CZ DE DK LT PL

12 records

KWS Chilis

Active

Hordeum vulgare L. · Barley

KWS Lochow

AT CZ DE DK EE UA

10 records

KWS Wallace

Active

Hordeum vulgare L. · Barley

KWS Lochow

AT CZ DE EE UA

12 records

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