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Diseases

Powdery Mildew of Barley

Hordeum vulgare L.

A fungal disease of barley caused by the obligate biotroph Blumeria graminis f. sp. hordei, which manifests as a white coating on the above-ground organs of the plant.

In the reference 758 varieties crop Barley, where this is mentioned in the description.

The causal agent of the disease is the highly specialized fungus Blumeria graminis f. sp. hordei. The pathogen infects all above-ground plant organs, forming a superficial mycelium that attaches via appressoria and directs haustoria into epidermal cells for nutrient uptake. In mild climates, the fungus survives on winter crops, while in harsh conditions, it persists in the form of cleistothecia on plant debris.

Symptoms appear as a white, web-like coating that eventually densifies into cotton-like patches, which take on a yellowish-grey hue. At later stages, black dots—cleistothecia—develop within the coating. The infection leads to yellowing and wilting of leaves, impairment of photosynthesis, and grain shriveling.

Genetic protection of barley is based on the use of more than 100 identified resistance alleles, including the Mla and Ml genes and the mlo locus. Of particular importance are the mlo genes (e.g., mlo1, mlo11), which provide effective resistance by preventing the penetration of fungal haustoria into plant cells.

General information about the subject — on the page Powdery mildew.

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.

Amarena

Active

Hordeum vulgare L. · Barley

SAATEN UNION RECHERCHE

CZ DE FR LT PL UA
14 records

Yoda

Active

Hordeum vulgare L. · Barley

SAATZUCHT JOSEF BREUN GMBH and CO.KG

DE EE FI FR LT UA
17 records

Teuto

Active

Hordeum vulgare L. · Barley

Secobra Saatzucht

DE DK LU PL UA
12 records

SY Signet

Active

Hordeum vulgare L. · Barley

Syngenta Crop Protection AG

CZ DE DK FI LT NL
14 records

Sydney

Active

Hordeum vulgare L. · Barley

SAATZUCHT STRENG-ENGELEN GMBH&CO. KG

DE EE LT LU PL
10 records

SW Wikingett

Terminated

Hordeum vulgare L. · Barley

SW SEED GMBH| SW Seed GmbH

DE DK EE FI LT LV +1
16 records

SU Midnight

Active

Hordeum vulgare L. · Barley

W.von Borries-Eckendorf, D

AT CZ DE PL UA
13 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

Siberia

Active

Hordeum vulgare L. · Barley

SEMUNDO| SW Seed GmbH

DE FR HU IT PL SI
14 records

Propino

Active

Hordeum vulgare L. · Barley

Syngenta UK Ltd

DE EE FI FR LT LV
16 records

NOS Gambit

Active

Hordeum vulgare L. · Barley

Nordic Seed A/S

DK EE FI NL PL UA
15 records

Naomie

Active

Hordeum vulgare L. · Barley

Saaten Union Recherche (FR)

DE EE FR LT LV UA
15 records

Milford

Active

Hordeum vulgare L. · Barley

SAATZUCHT JOSEF BREUN GMBH and CO.KG

DE EE FI FR LT LU
15 records

Malz

Active

Hordeum vulgare L. · Barley

Svacina Petr

CZ HR HU NL SK UA
14 records

LG Diablo

Active

Hordeum vulgare L. · Barley

LIMAGRAIN EUROPE

DK EE NL PL
16 records

KWS Morris

Active

Hordeum vulgare L. · Barley

KWS LOCHOW GMBH, DE

AT CZ DE FR PL
10 records

KWS Cassia

Active

Hordeum vulgare L. · Barley

KWS UK LTD

AT DE FR IE LV
12 records

Joker

Active

Hordeum vulgare L. · Barley

KWS LOCHOW GMBH, DE

DE EE FR LT LV PL
12 records

Feedway

Active

Hordeum vulgare L. · Barley

Nordic Seed A/S

DK EE FI LT PL SE
14 records

Collie

Active

Hordeum vulgare L. · Barley

Saatzucht Josef Breun, D

DE DK ES FR IE
16 records

Bolina

Protection expired

Hordeum vulgare L. · Barley

Nordsaat Saatzuchtgesellschaft m.b.H. (DE)

CZ DE FR LV PL SE +1
11 records

Azrah

Active

Hordeum vulgare L. · Barley

Stefan Streng

AT CZ PL UA
12 records

Viskosa

Terminated

Hordeum vulgare L. · Barley

RICHTER| Edelgard Richter in Fa. NORDSAAT Saatzucht- gesellschaft mbH

AT DE EE FI FR
14 records

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