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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.

Venezia

Active

Hordeum vulgare L. · Barley

Streng Wintergersten GbR

AT CZ DE DK LT PL
12 records

KWS Joyau

Active

Hordeum vulgare L. · Barley

KWS Momont, F

FR IE IT LU
12 records

Viskosa

Terminated

Hordeum vulgare L. · Barley

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

AT DE EE FI FR
14 records

Reggae

Protection expired

Hordeum vulgare L. · Barley

van Beuningen, Leon

BE DK FR NL SE
15 records

Antonella

Active

Hordeum vulgare L. · Barley

Nordsaat Saatzucht GmbH Saatzucht Langenstein

CZ DE HU PL
10 records

KWS Dante

Terminated

Hordeum vulgare L. · Barley

KWS LOCHOW GMBH, DE

DE FR NL PL UA
12 records

Kaarle

Active

Hordeum vulgare L. · Barley

Mika Isolahti/Reino Aikasalo

EE FI LT LV SE
11 records

Marissa

Active

Hordeum vulgare L. · Barley

Saatzucht Donau GmbH & Co.KG

BE CZ DK LT UA
10 records

Leandra

Active

Hordeum vulgare L. · Barley

Saatzucht Josef Breun GmbH & Co.KG (DE)

AT DE FR LT
13 records

SU Hetti

Active

Hordeum vulgare L. · Barley

W. von Borries-Eckendorf OHG, Leopoldshöhe DE

CZ DE EE HU LT PL
10 records

Eifel

Active

Hordeum vulgare L. · Barley

SECOBRA RECHERCHES S.A.S

AT DE FI UA
11 records

Hobbit

Terminated

Hordeum vulgare L. · Barley

Syngenta Seeds

CZ DE DK FR UA
13 records

KWS Antonis

Active

Hordeum vulgare L. · Barley

KWS Lochow GmbH, Bergen DE

AT CZ DE HU PL
9 records

Blenheim

Protection expired

Hordeum vulgare L. · Barley

PLANT BREEDING INTERNATIONAL CAMBRIDGE

DK ES IE NL SE
13 records

Henley

Active

Hordeum vulgare L. · Barley

Nickerson International Research S.N.C.

CZ FR HR LT
12 records

Prosa

Application submitted

Hordeum vulgare L. · Barley

Probstdorfer Saatzucht GmbH&Co KG (AT)

AT CZ FR HR HU PL
14 records

KWS Faro

Active

Hordeum vulgare L. · Barley

SARL ADRIEN MOMONT ET FILS, FR

DE FR IT UA
14 records

Cerbinetta

Active

Hordeum vulgare L. · Barley

Claus Einfeldt

AT FI SK UA
11 records

Roxana

Protection expired

Hordeum vulgare L. · Barley

Saatzucht Josef Breun GdbR (DE)

AT DE DK FR HU
11 records

KWS Vermont

Active

Hordeum vulgare L. · Barley

SCHINKEL BURKHARD

DE DK PL UA
11 records

LG Campus

Active

Hordeum vulgare L. · Barley

LIMAGRAIN EUROPE

AT CZ DE FR PL
11 records

Sensation

Active

Hordeum vulgare L. · Barley

Nickerson International Research geie, FR

CZ DE FR LU
13 records

LG Caruso

Active

Hordeum vulgare L. · Barley

LIMAGRAIN EUROPE

DE EE FR LT PL
11 records

KWS Chilis

Active

Hordeum vulgare L. · Barley

KWS Lochow

AT CZ DE DK EE UA
10 records

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