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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.

LG Belcanto

Active

Hordeum vulgare L. · Barley

LIMAGRAIN EUROPE

CZ DE EE FR LT NL +3
19 records

KWS Chrissie

Active

Hordeum vulgare L. · Barley

KWS LOCHOW GMBH, DE

CZ DE DK EE FI FR +4
22 records

Firefoxx

Active

Hordeum vulgare L. · Barley

Saaten-Union

DE DK EE FI FR LT +2
23 records

Wintmalt

Protection expired

Hordeum vulgare L. · Barley

Lochow-Petkus GmbH (DE)

CZ DE EE FR LT LV +3
19 records

Sonja

Active

Hordeum vulgare L. · Barley

W.ENGELEN

AT CZ DE DK ES FR +4
20 records

Paustian

Active

Hordeum vulgare L. · Barley

Sejet Planteforµdling I/S

DE DK EE FR IE LT +3
21 records

Odyssey

Active

Hordeum vulgare L. · Barley

Nickerson International Research SNC (FR)

CZ EE FR LT LU NL +2
21 records

Lomerit

Active

Hordeum vulgare L. · Barley

Lochow-Petkus GmbH (DE)

CZ DE DK FR HU LT +3
26 records

KWS Asta

Terminated

Hordeum vulgare L. · Barley

KWS LOCHOW GMBH, DE

AT CZ DE DK EE FR +4
16 records

Bordeaux

Active

Hordeum vulgare L. · Barley

Nordic Seed A-S, DK

AT CZ DE DK EE FR +4
20 records

Accordine

Active

Hordeum vulgare L. · Barley

Saaten-Union

CZ DE FI LT LU PL +2
19 records

Victoriana

Terminated

Hordeum vulgare L. · Barley

SCHINKEL BURKHARD

AT DE DK FR HU LT +3
15 records

Skyway

Active

Hordeum vulgare L. · Barley

SECOBRA RECHERCHES S.A.S

AT DE DK EE FI LT +2
20 records

Publican

Active

Hordeum vulgare L. · Barley

Syngenta UK Ltd

CZ DE DK EE FI FR +2
20 records

LG Casting

Active

Hordeum vulgare L. · Barley

Mark Glew

BG DK FR HU IE PL +2
18 records

Laverda

Active

Hordeum vulgare L. · Barley

SAATEN UNION RECHERCHE

AT CZ DE FR HU PL +1
16 records

KWS Cantton

Active

Hordeum vulgare L. · Barley

SCHINKEL BURKHARD

DE DK FI IE PL UA
14 records

Josefin

Protection expired

Hordeum vulgare L. · Barley

Vichel Madre, Hubert Blumel,

BG DE DK EE FR HR +3
15 records

JB Maltasia

Application submitted

Hordeum vulgare L. · Barley

SAATZUCHT JOSEF BREUN GMBH and CO.KG

AT CZ DE FI FR HU +2
16 records

Avalon

Active

Hordeum vulgare L. · Barley

SAATZUCHT JOSEF BREUN GmbH&Co.KG

CZ DE EE FI FR LT +2
20 records

Zhana

Active

Hordeum vulgare L. · Barley

Secobra Saatzucht

AT CZ DK SI SK UA
17 records

Signora

Protection expired

Hordeum vulgare L. · Barley

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

AT CZ DE ES FR HU +2
12 records

Sandra

Active

Hordeum vulgare L. · Barley

SECOBRA RECHERCHES S.A.S

AT CZ DE DK ES FR +1
19 records

Nevada

Application submitted

Hordeum vulgare L. · Barley

SECOBRA RECHERCHES S.A.S

DE DK ES FR IE SE +1
21 records

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