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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.

Meltan

Protection expired

Hordeum vulgare L. · Barley

W WEIBULL

AT DE DK EE ES FR +1
21 records

Marnie

Active

Hordeum vulgare L. · Barley

Saatzucht Josef Breun GdbR (DE)

AT DE DK FR HR HU +2
16 records

LG Tosca

Active

Hordeum vulgare L. · Barley

LIMAGRAIN EUROPE

CZ DE FR NL PL SK +1
15 records

LG Allegro

Active

Hordeum vulgare L. · Barley

Limagrain Nederland B.V.

AT CZ DE FR NL PL +2
17 records

Lexy

Active

Hordeum vulgare L. · Barley

SAATZUCHT JOSEF BREUN GMBH and CO.KG

DE EE FI FR LT PL +1
22 records

KWS Tonic

Active

Hordeum vulgare L. · Barley

KWS LOCHOW GMBH, DE

AT CZ DE DK FR LU +1
15 records

KWS Higgins

Active

Hordeum vulgare L. · Barley

KWS Lochow

AT CZ DE FI LT LU +2
17 records

Jakubus

Active

Hordeum vulgare L. · Barley

Nordsaat Saatzuchtgesellschaft m.b.H. (DE)

CZ EE FR HU LT PL +1
18 records

Hanka

Active

Hordeum vulgare L. · Barley

Saatzucht Hadmersleben Gmbh (DE)

AT DE DK EE FR LT +3
19 records

Goldie

Active

Hordeum vulgare L. · Barley

W WEIBULL

DK EE ES FR NL SE
19 records

Focus

Active

Hordeum vulgare L. · Barley

SECOBRA RECHERCHES S.A.S

CZ DE DK FI FR UA
22 records

Alexis

Active

Hordeum vulgare L. · Barley

ULRICH and JOSEF BREUN

DE DK ES FR HR IE +2
18 records

Wendy

Active

Hordeum vulgare L. · Barley

Nordsaat Saatzuchtgesellschaft mbH

AT CZ DE FR HU PL +1
12 records

Orthega

Protection expired

Hordeum vulgare L. · Barley

Saatzucht Lochow-Petkus (DE)

CZ DE EE HR LT PL +2
15 records

NFC Tipple

Active

Hordeum vulgare L. · Barley

Syngenta UK Ltd

DE DK FI FR HR LT
17 records

KWS Tenor

Active

Hordeum vulgare L. · Barley

KWS Lochow

CZ DE EE HU SK UA
16 records

KWS Orbit

Active

Hordeum vulgare L. · Barley

KWS LOCHOW GMBH, DE

CZ DE EE FR LU
14 records

KWS Donau

Active

Hordeum vulgare L. · Barley

KWS Lochow, D

AT CZ DE RO UA
17 records

Kornelija

Active

Hordeum vulgare L. · Barley

Institute of Agricultural Resources and Economics, Stende Research Centre, "Dizzemes", Dizstende

EE FI LT LV PL
12 records

Klarinette

Active

Hordeum vulgare L. · Barley

SECOBRA RECHERCHES S.A.S

CZ DE FR LT LU PL +1
13 records

Kerstin

Active

Hordeum vulgare L. · Barley

Nordsaat Saatzuchtgesellschaft mbH

AT DE EE FR LT PL
14 records

JB Flavour

Active

Hordeum vulgare L. · Barley

Saatzucht Josef Breun GdbR (DE)

CZ DE DK EE FR LT
14 records

Ingmar

Protection expired

Hordeum vulgare L. · Barley

Nordsaat Saatzucht GmbH Saatzucht Langenstein

DE DK FI LT PL UA
15 records

Flair

Active

Hordeum vulgare L. · Barley

Sejet Planteforµdling I/S

DK EE FI FR LT NL +1
16 records

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