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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.

KWS Meridian

Active

Hordeum vulgare L. · Barley

Lochow-Petkus GmbH (DE)

AT CZ DE DK EE FR +6
25 records

RGT Asteroid

Active

Hordeum vulgare L. · Barley

Regis Dupont

DE FR UA
15 records

SY Dakoota

Active

Hordeum vulgare L. · Barley

Syngenta Participations,CH

CZ DE FR UA
12 records

RGT Planet

Active

Hordeum vulgare L. · Barley

Ragt, F

AT CZ DE DK EE FI +8
45 records

Xanadu

Active

Hordeum vulgare L. · Barley

Saaten-Union

AT CZ DE EE FI FR +7
29 records

Conchita

Active

Hordeum vulgare L. · Barley

SCHINKEL BURKHARD

AT DE DK EE FI FR +7
35 records

Laureate

Active

Hordeum vulgare L. · Barley

Syngenta UK Ltd

AT CZ DE EE FI FR +7
35 records

Salome

Active

Hordeum vulgare L. · Barley

Saaten-Union

AT CZ DE DK EE FI +7
29 records

Tolar

Active

Hordeum vulgare L. · Barley

PLANT SELECT, SPOL. S R.O.

BG CZ EE FI HR HU +6
24 records

Quench

Active

Hordeum vulgare L. · Barley

Syngenta UK Ltd

AT DE DK EE FI FR +5
26 records

KWS Fantex

Active

Hordeum vulgare L. · Barley

SCHINKEL BURKHARD

CZ DE DK EE FI FR +4
26 records

Henrike

Active

Hordeum vulgare L. · Barley

Nordsaat Saatzuchtgesellschaft mbH

AT CZ DE EE FR HR +5
22 records

Fandaga

Active

Hordeum vulgare L. · Barley

Saaten-Union

CZ EE FI FR HU LT +2
29 records

Explorer

Active

Hordeum vulgare L. · Barley

VRDOLJAK GUSTAVO OMAR

CZ DE FR LT SK UA
28 records

Grace

Active

Hordeum vulgare L. · Barley

Nordsaat Saatzuchtgesellschaft m.b.H. (DE)

CZ DE DK EE FI FR +3
31 records

KWS Jessie

Active

Hordeum vulgare L. · Barley

KWS LOCHOW GMBH, DE

AT CZ DE FI FR LT +4
22 records

KWS Irina

Active

Hordeum vulgare L. · Barley

KWS LOCHOW GMBH, DE

CZ DE EE FI FR IE +3
28 records

KWS Beckie

Active

Hordeum vulgare L. · Barley

SCHINKEL BURKHARD

CZ DE DK EE FR LT +4
21 records

Kangoo

Active

Hordeum vulgare L. · Barley

Limagrain Nederland B.V.

AT CZ DE FR HR LT +3
21 records

Ellinor

Active

Hordeum vulgare L. · Barley

SAATZUCHT JOSEF BREUN GMBH and CO.KG

AT CZ DK EE FI FR +4
27 records

Bente

Active

Hordeum vulgare L. · Barley

Saaten-Union

CZ DE DK EE FR HU +3
26 records

Uta

Active

Hordeum vulgare L. · Barley

UNIV. PROF. DR. HERMAN HÄNSEL

CZ DE DK EE FI FR +5
25 records

Sunshine

Active

Hordeum vulgare L. · Barley

SAATZUCHT JOSEF BREUN GmbH&Co.KG

AT CZ DE EE FI FR +4
21 records

LG Nabuco

Active

Hordeum vulgare L. · Barley

LIMAGRAIN EUROPE

AT CZ DE DK FI FR +4
20 records

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