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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.

Paldin

Terminated

Hordeum vulgare L. · Barley

N. Ganusheva, G. Hristozova

BG
2 records

Taarn

Terminated

Hordeum vulgare L. · Barley

Lantmännen SW Seed

DK SE
4 records

COLSTON

Terminated

Hordeum vulgare L. · Barley

Syngenta UK Ltd

DK
3 records

Gorast

Active

Hordeum vulgare L. · Barley

Hristo Gorastev, Nevenka Ganusheva, Stoyka Grancharova, Ganka Hristozova

BG
3 records

Rodion

Protection expired

Hordeum vulgare L. · Barley

Hodowla Roslin Smolice Sp.z o.o Grupa IHAR

PL
3 records

ILKA

Terminated

Hordeum vulgare L. · Barley

DEUTSCHE SAATGUTGESELLSCHAFT

IE
3 records

Hordeum vulgare L. · Barley

Stelmakh Adolf Fomych, Lehkun Ihor Borysovych, Sheremet Oleksandr Martynovych, Linchevskyi Anatolii Adamovych,

UA
3 records

Aivenho

Active

Hordeum vulgare L. · Barley

Lehkun Ihor Borysovych, Sichniak Vira IUkhymivna, Sheremet Oleksandr Martynovych, Linchevskyi Anatolii Adamovych,

UA
3 records

Roulette

Application submitted

Hordeum vulgare L. · Barley

Secobra Recherches S.A.

AT
3 records

Narrator

Active

Hordeum vulgare L. · Barley

Poznanska Hodowla Roslin Sp. z o.o

PL
4 records

CADIZ

Active

Hordeum vulgare L. · Barley

NORDIC SEED

DK
3 records

Hordeum vulgare L. · Barley

CSIC/SEMILLAS BATLLE

ES
3 records

Hordeum vulgare L. · Barley

Stel`makh Adol`f Khomych, Sheremet Oleksandr Martynovych, Lehkun Ihor Borysovych, Linchevskyi Anatolii Adamovych,

UA
3 records

Pericula

Terminated

Hordeum vulgare L. · Barley

Saatzuchtgesellschaft Streng's Erben GmbH & Co. KG

AT
2 records

Agrilo

Terminated

Hordeum vulgare L. · Barley

LOCHOW-PETKUS

CZ DK
3 records

Gil

Protection expired

Hordeum vulgare L. · Barley

Hodowla Roslin Smolice Sp.z o.o Grupa IHAR

PL
3 records

Hordeum vulgare L. · Barley

Hoiman Serhii Volodymyrovych, Sheremet Oleksandr Martynovych, Lehkun Ihor Borysovych, Linchevskyi Anatolii Adamovych,

UA
3 records

KEG

Terminated

Hordeum vulgare L. · Barley

Rothwell Plant Breeders

DK
4 records

Refren

Protection expired

Hordeum vulgare L. · Barley

Hodowla Roslin Smolice Sp.z o.o Grupa IHAR

PL
3 records

Carlsberg ii

Terminated

Hordeum vulgare L. · Barley

Carlsberg Research (DK)

DK FR
2 records

Maris canon

Terminated

Hordeum vulgare L. · Barley

Plant Breeding International Cambridge Ltd (GB)

FR
3 records

Pasjonat

Active

Hordeum vulgare L. · Barley

Poznanska Hodowla Roslin Sp. z o.o

PL
4 records

Hordeum vulgare L. · Barley

Limagrain Europe S.A.S

CZ
3 records

MARIS CONCORD

Terminated

Hordeum vulgare L. · Barley

NATIONAL INSTITUTE OF AGRICULTURAL BOTANY

DK
2 records

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