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.

MIP Status

Active

Hordeum vulgare L. · Barley

HUDZENKO VOLODYMYR, DEMYDOV OLEKSANDR, KOCHMARSKYI VALENTYN, BOBYR OLHA, POLISCHUK TETIANA

2 records

Sion

Active

Hordeum vulgare L. · Barley

Smolii Svitlana Ivanivna, Nezhbirska Liudmyla Ivanivna, Korniichuk Oleksandr Vasylovych, Doroshcuk Vasyl Oleksiiovych, Mareniuk Oleksandr Borysovych,

2 records

Oxford

Terminated

Hordeum vulgare L. · Barley

Nickerson International Research S.N.C.

1 record

Ūla

Terminated

Hordeum vulgare L. · Barley

Lietuvos agrarinių ir miškų mokslų centro filialas Žemdirbystės institutas

1 record

BB Sandra

Active

Hordeum vulgare L. · Barley

BERTHOLD BAUER

1 record

Ismene

Withdrawn

Hordeum vulgare L. · Barley

NORD| NORDSAAT Agrargesellschaft mit beschraenkter Haftung

1 record

Vzirets`

Terminated

Hordeum vulgare L. · Barley

Huseinov Vali Mamedovych, Vesna Serhii Viktorovych, Naumov Oleksii Hermanovych, Vasko Nataliia Ivanivna, Kozachenko Mykhailo Romanovych,

2 records

MIP Yanus

Active

Hordeum vulgare L. · Barley

Lysenko Anna Anatoliivna, Demydov Oleksandr Anatoliiovych, Polishcuk Tetiana Petrivna, Hudzenko Volodymyr Mykolaiovych,

2 records

BIRGIT

Withdrawn

Hordeum vulgare L. · Barley

W. von Borries-Eckendorf GmbH & Co.KG

2 records

Dyvo Nosivshchyny

Active

Hordeum vulgare L. · Barley

Dvorska Svitlana Volodymyrivna, Buniak Nataliia Mykhailivna, Buniak Nataliia Mykolaivna, Sardak Mariia Ivanivna, Sardak Mykrla Oleksiiovych,

2 records

Airis

Terminated

Hordeum vulgare L. · Barley

Mareniuk Oleksandr Borysovych, Suslova Tetiana Vasylivna, Korniichuk Oleksii Oleksandrovych, Honchar Tetiana Mykolaivna, Betsenko Liudmyla Bronislavivna, Koniichuk Oleksandr Vasyl`ovych, Doroschuk Vasyl` Oleksiiovych,

2 records