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Diseases

Powdery mildew of oats

Avena sativa L.

A fungal disease of common oats caused by the specialized form of the ascomycete Blumeria graminis f. sp. avenae. It manifests as a white, web-like coating on plant organs, which reduces the intensity of photosynthesis and grain yield by 10–20% or more.

In the reference 176 varieties crop Oat, where this is mentioned in the description.

The pathogen infects plants at early developmental stages, forming matte spots on leaf sheaths that transform into a loose white coating. During the growing season, the coating densifies into cotton-like pads on leaves and stems, and by maturity, it acquires a dirty-gray hue and becomes covered with black dots — cleistothecia. The infection leads to the destruction of chlorophyll, reduced tillering, and a slowdown in the overall growth of the crop.

The pathogen is characterized by high physiological specialization and the presence of numerous races with varying virulence. Genetic resistance to powdery mildew in cultivated oats is limited and controlled by four dominant genes. For the breeding of new varieties, resistance sources from wild species such as Avena barbata, Avena strigosa, and Avena hirtula are actively utilized.

General information about the subject — on the page Powdery mildew.

Sources8

Varieties of Oat 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.

Oberon

Terminated

Avena sativa L. · Oat

SELGEN A.S

AT CZ DE FR
6 records

WPB Isabel

Active

Avena sativa L. · Oat

Wiersum Plantbreeding B.V.

IE PL
7 records

Armani

Active

Avena sativa L. · Oat

Saatzucht Bauer GmbH & Co KG

DE EE PL
8 records

Nike

Active

Avena sativa L. · Oat

Lantmannen ek for, SE 268-81 Svalov

EE SE
7 records

WPB Mohair

Active

Avena sativa L. · Oat

Wiersum Plantbreeding B.V.

DK EE LT
6 records

SW Kerstin

Active

Avena sativa L. · Oat

Svalöf Weibull (SE)

EE LT LV SE
9 records

Keely

Active

Avena sativa L. · Oat

NORDSAAT Saatzuchtgesellschaft mbH - Zuchtstation Granskevitz - Dr. Steffen Beuch

DE FR IE
7 records

Peniarth

Active

Avena sativa L. · Oat

Plant Breeding International Cambridge Ltd (GB)

FR IE
7 records

Galant

Active

Avena sativa L. · Oat

Lantmaennen ek foer

EE LT SE
7 records

Elison

Active

Avena sativa L. · Oat

Saatzucht Edelhof

AT CZ LU
7 records

Gramena

Terminated

Avena sativa L. · Oat

Nordsaat Saatzuchtgesellschaft mbH

DE DK PL
8 records

Proxy

Active

Avena sativa L. · Oat

Nordsaat Saatzucht GmbH, D-38895 Langenstein, OT Bohnshausen

FI SE
6 records

Galeon

Active

Avena sativa L. · Oat

Danko Hodowla Roslin Sp.z.o.o.

LT PL SE UA
8 records

Vodka

Active

Avena sativa L. · Oat

SARL ADRIEN MOMONT ET FILS, FR

FR IE LU
7 records

Celeste

Active

Avena sativa L. · Oat

Selgen a.s., CZ

FR LU
5 records

Romulus

Active

Avena sativa L. · Oat

Danko Hodowla Roslin Sp.z.o.o.

FI PL
7 records

Mascani

Active

Avena sativa L. · Oat

Aberystwyth University (IBERS)

IE NL
5 records

WPB Elyann

Active

Avena sativa L. · Oat

Wiersum Plantbreeding BV, 9670 AA Winschoten

NL
5 records

Salomon

Terminated

Avena sativa L. · Oat

Wenzelsche Saatzucht und Lagerhallen GmbH u. Co KG

AT DE UA
7 records

KWS Titant

Active

Avena sativa L. · Oat

KWS MOMONT RECHERCHE SARL, FR

EE FR IE
6 records

Hetman

Protection expired

Avena sativa L. · Oat

Hodowla Buraka Pastewnego Skarbu Panstwa w Krakowie

HU LT PL
6 records

Firth

Protection expired

Avena sativa L. · Oat

Lochow-Petkus GmbH (DE)

DE FR
6 records

Elron

Active

Avena sativa L. · Oat

Landwirtschaftliche Fachschule Edelhof Saatzucht

AT
6 records

WPB Oskar

Active

Avena sativa L. · Oat

Wiersum Plantbreeding B.V.

DK EE LT
5 records