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Diseases

Powdery Mildew of Soft Wheat

Triticum aestivum L.

A fungal disease of soft wheat caused by the specialized pathogen Blumeria graminis f. sp. tritici, affecting the above-ground organs of the plant. The disease leads to a reduction in photosynthesis, the formation of shriveled grain, and empty ears.

In the reference 1 157 varieties crop Bread wheat, where this is mentioned in the description.

The causative agent of the disease is the obligate biotroph Blumeria graminis (DC.) Speer f. sp. tritici Marchal. Symptoms appear as a white, web-like coating on leaves, leaf sheaths, and stems, which eventually thickens into cotton-like patches; at the final stage, cleistothecia—black dots representing the fruiting bodies—form on the mycelium.

The harmfulness of powdery mildew lies in the destruction of chlorophyll and the retardation of tillering processes. Pathogen populations are characterized by high variability in virulence, which allows them to overcome specific varietal resistance genes denoted by the symbol Pm (Powdery mildew).

Breeding for resistance relies on the use of more than 30 Pm loci, including their allelic variants. Due to the adaptability of the fungus, breeding practices involve the "pyramiding" of several genes within a single genotype to ensure durability of resistance, with some resistance genes potentially being linked to protection genes against other pathogens.

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

Sources8

Varieties of Bread wheat 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.

Triticum aestivum L. · Bread wheat

NICKERSON SUR, S.A.

ES
5 records

Triticum aestivum L. · Bread wheat

KWS Lochow

EE LT PL
4 records

Triticum aestivum L. · Bread wheat

MHR SEEDS LIMITED

PL
5 records

Merkawa

Active

Triticum aestivum L. · Bread wheat

Hodowla Roslin Smolice Sp.z o.o Grupa IHAR

PL
6 records

Penta

Terminated

Triticum aestivum L. · Bread wheat

Sejet Planteforaedling I,S

DK LT
6 records

Triticum aestivum L. · Bread wheat

KWS UK LTD

DK
6 records

Serenada

Active

Triticum aestivum L. · Bread wheat

Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR

PL
5 records

Tambor

Active

Triticum aestivum L. · Bread wheat

SW Seed BV

AT NL
6 records

Enrico

Active

Triticum aestivum L. · Bread wheat

Landwirtschaftliche Fachschule Edelhof Saatzucht

AT
6 records

Bogatka

Active

Triticum aestivum L. · Bread wheat

Danko Hodowla Roslin Sp.z.o.o.

PL
7 records

Orloge

Active

Triticum aestivum L. · Bread wheat

Saatzucht Josef Breun GmbH & Co.KG (DE)

FR
5 records

Ortolan

Active

Triticum aestivum L. · Bread wheat

Florimond Desprez Veuve et Fils, FR

FR
5 records

Sophytra

Active

Triticum aestivum L. · Bread wheat

Nickerson International Research S.N.C.

FR
6 records

Monviso

Active

Triticum aestivum L. · Bread wheat

Secobra Recherches, F

IT
6 records

Mangold

Terminated

Triticum aestivum L. · Bread wheat

Strube Research GmbH & Co. KG, DE

DK FR NL
5 records

Sparrow

Active

Triticum aestivum L. · Bread wheat

KWS UK LTD

AT
7 records

WPB Scotch

Terminated

Triticum aestivum L. · Bread wheat

Wiersum Plantbreeding B.V.

PL SE
5 records

Jasmund

Active

Triticum aestivum L. · Bread wheat

SINA ISABEL STRUBE

EE
5 records

Triticum aestivum L. · Bread wheat

RAGT 2N S.A.S

DK
6 records

Arcachon

Active

Triticum aestivum L. · Bread wheat

LEMAIRE DEFFONTAINES S.A.S.

FR UA
5 records

Bisanzio

Active

Triticum aestivum L. · Bread wheat

Apsovsementi S.p.A., Co.Na.Se. Soc. Coop. Agr.

IT
6 records

Brimstone

Terminated

Triticum aestivum L. · Bread wheat

PLANT BREEDING INTERNATIONAL CAMBRIDGE

DK FR IE
7 records

Myriad

Active

Triticum aestivum L. · Bread wheat

LIMAGRAIN EUROPE

BE
5 records

Triticum aestivum L. · Bread wheat

KWS UK LTD

BE
5 records

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