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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.

Torrild

Active

Triticum aestivum L. · Bread wheat

W. von Borries-Eckendorf GmbH & Co.KG

HU LT LV PL SK UA
15 records

Tobak

Active

Triticum aestivum L. · Bread wheat

W. von Borries-Eckendorf GmbH & Co.KG

EE FR LT PL UA
15 records

Tacitus

Active

Triticum aestivum L. · Bread wheat

Saatzucht Donau GmbH & Co.KG

AT HR HU LT PL SK +1
12 records

Sofru

Active

Triticum aestivum L. · Bread wheat

Pierre GARRAUD

FR HR HU IT UA
16 records

Rumor

Active

Triticum aestivum L. · Bread wheat

Strube Research GmbH & Co. KG, D- 38387 Sollingen

DK LT UA
12 records

Nogal

Active

Triticum aestivum L. · Bread wheat

SAS FLORIMOND-DESPREZ Veuve et Fils

ES HR IT RO
19 records

LG Apilco

Active

Triticum aestivum L. · Bread wheat

Limagrain Europe, FR

BG FR HU RO SK
16 records

KWS Sharki

Active

Triticum aestivum L. · Bread wheat

REINER BOTHE

AT EE LT LU LV UA
18 records

KWS Magic

Active

Triticum aestivum L. · Bread wheat

KWS Lochow, D

AT BE DK HR PL SK
13 records

KWS Emil

Active

Triticum aestivum L. · Bread wheat

KWS Lochow

EE LT LV UA
15 records

Faustus

Active

Triticum aestivum L. · Bread wheat

Strube, D

BE FR HU LT UA
16 records

Bonanza

Active

Triticum aestivum L. · Bread wheat

W. von Borries-Eckendorf GmbH & Co.KG

DK EE LT PL UA
14 records

Basilio

Active

Triticum aestivum L. · Bread wheat

SAS FLORIMOND-DESPREZ Veuve et Fils

ES HR HU UA
19 records

Arabella

Active

Triticum aestivum L. · Bread wheat

Danko Hodowla Roslin Sp.z.o.o.

EE LT LV PL UA
16 records

Apollo

Application submitted

Triticum aestivum L. · Bread wheat

ULRICH and JOSEF BREUN

AT BE DK FR IE NL
15 records

Anapurna

Active

Triticum aestivum L. · Bread wheat

Nickerson International Research SNC, F

BG FR HU IT RO
16 records

WPB Troy

Active

Triticum aestivum L. · Bread wheat

WIERSUM PLANTBREEDING

EE FI LT PL UA
14 records

Ténor

Active

Triticum aestivum L. · Bread wheat

Unisigma GIE Recherche et Selection (FR)

FR HR IT PT UA
19 records

SU Mangold

Active

Triticum aestivum L. · Bread wheat

Strube Research GmbH & Co. KG, DE

DK EE FR LT PL UA
14 records

Sideral

Protection expired

Triticum aestivum L. · Bread wheat

ETS.C.C.BENOIST

BE DK ES FR PT SI
13 records

Maurizio

Active

Triticum aestivum L. · Bread wheat

Saatzucht Donau, A

AT HU RO SK UA
14 records

Ludwig

Active

Triticum aestivum L. · Bread wheat

SAATZUCHT DONAU GES.M.B.H. & COKG

AT FR HR HU PL SI
15 records

LG Astrolabe

Active

Triticum aestivum L. · Bread wheat

Limagrain Europe, F

BG FR HU IT RO
14 records

LG Ascona

Active

Triticum aestivum L. · Bread wheat

Limagrain Europe, F

BG FR HU IT RO
15 records

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