Diseases
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.
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
Syngenta Participations,CH
Triticum aestivum L. · Bread wheat
Wiersum Plantbreeding B.V.
Triticum aestivum L. · Bread wheat
Caussade Semences, F
Triticum aestivum L. · Bread wheat
LIMAGRAIN EUROPE
Triticum aestivum L. · Bread wheat
LOCHOW-PETKUS
Triticum aestivum L. · Bread wheat
Nina Pfeiffer, Erhard Ebmeyer
Triticum aestivum L. · Bread wheat
RAGT 2N S.A.S
Triticum aestivum L. · Bread wheat
Wiersum Plantbreeding B.V.
Triticum aestivum L. · Bread wheat
SAATEN UNION RECHERCHE
Triticum aestivum L. · Bread wheat
STRUBE GMBH&CO.KG
Triticum aestivum L. · Bread wheat
SAATZUCHT JOSEF BREUN GMBH and CO.KG
Triticum aestivum L. · Bread wheat
WIERSUM PLANTBREEDING
Triticum aestivum L. · Bread wheat
LEMAIRE DEFFONTAINES S.A.S.
Triticum aestivum L. · Bread wheat
Delley Seeds and Plants
Triticum aestivum L. · Bread wheat
Saaten Union Recherche SARL, Estrées-Saint -Denis FR
Triticum aestivum L. · Bread wheat
SAULESCU NICOLAEITTU GHEORGHEGIURA AURELITTU MARIANAMUSTATEA POMPILIU
Triticum aestivum L. · Bread wheat
Strube, D
Triticum aestivum L. · Bread wheat
ETS.C.C.BENOIST
Triticum aestivum L. · Bread wheat
Saatzuchtwirtschaft Firlbeck GmbH + Co.KG
Triticum aestivum L. · Bread wheat
RAGT 2N S.A.S
Triticum aestivum L. · Bread wheat
Nina Pfeiffer
Triticum aestivum L. · Bread wheat
KWS Lochow
Triticum aestivum L. · Bread wheat
Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR
Triticum aestivum L. · Bread wheat
DSP Delley Samen und Pflanzen AG