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
SEJET PLANT BREEDING
Triticum aestivum L. · Bread wheat
Mauthner Warenhandels- und Vermögensverwaltungs GmbH
Triticum aestivum L. · Bread wheat
W WEIBULL
Triticum aestivum L. · Bread wheat
Saatzucht Donau, A
Triticum aestivum L. · Bread wheat
Landwirtschaftliche Lehranstalten Triesdorf
Triticum aestivum L. · Bread wheat
RAGT SEEDS LTD
Triticum aestivum L. · Bread wheat
Danko Hodowla Roslin Sp.z.o.o.
Triticum aestivum L. · Bread wheat
Syngenta Participations AG, 4058 Basel
Triticum aestivum L. · Bread wheat
Saatzucht Donau GmbH, Probstdorf AT
Triticum aestivum L. · Bread wheat
Hodowla Roslin Strzelce Sp z.o.o. Grupa IHAR
Triticum aestivum L. · Bread wheat
SAATZUCHT HANS SCHWEIGER & CO OHG
Triticum aestivum L. · Bread wheat
Sud Cereales (FR)
Triticum aestivum L. · Bread wheat
Pernilla Vallenback
Triticum aestivum L. · Bread wheat
LEMAIRE DEFFONTAINES S.A.S.
Triticum aestivum L. · Bread wheat
Danko Hodowla Roslin Sp.z.o.o.
Triticum aestivum L. · Bread wheat
Strube Research GmbH&Co KG
Triticum aestivum L. · Bread wheat
Strube Research GmbH&Co KG
Triticum aestivum L. · Bread wheat
Syngenta Hadmersleben
Triticum aestivum L. · Bread wheat
Saatzucht Donau GmbH, Probstdorf AT
Triticum aestivum L. · Bread wheat
Wiersum Plantbreeding B.V.
Triticum aestivum L. · Bread wheat
WIERSUM PLANTBREEDING
Triticum aestivum L. · Bread wheat
Wiersum Plantbreeding B.V.
Triticum aestivum L. · Bread wheat
Wiersum Plantbreeding B.V.
Triticum aestivum L. · Bread wheat
SECOBRA RECHERCHES S.A.S