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
Roothaan, M.E.
Triticum aestivum L. · Bread wheat
UO «GRODNENSKIJ GOSUDARSTVENNYJ AGRARNYJ UNIVERSITET»
Triticum aestivum L. · Bread wheat
KWS UK LTD
Triticum aestivum L. · Bread wheat
Zoltán Bedő^^^László Láng^^^Ottó Veisz^^^Gyula Vida^^^Ildikó Karsai^^^Mariann Rákszegi^^^Klára Mészáros
Triticum aestivum L. · Bread wheat
Lantmaennen ek foer
Triticum aestivum L. · Bread wheat
Saatzucht Donau GmbH, Probstdorf AT
Triticum aestivum L. · Bread wheat
Lantmännen SW Seed
Triticum aestivum L. · Bread wheat
Wiersum Plantbreeding B.V.
Triticum aestivum L. · Bread wheat
Sejet Planteforaedling I,S
Triticum aestivum L. · Bread wheat
KWS Momont Recherche Sarl
Triticum aestivum L. · Bread wheat
Instytut Hodowli i Aklimatyzacji Roslin Panstwowy Instytut Badawczy
Triticum aestivum L. · Bread wheat
Strube Research GmbH&Co KG
Triticum aestivum L. · Bread wheat
Lantmaennen ek foer
Triticum aestivum L. · Bread wheat
Apsovsementi, I
Triticum aestivum L. · Bread wheat
Ragt, F
Triticum aestivum L. · Bread wheat
Sarl Adrien Momont et Fils, F
Triticum aestivum L. · Bread wheat
KWS Momont, F
Triticum aestivum L. · Bread wheat
Syngenta Participations AG| CH
Triticum aestivum L. · Bread wheat
Apsovsementi, I
Triticum aestivum L. · Bread wheat
SELGEN A.S
Triticum aestivum L. · Bread wheat
Saatzucht Donau, A
Triticum aestivum L. · Bread wheat
Secobra Recherches, F
Triticum aestivum L. · Bread wheat
W WEIBULL
Triticum aestivum L. · Bread wheat
Pajbjergfonden, DK-8300 Odder