Diseases
Powdery Mildew of Soft Wheat
Triticum aestivum L.
A fungal disease of wheat caused by Blumeria graminis f. sp. tritici. It manifests as a white coating on the aerial parts of the plant and is managed in breeding programs through the use of Pm resistance genes.
In the reference 22 varieties crop Bread wheat, where this is mentioned in the description.
The causal agent of powdery mildew in wheat is the fungus Blumeria graminis f. sp. tritici, whose conidial stage is described as Oidium monilioides; this often leads to the erroneous use of the term "oidium" for this crop. On the leaves, stems, and leaf sheaths, the pathogen forms a white, spiderweb-like coating, which eventually densifies, darkens to a grayish hue, and becomes covered with black fruiting bodies known as cleistothecia.
The pathogen is characterized by high specialization and race diversity. In breeding work aimed at improving wheat resistance to the disease, the use of specific Pm genes plays a key role, as their presence in a cultivar's genotype allows for effective resistance against infection by specific races of the fungus.
General information about the subject — on the page Powdery mildew.
Varieties of Bread wheat mentioned in the description
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