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GrainGenes Pathology Report: Powdery Mildew

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Powdery Mildew
Host Species
Triticum aestivum
Hordeum vulgare
Avena sativa
Causal Organism
Erysiphe graminis
Wheat reaction to powdery mildew
Powdery mildew, ISWYN24
Powdery mildew, Nelson96
Powdery mildew, DR147/Ae14 x Laizhou953, Zhu2004
Powdery mildew, Creso x Pedroso, Marone2013
Powdery mildew, NCAB10 x Saluda, Maxwell2010
Gene Class
Reaction to Erysiphe graminis DC.
Resistance Gene
Pm21 (Triticum)
[ Show all 59 ]
Resistant Allele
Mla3 (Hordeum)
[ Show all 113 ]
Resistant Line
Igri (barley)
Franka (barley)
H. spontaneum 1B-87
Attacks foliage and heads of wheat grown under irrigated and high rainfall conditions. White, cottony patches initially form on upper surfaces of lower leaves that can spread to all aerial portions of the plant. Patches turn dull gray or brown with age and develop dark fruiting bodies that appear as dark specks. Dense stands, heavy nitrogen fertilization, lush growth, high humidity and cool temperatures favor disease development. Persists from season-to- season on infested wheat residue.
Patches of powdery mildew...
[ Show all 13 ]
ReferenceKephart KD (1993) Winter wheat disease management Insect and plant disease management handbook.
Reference(1987) Compendium of wheat diseases.
Reference(1982) Compendium of barley diseases.