Plant Pathology Department, University of Kentucky

Diagnostic Training Images

Wheat

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Last Modified: 02-Jun-2008
Copyright © 2004, University of Kentucky, College of Agriculture, Department of Plant Pathology

Plant: Wheat (Triticum aestivum) (Graminaceae) Back to List
Disease/Disorder: Stripe rust
Causal agent: Puccinia striiformis f. sp. tritici (fungus)
Signs: Yellow rust spores.
Symptoms: Pustules usually arranged in streaks or stripes but when severe can cover the entire leaf.
Total image number: 4

Plant: Wheat (Triticum aestivum) (Graminaceae) Back to List
Disease/Disorder: Sharp eyespot
Causal agent: Rhizoctonia cerealis (fungus)
Signs:
Symptoms: A lens-shaped lesion on the lower stem near the soil. This is seen after removing the leaf sheaths from around the stem. See the Compendium of Wheat Diseases, 2nd edition by APS Press, page 50.
Total image number: 4

Plant: Wheat (Triticum aestivum) (Graminaceae) Back to List
Disease/Disorder: Tan spot
Causal agent: Pyrenophora tritici-repentis (fungus)
Signs: Conidia and conidiophores of the anamorph fungus Drechslera tritici-repentis.
Symptoms: brown spots with a yellow halo on leaves.
Total image number: 6

Plant: Wheat (Triticum aestivum) (Graminaceae) Back to List
Disease/Disorder: Speckled leaf blotch
Causal agent: Septoria tritici (fungus)
Signs: Dark pycnidia and hyline conidia.
Symptoms: brown spot with a yellow halo and small, dark specks in the center on leaves.
Total image number: 8

Plant: Wheat (Triticum aestivum) (Graminaceae) Back to List
Disease/Disorder: Stagonospora leaf blotch
Causal agent: Stagonospora nodorum (fungus)
Signs: light brown pycnidia with spores sometimes exuded in a pink brown mass
Symptoms: brown, oval spot with yellow halo on leaves.
Total image number: 14