Images
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Wheat infected with Fusarium. Brown discoloration in the first internode as seen on the stem on the far left is a common characteristic of this disease. The arrow shows a pinkish area of fungal growth which is also commonly found on grains infected with Fusarium. |
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Wheat infected with the take-all fungus Gaeumannomyces graminis var. tritici. Image shows various infection severity states, (a) being the most severe and (c) being the least severe. The blackened crown area and absent roots are distinguishing characteristics of the disease. |
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Take-all symptoms on wheat and barley. (a) Wheat severely affected by the take-all fungus. (b) Wheat infected with take-all, not showing classic symptoms. (c) Barley infected with take-all slight browning of the first internode tissue. |
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Wheat infected with the snow mold fungus, Typhula spp. Arrows indicate the survival structures (sclerotia) commonly produced by fungi in this genus. Sclerotia are a diagnostic characteristic of this disease.
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