Black rust of wheat is caused by

Puccinia

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Albugo

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Ustilago

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Cystopus

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Solution

The correct option is A Puccinia
Black rust of wheat is caused by Puccinia graminis tritici, a fungus which belongs to Basidiomycota. It is an internal obligate parasite. The uredial pustules occur on stem, leaf sheaths and leaves. The pustules of black rust are reddish brown in color and elongated in shape. By the time crop matures, black, elongated telial pustules are formed

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