The sequence of spore production in Puccinia (wheat rust) is

Aeciospore, Uredospore, Telispore, Basidiospore, Pycniospore

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Basidiospore, Aeciospore, Pycniospore, Telispore

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Telispore, Aeciospore, Uredospore, Basidiospore

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Telispore, Basidiospore, Aeciospore, Pycniospore

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Solution

The correct option is A Aeciospore, Uredospore, Telispore, Basidiospore, Pycniospore
Puccinia graminis is macrocyclic, producing all five spore stages: basidiospores, pycniospores (spermatia), aeciospores, urediniospores (uredospores), and teliospores.
Although stem rust is caused by a single species of fungus,
Puccinia graminis, there is considerable genetic variation within the species.

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