Question

Which of the following statement is wrong in respect to Puccinia graminis?

• A. It is fungal parasite of wheat.
• B. It produces uredospores and teleutospores on stem and foliage.
• C. Teleutospores can re-infect wheat plants.
• D. Uredospores can infect wheat plant.

Answer 1

The correct option is C Teleutospores can re-infect wheat plants.

• Puccinia graminis tritici belongs to Basidiomycotina and causes black rust of wheat.
• Puccinia is a macrocyclic and heteroecious rust fungus. It produces uredia and telia stages on the wheat plant. The spores produced on wheat are uredospores (stage II) and teleutospores (stage III). Uredospores can re-infect wheat but teleutospores cannot do it. Instead, they give rise to basidia (stage IV).
  
• Hence Teleutospores can re-infect wheat plants is wrong in respect to Puccinia graminis.
• So, the correct answer is 'Option C'.