Question

Aecidial stages of Puccinia develop on

• A. Wheat leaves
• B. Wheat stem
• C. Upper surface of Barberry leaf
• D. Lower surface of Barberry leaf

Answer 1

The correct option is D Lower surface of Barberry leaf

In wheat, the primary infection starts with the germination of aecidiospore formed on the aecidial cups on the lower surface of infected barberry leaves. Aecidiospores are binucleate and on germination form primary hypha which enters the host through stomata. It forms haustoria for absorbing nutrients. This binucleate hypha or dikaryotic hyphae produces two kinds of spores uredospores and teleutospores

So, the correct answer is 'Lower surface of Barberry leaf'.