Puccinia graminis tritici causes

Options

A. Brown rust
B. White rust
C. Yellow rust
D. Black rust

Answer

**Step-by-Step Solution:**

1. **Identify the Organism:** The question asks about Puccinia graminis tritici, which is a fungal pathogen.

2. **Understand the Type of Disease:** Puccinia graminis tritici is known to cause a specific type of disease in plants. It is important to recognize that this organism is associated with a class of diseases known as "rusts."

3. **Classify the Disease:** The disease caused by Puccinia graminis tritici is specifically referred to as "black rust." This is a significant disease affecting wheat crops.

4. **Differentiate from Other Rusts:** It is essential to differentiate black rust from other types of rusts, such as brown rust (caused by Puccinia triticina) and yellow rust (caused by Puccinia glumarum), to ensure clarity in understanding the specific disease caused by Puccinia graminis tritici.

5. **Conclusion:** Therefore, the correct answer to the question is that Puccinia graminis tritici causes black rust of wheat.

**Final Answer:** Puccinia graminis tritici causes black rust of wheat.

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