White rust of Crucifer is caused by

Options

A. Albugo
B. Sclerospora
C. Phytophthora
D. Pythium

Answer

### Step-by-Step Solution:

1. **Identify the Disease**: The question asks about the cause of "white rust of crucifer." This is a specific plant disease affecting cruciferous plants.

2. **Understand the Options**: The options provided are:
- Albugo
- Sclerophora
- Phytophora
- Pythium

3. **Recall Relevant Information**: White rust is known to be a disease that affects various cruciferous plants, such as spinach and mustard.

4. **Determine the Causative Agent**: The specific organism responsible for white rust of crucifer is known to be "Albugo candidans."

5. **Conclude the Answer**: Based on the information, the correct answer to the question "White rust of Crucifer is caused by" is **Albugo**.

### Final Answer:
**White rust of Crucifer is caused by Albugo.**

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