Pusa Swarnim a variety of Brassica is resistant to

Options

A. Bacterial blight
B. White rust
C. Curl and black rot
D. Mosaic virus.

Answer

### Step-by-Step Solution:

1. **Identify the Variety**: The question mentions "Pusa Swarnim," which is a specific variety of Brassica.

2. **Understand Resistance**: The question asks what Pusa Swarnim is resistant to. Resistance refers to the ability of a plant variety to withstand certain diseases or pests.

3. **List Possible Diseases**: According to the video transcript, Pusa Swarnim is resistant to several diseases, including:
- White rust
- Bacterial blight
- Curl
- Black rot
- Mosaic virus

4. **Evaluate Each Disease**:
- **White Rust**: Caused by the oomycete Albugo candida, and Pusa Swarnim is confirmed to be resistant to this disease.
- **Bacterial Blight**: Caused by Pseudomonas and Xanthomonas species. The transcript indicates that Pusa Swarnim is not resistant to this.
- **Curl**: Caused by Xanthomonas campestris. The transcript indicates that Pusa Swarnim is not resistant to this.
- **Black Rot**: Also caused by Xanthomonas campestris. The transcript indicates that Pusa Swarnim is not resistant to this.
- **Mosaic Virus**: This virus causes mosaic diseases, and Pusa Swarnim is also not resistant to this.

5. **Conclusion**: Based on the evaluation, Pusa Swarnim is resistant specifically to **white rust**.

### Final Answer:
Pusa Swarnim, a variety of Brassica, is resistant to **white rust**.