Which of the following is developed through mutational breeding ?

Options

A. Resistance to white rust in Brassica
B. Resistance to the yellow mosaic virus in bhindi .
C. Resistance to powdery mildew in Abelmoschus.
D. Resistance to leaf curl in chilli.

Answer

To solve the question regarding which of the following is developed through mutational breeding, we can follow these steps:

### Step-by-Step Solution:

1. **Understand Mutational Breeding**:
- Mutational breeding involves inducing mutations in the genetic material (DNA) of plants to create desirable traits. This can be achieved through various methods, including exposure to radiation or chemicals.

2. **Identify the Purpose of Mutational Breeding**:
- The primary goal is to develop improved varieties of crops that exhibit desirable characteristics such as disease resistance, increased yield, or enhanced nutritional content.

3. **Analyze the Given Options**:
- The options provided include:
- A) Resistance to white rust in Brassica
- B) Resistance to yellow mosaic virus in okra (Abelmosus esculentus)
- C) Resistance to powdery mildew
- D) Resistance to leaf curl in chillies

4. **Evaluate Each Option**:
- A) Resistance to white rust in Brassica: This is typically achieved through conventional breeding methods.
- B) Resistance to yellow mosaic virus in okra: This trait has been specifically developed through mutational breeding by exposing the plant to radiation, leading to changes in its DNA that confer resistance.
- C) Resistance to powdery mildew: Generally developed through traditional breeding techniques.
- D) Resistance to leaf curl in chillies: Also typically achieved through conventional breeding methods.

5. **Select the Correct Answer**:
- Based on the analysis, option B (Resistance to yellow mosaic virus in okra) is the only trait developed through mutational breeding.

### Final Answer:
- The correct answer is **B) Resistance to yellow mosaic virus in okra**.

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