Undesirable cross pollination can be prevented during hybridization by

Options

A. Bagging
B. Emasculation
C. Using male sterile varieties as female parents
D. Anther culture & Colchicine treatment

Answer

To prevent undesirable cross-pollination during hybridization, the following steps can be taken:

### Step-by-Step Solution:

1. **Understanding Hybridization**: Hybridization is the process of crossing two different plants to produce a hybrid with desirable traits. This involves the transfer of pollen from one plant to another.

2. **Identifying the Problem**: Undesirable cross-pollination can lead to the introduction of unwanted traits in the hybrid, which can affect the quality and characteristics of the resulting plants.

3. **Using Bagging Technique**:
- **Bagging** involves covering the flowers of the plant that is to be hybridized with a protective bag before they open. This prevents any unwanted pollen from other plants from reaching the stigma of the flower.
- The bag is usually made of a breathable material that allows air to circulate but prevents pollen from entering.

4. **Emasculation**:
- This is the process of removing the male parts (anthers) of the flower to prevent self-pollination or cross-pollination from other plants.
- After emasculation, the flower can be bagged to ensure that only the desired pollen is used for fertilization.

5. **Using Male Sterilized Varieties**:
- In some cases, male sterilized varieties can be used as female parents to prevent cross-pollination. However, this is not always feasible for all plants.

6. **Conclusion**: The most effective method to prevent undesirable cross-pollination during hybridization is **bagging** the emasculated flowers.

### Final Answer:
Undesirable cross-pollination can be prevented during hybridization by **bagging** the emasculated flowers.

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