A technique of micropropagation is

Options

A. Somatic hybridisation
B. Somatic embryogenesis
C. Protoplast fusion
D. Embryo rescue

Answer

**Step-by-Step Solution:**

1. **Understanding Micropropagation**: Micropropagation is a technique used to produce a large number of plants from a small amount of plant tissue. It involves the use of tissue culture methods to grow plant cells, tissues, or organs in a controlled environment.

2. **Identifying Techniques Related to Micropropagation**: The question lists several techniques: somatic hybridization, somatic embryogenesis, protoplast fusion, and embryo rescue. We need to determine which of these is specifically a technique of micropropagation.

3. **Analyzing Each Technique**:
- **Somatic Hybridization**: This technique involves the fusion of protoplasts from two different species or varieties to create a hybrid. While it involves tissue culture, it is primarily focused on hybrid creation rather than propagation.
- **Somatic Embryogenesis**: This technique involves the formation of somatic embryos from somatic cells through in vitro culture. It is a method of micropropagation because it allows for the clonal propagation of plants.
- **Protoplast Fusion**: Similar to somatic hybridization, this technique involves fusing protoplasts but is more focused on creating hybrids rather than propagating plants.
- **Embryo Rescue**: This technique is used to save embryos that might abort early by transferring them to an in vitro culture. It is not primarily a micropropagation technique.

4. **Conclusion**: Among the techniques listed, somatic embryogenesis is the one that directly relates to micropropagation, as it involves the in vitro culture of somatic cells to produce embryos that can develop into new plants.

**Final Answer**: The technique of micropropagation is **somatic embryogenesis**.

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