Which of the following type of culture is used in some interspecific crosses, where endosperm of developing hybrid seed degenerates very early?

Options

A. Meristem culture
B. Shoot tip culture
C. Embryo culture
D. Anther culture

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks about the type of culture used in interspecific crosses where the endosperm of the developing hybrid seed degenerates early.

2. **Identifying the Options**: The options provided are:
- Meristem culture
- Shoot tip culture
- Embryo culture
- Anthraculture

3. **Defining the Relevant Terms**:
- **Meristem Culture**: This involves the culture of the meristematic tissue of plants, which is used for clonal propagation.
- **Shoot Tip Culture**: This is a technique where the shoot tips of plants are cultured to produce new plants.
- **Embryo Culture**: This technique involves the culture of embryos, particularly those that are immature or not viable in the seed, to promote their growth into viable plants.
- **Anthraculture**: This term is not commonly used in plant tissue culture and may refer to a specific type of culture related to fungi or diseases.

4. **Analyzing the Context**: The question specifies that the endosperm of the hybrid seed degenerates early. In many interspecific crosses, the seeds produced may not be viable due to the incompatibility of the parent species. In such cases, embryo culture is utilized to rescue the embryos before they degenerate.

5. **Conclusion**: Based on the definitions and the context provided, the correct answer is **Embryo Culture**. This method is specifically designed to nurture immature embryos that would otherwise not survive, making it suitable for interspecific crosses where the endosperm degenerates.

**Final Answer**: Embryo culture is the type of culture used in some interspecific crosses where the endosperm of developing hybrid seeds degenerates very early.

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