Through which technique more female plants can be proudced in Papaya

Options

A. Genetic engineering
B. Polyploid breeding
C. Spraying ethephon
D. Tissue culture.

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks for a technique that can be used to produce more female plants in papaya.

2. **Evaluating the Options**:
- **A. Genetic Engineering**: This technique involves manipulating genes and vectors to introduce specific traits. However, it does not guarantee the production of only female plants, as it can also result in male plants.
- **B. Polyploid Engineering**: This involves the manipulation of the number of chromosome sets in an organism. It does not specifically lead to the formation of female plants in papaya.
- **C. Spraying Ethylene**: Ethylene is a plant hormone that can influence various growth processes, but it does not specifically lead to the production of female plants.
- **D. Tissue Culture**: This technique involves growing new plants from cells or tissues. By using female explants (tissues from female plants), it is possible to produce clones that are genetically identical to the female parent, thereby ensuring the production of female plants.

3. **Conclusion**: After evaluating all the options, the most effective technique for producing more female plants in papaya is **D. Tissue Culture**.

### Final Answer:
**D. Tissue Culture**

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