The hormones which are found to be more effective in inducing parthenocarpy are

Options

A. Cytokinis
B. Auxins
C. Ethylene
D. Ethephon

Answer

**Step-by-Step Solution:**

1. **Understand the Concept of Parthenocarpy:**
- Parthenocarpy is the process of fruit development without fertilization, leading to the formation of seedless fruits. This is an important agricultural technique for producing certain types of fruits.

2. **Identify the Plant Hormones:**
- The question provides four options: Cytokinin, Auxins, Ethylene, and Ethephon. We need to determine which of these hormones is most effective in inducing parthenocarpy.

3. **Evaluate Each Hormone:**
- **Cytokinin:** This hormone is known to promote cell division and has been shown to enhance fruit development. It is particularly effective in inducing parthenocarpy as it leads to the accumulation of other hormones like gibberellins and auxins, which also play a role in fruit development.
- **Auxins:** While auxins are involved in various growth processes, including cell elongation and fruit development, they are not as effective alone in inducing parthenocarpy compared to cytokinin.
- **Ethylene:** This hormone is primarily involved in fruit ripening and the opening of flowers. It does not induce parthenocarpy directly.
- **Ethephon:** A synthetic plant growth regulator that releases ethylene. Like ethylene, it does not directly induce parthenocarpy.

4. **Select the Correct Answer:**
- Based on the evaluation, cytokinin is the most effective hormone for inducing parthenocarpy. Therefore, the correct answer is **Cytokinin**.

5. **Conclusion:**
- The hormones found to be more effective in inducing parthenocarpy are **Cytokinins**.

---