Spraying of conifers with which hormone hastens the maturity period and thus leading to early seed production ?

Options

A. The hormone which also causes bolting in some plants
B. The hormone which is activated during deficiency of water
C. The hormone which responsible for apical dominance
D. The hormone which prevents apical dominance is plants

Answer

To solve the question regarding which hormone, when sprayed on conifers, hastens maturity and leads to early seed production, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Question**: The question asks for a specific hormone that, when applied to conifers, accelerates their maturity period and promotes early seed production.

2. **Recall Plant Hormones**: There are several plant hormones (also known as plant growth regulators) that influence growth and development in plants. The main ones include auxins, gibberellins, cytokinins, ethylene, and abscisic acid.

3. **Identify the Role of Gibberellins**: Gibberellins (often referred to as gibberellic acid) are known to promote growth and development processes in plants. They play a crucial role in seed germination, stem elongation, flowering, and fruit development.

4. **Link Gibberellins to Maturity and Seed Production**: Gibberellins are particularly effective in hastening the maturity of plants, which in turn leads to earlier seed production. This is especially relevant in conifers, where the application of gibberellins can significantly reduce the time taken to reach maturity.

5. **Evaluate Other Options**: The other hormones mentioned (such as auxins, cytokinins, and abscisic acid) have different roles:
- Auxins are primarily involved in apical dominance and cell elongation.
- Cytokinins promote cell division and can counteract apical dominance.
- Abscisic acid is involved in stress responses, particularly in water deficiency.

6. **Conclusion**: Based on the understanding that gibberellins are responsible for hastening maturity and promoting early seed production in conifers, we conclude that the correct answer is **gibberellins**.

### Final Answer:
The hormone that hastens the maturity period and leads to early seed production in conifers is **gibberellins**.