The plant hormone that primarily promotes growth is auxin.
Auxin plays a crucial role in various aspects of plant growth, including:
- Cell elongation: Auxin stimulates the elongation of cells in stems and roots, leading to overall growth.
- Root development: Auxin promotes the formation of roots, both from seeds and cuttings.
- Fruit development: Auxin helps in the development and maturation of fruits.
- Apical dominance: Auxin produced at the tip of the plant (apical bud) inhibits the growth of lateral buds, resulting in a dominant central stem.
While auxin is the primary growth-promoting hormone, other plant hormones also contribute to growth in specific ways:
- Gibberellins: These hormones promote stem elongation, seed germination, and fruit development.
- Cytokinins: These hormones stimulate cell division and promote lateral bud growth.
Understanding the roles of these hormones is essential for optimizing plant growth and development in various agricultural and horticultural practices.
