Which plant hormone is primarily responsible for apical dominance?

Auxins, such as Indole Acetic Acid (IAA), are produced in the apical bud and promote apical dominance by inhibiting the growth of lateral buds. This ensures that the main stem grows more dominantly than side branches.

• Gibberellins promote stem elongation, seed germination, and flowering.
• Cytokinins promote cell division and lateral bud growth, often counteracting apical dominance.
• Abscisic acid is primarily involved in stress responses and dormancy.