IAA Indoleacetic acid and Brassinolide rooting and growth-promoting dual-action

Indoleacetic acid (IAA) and brassinolide (BR) work together to synergistically promote plant growth and enhance stress tolerance.

1. Promote Root Development
The combined effect of the two significantly enhances root vitality, promotes lateral root and root hair formation, and improves nutrient absorption capacity.

2. Enhance Photosynthesis
Brassinolide promotes leaf photosynthesis, while indoleacetic acid optimizes the transport and distribution of photosynthetic products, collectively increasing photosynthetic efficiency.

3. Enhance Stress Tolerance
Combined use can induce the production of disease-resistant proteins (such as peroxidase and chitinase) and promote the synthesis of cytokinins and vitamin E, effectively resisting stresses such as drought and low temperature.

4. Regulate Growth Balance
Indoleacetic acid regulates stem and leaf growth by promoting cell elongation, while brassinolide balances apical dominance and prevents excessive growth. The two synergistically optimize plant architecture.