Description
Indole-3-acetic acid (IAA) is the most abundant and naturally occurring plant hormone of the auxin class. It serves as a master regulator for nearly every stage of plant growth and development.
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- Also Known As: Heteroauxin.
- Molecular Formula: Indole-3 Acetic Acid [ C₁₀H₉NO₂. ]
- Average Molar Mass: 175.19 g/mol
- Functions:
- Cell Elongation & Division: Acts as a primary stimulant for tissue expansion and plant growth.
- Rooting: Promotes root development, lateral root branching, and adventitious root formation.
- Phototropism & Geotropism: Regulates responses to light and gravity.
- Tissue Culture: Essential for inducing root and shoot formation in vitro.
- Chemical Properties: White to off-white crystalline powder with a melting point of 164 – 168′ C
- Occurrence: Produced naturally in plants, primarily in growing tips (apical meristem), but also produced by some bacteria.
![IAA - Indole-3 Acetic Acid [ C₁₀H₉NO₂ ] - 1 Gm](https://agroshopy.in/wp-content/uploads/2026/02/IAA1.jpg)
![IAA - Indole-3 Acetic Acid [ C₁₀H₉NO₂ ] - 1 Gm - Image 2](https://agroshopy.in/wp-content/uploads/2026/02/IAA2.jpg)
![IAA - Indole-3 Acetic Acid [ C₁₀H₉NO₂ ] - 1 Gm - Image 3](https://agroshopy.in/wp-content/uploads/2026/02/IAA3.jpg)

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