Indole-3-Acetic Acid (IAA) – Powerful Plant Growth Regulator

Indole-3-acetic acid (IAA) is a naturally occurring plant hormone belonging to the auxin group. It is one of the most important and well-studied phytohormones, responsible for regulating various aspects of plant development, including cell elongation, root initiation, and fruit formation.

IAA is widely used in agriculture, horticulture, and plant tissue culture due to its ability to stimulate root development and enhance crop yield.

Chemical Information

• Chemical Name: Indole-3-acetic acid

• CAS Number: 87-51-4

• Molecular Formula: C10H9NO2

• Molecular Weight: 175.18 g/mol

• Appearance: White to off-white crystalline powder

• Purity: ≥99%

Key Functions of IAA in Plants

1. Stimulates Root Formation
   IAA promotes the initiation and elongation of roots, especially in cuttings and transplants, making it ideal for horticultural applications.

2. Cell Elongation and Division
   IAA helps in cell wall loosening and division, leading to the elongation of stems and leaves.

3. Fruit Development
   It enhances fruit setting and development by influencing cell division in ovary tissues.

4. Apical Dominance
   IAA controls the growth of the apical bud and suppresses the development of lateral buds, shaping overall plant architecture.

5. Vascular Differentiation
   Promotes the formation of xylem and phloem during early plant development.

Applications of Indole-3-Acetic Acid

• Agriculture: Used as a plant growth regulator to improve crop quality and productivity.

• Horticulture: Applied in root-inducing formulations for ornamental plants and flowers.

• Tissue Culture: Essential for in vitro rooting and organogenesis.

• Seed Treatment: Enhances germination rate and early seedling vigor.

• Fruit Setting: Common in crops like tomatoes, cucumbers, and strawberries to increase fruit yield.

Recommended Usage

• Rooting Hormone: 10–100 ppm

• Foliar Spray: 10–50 ppm depending on the crop

• Tissue Culture Media: 0.1–2.0 mg/L based on species

(Exact dosage should be determined through field testing or as advised by agricultural technicians.)

Packaging & Storage

• Packaging: 1 kg/aluminum foil bag; 25 kg/drum or as per customer request

• Storage: Store in a cool, dry, and well-ventilated area, away from light and moisture. Shelf life: 2 years in original packaging.

Why Choose Jiangsu Khonor Chemicals Co., Limited?

• High Purity IAA (≥99%) with strict quality control

• Professional Export Service to over 40 countries

• Flexible Packaging & OEM Options

• Prompt Delivery & Competitive Pricing

• Free Sample Available for quality testing

Conclusion

Indole-3-acetic acid (IAA) is a powerful auxin that plays a crucial role in modern agriculture and plant biotechnology. Whether you are engaged in large-scale crop production, horticulture, or plant research, IAA offers an effective and reliable solution to boost plant growth and productivity.

For inquiries, quotations, or bulk orders of high-purity IAA, please contact Jiangsu Khonor Chemicals Co., Limited — your trusted supplier of plant growth regulators from China.