In modern agriculture and horticulture, plant growth regulators have become essential tools to boost crop yield, improve plant quality, and enhance propagation efficiency. Among all natural plant hormones, Indole‑3‑Acetic Acid (IAA) stands out as the most important naturally occurring auxin. As a high‑effective plant growth regulator with a purity of 98% TC, IAA is widely adopted in farming, gardening, tissue culture, and plant research. This blog will introduce what IAA is, its core functions, key applications, physical features, and proper storage methods.
What Is Indole‑3‑Acetic Acid (IAA)?
Indole‑3‑acetic acid, commonly abbreviated as IAA, also known as heteroauxin or 3‑Indoleacetic Acid, is the primary natural auxin inside plants. With the CAS number 87‑51‑4, molecular formula C₁₀H₉NO₂ and molecular weight 175.18 g/mol, 98% TC IAA is a white to off‑white crystalline powder.
It is slightly soluble in water but soluble in various organic solvents, with a melting point between 165°C and 169°C. As a natural hormone extracted or synthetically produced, IAA directly participates in regulating the whole growth cycle of plants, from seed germination to root development, flowering and fruiting.
Core Functions of Indole‑3‑Acetic Acid (IAA)
IAA controls multiple key physiological activities of plants, bringing remarkable benefits for agricultural production:
Promotes cell elongation and division, accelerating plant growth and making crops stronger.
Stimulates root initiation and root growth, greatly improving rooting rate of cuttings and seed survival rate.
Enhances fruit setting and fruit expansion, reducing flower and fruit drop to increase yield.
Regulates apical dominance, helping form ideal plant shapes for better ventilation and light transmission.
Adjusts phototropism and geotropism, guiding plants to grow towards light and stable ground.
Improves overall plant stress resistance and growth performance under complex growing conditions.
Wide Applications of 98% TC IAA in Modern Agriculture
Due to its stable effect and high activity, 98% TC IAA is widely used in multiple fields:
Agricultural Planting: Used for seed soaking and root dipping to boost germination, root development and crop yield for grains, vegetables and fruits.
Horticulture & Ornamental Plants: Perfect for flower cuttings, bonsai cultivation and nursery stock propagation to increase rooting success.
Plant Tissue Culture: A necessary hormone in lab‑scale tissue culture to induce callus formation and seedling differentiation.
Cutting Propagation: Widely applied in woody and herbaceous plant cuttings, shortening rooting time and raising survival rate.
Scientific Research: Essential reagent for plant physiology studies, plant growth experiments and academic lab tests.
Storage Tips for Indole‑3‑Acetic Acid (IAA)
To keep its high activity and avoid degradation, proper storage is vital:Store IAA in a cool, dry and well‑ventilated place, strictly avoiding direct sunlight. IAA is sensitive to light and acidic environments; long‑term exposure to light will cause decomposition and reduce efficacy. Please keep the product tightly sealed to prevent moisture and impurity contamination.
Conclusion
As a natural and efficient plant growth regulator, 98% TC Indole‑3‑Acetic Acid (IAA) plays an irreplaceable role in modern agriculture, horticulture and plant research. It not only improves rooting, growth and fruiting performance of plants but also helps farmers achieve higher yields with lower costs. With the development of precision agriculture, IAA will have broader application prospects in global crop planting and plant propagation industries.
If you need to purchase high‑quality Indole‑3‑Acetic Acid (IAA), please contact us for more details.
