Indol3butyric

Indol-3-butyric acid, often abbreviated as IBA, is a plant hormone that belongs to the auxin family. Auxins are a group of naturally occurring plant hormones that play a crucial role in plant growth and development. IBA is a synthetic auxin, meaning it is not typically found in plants in significant quantities, though it is structurally similar to the naturally occurring auxin indole-3-acetic acid (IAA).

The primary application of IBA in horticulture and agriculture is as a rooting hormone. When applied to cuttings of plants, IBA stimulates root formation, making it easier to propagate plants vegetatively. It is commonly used for rooting hardwood and herbaceous cuttings, as well as for grafting and tissue culture. IBA can be applied in various forms, including powders, solutions, and gels.

The mechanism by which IBA promotes rooting is complex and involves influencing cell division and elongation in the cambium and other meristematic tissues. It can also affect the transport of other plant hormones and nutrients to the site of application, further aiding in root development. While effective, the optimal concentration of IBA can vary depending on the plant species and the type of cutting. Excessive concentrations can sometimes inhibit root formation or cause other adverse effects. IBA is a widely used tool for plant propagation, contributing to the successful cultivation of many plant species.