Auxins

Auxins are a class of plant hormones that regulate growth and development in cannabis, controlling cell elongation, root formation, and apical dominance. In cannabis breeding and cultivation, auxin expression influences internode spacing, branch architecture, and overall plant morphology. These naturally occurring compounds work alongside other hormone systems to shape phenotypic traits that breeders select for across different genetic lines. Understanding auxin dynamics has become increasingly relevant in genetic preservation and in developing cultivars with specific structural characteristics. Lineage records frequently report correlations between auxin-responsive genetics and plant structure phenotypes observed across indica, sativa, and hybrid families.

Breeders working in structural genetics often monitor auxin-related traits to select for desired plant architectures—from compact, bushy phenotypes to taller, more spaced cultivars. Auxin sensitivity and hormone metabolism can be inherited traits, making them useful markers in long-term breeding programs focused on consistent plant form and yield structure.