Tissue Distribution

Tissue distribution in cannabis refers to how cannabinoids, terpenes, and other secondary metabolites accumulate across different plant tissues—flowers, leaves, stems, and roots. Understanding this spatial organization is fundamental to breeding programs seeking to concentrate desirable compounds in harvestable material. Distribution patterns are genetically influenced and vary significantly between cultivars and strains. Some lineages naturally concentrate cannabinoids in trichome-dense flowers, while others show more dispersed profiles across the plant. Breeders analyze tissue distribution to optimize extraction efficiency and phenotype selection.

Breeders use tissue distribution data to identify and select for cultivars that concentrate target compounds (THC, CBD, specific terpenes) in flowers rather than leaf or stem tissue, improving yield and product quality. Selective breeding for concentrated trichomal expression and favorable distribution patterns has become a standard evaluation metric in modern cannabis breeding programs.