Callus Culture

Callus culture refers to the laboratory propagation of plant tissue through undifferentiated cell mass development, a technique applied in cannabis breeding and preservation research. Breeders use callus induction to regenerate plants from isolated tissues, enabling rapid multiplication of elite genotypes and long-term genetic storage. This method involves culturing excised plant material—typically leaf, stem, or root tissue—on nutrient-rich media under controlled conditions to stimulate dedifferentiation. Callus tissue can then be induced to differentiate into shoots and roots through hormone manipulation, producing viable plantlets genetically identical to the parent. While callus culture remains primarily a research and institutional tool rather than commercial production, it offers breeders pathways for genetic preservation, disease elimination, and propagation of difficult-to-clone

Callus culture enables breeders to preserve elite genetics indefinitely, recover lines from contamination or loss, and bypass seed production constraints. The technique is particularly valuable for maintaining heterozygous or unstable phenotypes that would segregate unpredictably in sexual reproduction.