# Germplasm

> Germplasm is living genetic material (seeds, pollen, tissue or plants) kept for breeding, research or conservation, representing the genetic diversity of a crop.

- Canonical: https://genetixbay.com/knowledge/glossary/germplasm.html
- Also written: germ plasm, genetic resources, plant genetic resources, breeding material, genetic material
- Glossary category: Genetics and breeding · Evidence: Established
- Status: Draft: awaiting expert review · Updated: 2026-10-31
- Licence: CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0/), attribute "GenetixBay cannabis glossary"

Germplasm is the living genetic material of a crop held for future use: seed, pollen, [tissue cultures](https://genetixbay.com/knowledge/glossary/tissue-culture.md), cuttings and whole plants. The term covers both a single sample and the collective diversity breeders can draw on.

## In practice

Germplasm conservation keeps options open. A disease resistance, a rare [terpene profile](https://genetixbay.com/knowledge/glossary/terpene-profile.md) or an early-finishing trait may sit in an old [landrace](https://genetixbay.com/knowledge/glossary/landrace.md) or an obscure [heirloom](https://genetixbay.com/knowledge/glossary/heirloom.md) for decades before a breeder needs it. Losing that material loses the option.

Cannabis germplasm has been poorly conserved compared with other crops, partly because of prohibition. Much of it lives in private collections: [clone-only cuts](https://genetixbay.com/knowledge/glossary/clone-only.md), heirloom seed, individual breeders' stock. Each storage form has limits. Seed lasts years if dry and cold; pollen can be frozen; clones need constant upkeep; tissue culture slows growth but needs lab skill.

Preservation and documentation of germplasm is why GenetixBay exists.

## Don't confuse with

- **Gene pool**: the total set of alleles in a population or species; germplasm is the physical material that carries it.
- **Seed bank (shop)**: a company selling seed, not a conservation collection; "[gene](https://genetixbay.com/knowledge/glossary/gene.md) bank" is the conservation term.

## Related terms

[Gene pool](https://genetixbay.com/knowledge/glossary/gene-pool.md), [Accession](https://genetixbay.com/knowledge/glossary/accession.md), [Landrace](https://genetixbay.com/knowledge/glossary/landrace.md), [Tissue culture](https://genetixbay.com/knowledge/glossary/tissue-culture.md), [Genetic bottleneck](https://genetixbay.com/knowledge/glossary/genetic-bottleneck.md)

## Read more

- [Patents and the gene pool: who can own a cannabis plant?](https://genetixbay.com/knowledge/genetics-history/patents-and-the-gene-pool.md)
- [Clone-only cuts and how to preserve them](https://genetixbay.com/knowledge/breeding/clone-only-preservation.md)

## Sources

1. Acquaah G. 2012. Principles of Plant Genetics and Breeding, 2nd edition. Wiley-Blackwell. https://doi.org/10.1002/9781118313718
2. Clarke RC, Merlin MD. 2013. Cannabis: Evolution and Ethnobotany. University of California Press. https://doi.org/10.1525/9780520954571