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🌱 How does a seedbank preserve plants for centuries?

Dry orthodox seeds, freeze them, test germination, and regenerate stocks before vitality fades.

lessons

~10 min

to learn

🔬 Science

subject

Adults

level

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What you’ll learn

A library of living seedsExplain seedbanks as diversity backups and working genebank networks.Vaults and active banks keep crop and wild relative diversity as accessions. Black-box duplicates hedge against disaster.
Dry them, freeze them, slow life downDescribe orthodox seed drying/cold storage and limits for recalcitrant species.Dry, cold storage slows embryo aging for orthodox seeds. Recalcitrant species need other tools. Longevity is managed, not magical.
Tests, grow-outs, and the century problemShow monitoring, regeneration, and geographic redundancy as the path to century-scale conservation.Germination tests trigger grow-outs. Duplicates and protocols turn freezers into multi-generational archives maintained by people.

Questions this course answers

What is a seedbank primarily designed to preserve?

Seedbanks store accessions of seeds (and use other methods when seeds will not dry) so plant diversity remains available for breeding, research, and recovery.

Match each idea to its role in seed banking

Classic freezers work because many crop seeds can be dried and chilled; species that cannot need other conservation methods.

Why must genebanks grow some seeds out even if freezers still run?

Cold dry storage slows but does not stop aging forever. Periodic grow-outs renew the living inventory so the bank remains useful for decades to centuries.

Grounded in trusted sources

Crop Trust / Svalbard Global Seed Vault public documentation on black-box deposits and the global system
FAO Genebank Standards for Plant Genetic Resources for Food and Agriculture
USDA National Laboratory for Genetic Resources Preservation education materials
Royal Botanic Gardens, Kew — Millennium Seed Bank partnership explainers on orthodox seed storage

Every Wunder lesson is built from real, reputable sources — never invented.

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