Features of Seed Storage Structures:
1. Temperature Control:
- To maintain seed viability and prevent premature deterioration, controlled temperatures are essential.
- Temperatures are typically maintained within a narrow range, usually between 2-10°C for long-term storage and 15-20°C for short-term storage.
- Insulated walls, cooling systems (e.g., air conditioning, refrigeration), and vapor barriers help regulate temperatures.
2. Humidity Control:
- Relative humidity is also crucial for seed storage. Too high humidity can lead to moisture absorption and mold growth, while too low humidity can cause desiccating damage.
- Ideal relative humidity ranges between 15-30%.
- Moisture barriers (e.g., impermeable liners, desiccants) and ventilation systems help control humidity.
3. Airtightness:
- To prevent moisture exchange and contamination, seed storage structures should be airtight.
- Hermetically sealed containers, such as jars or metal boxes with gasketed lids, are commonly used.
- Oxygen-absorbing materials may also be included to reduce oxidation and spoilage.
4. Darkness:
- Light can damage seed DNA and shorten viability.
- Structures should be opaque or shielded from light sources to minimize exposure.
- Blackouts, window coverings, or UV-blocking films are used for this purpose.
5. Pest Control:
- Pests (e.g., rodents, insects) can infest seeds and cause significant damage.
- Insect-proof and rodent-proof materials are used to construct storage structures.
- Regular monitoring and pest control measures (e.g., fumigation, trapping) are implemented.
6. Monitoring Equipment:
- To ensure optimal conditions, seed storage structures are equipped with monitoring devices:
- Temperature sensors
- Humidity gauges
- Oxygen sensors
- Regular data collection and analysis allow for timely adjustments to maintain ideal storage conditions.
7. Security:
- Seed collections are often valuable and require protection from unauthorized access.
- Storage structures are secured with locks, alarms, and surveillance systems.
- Access is typically restricted to authorized personnel.
8. Long-Term Storage Capacity:
- Seed storage structures are designed to facilitate long-term preservation of seed viability.
- They are constructed using durable materials (e.g., concrete, metal) and engineered to withstand environmental fluctuations.
9. Easy Accessibility:
- For research, conservation, and breeding purposes, seeds need to be accessible when needed.
- Storage structures are designed with retrieval systems that allow for efficient access.