Orthodox seeds can be preserved for long periods at a temperature of

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Orthodox seeds survive to dry or freezing during ex situ conservation, as opposed to recalcitrant seeds. Orthodox seeds which can be partially dried (up to 5% moisture) and can be stored indefinitely at low temperature (–10° to –20°C) e.g., cereals. In a seed, the embryo is present in a dormant state. The moisture contents of seeds are kept low (5-15%) and they are stored at low temperature (–10 o C to –20 o C) with a supply of little oxygen.

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