The longevity of seeds strongly depends on the plant species and on the storage conditions. Storage of seeds results in aging accompanied by gradual loss of seed quality and a decrease in the germination rate. This is especially relevant when seeds need to sustain longer periods of storage or periods with unfavorable conditions such as high temperatures, high moisture, and contamination with microorganisms (Harrington 1972). Loss of germination ability is accompanied by loss of embryo viability and deterioration of storage nutrients.
Dear Singh: the well known method of seed storage requires enough drying, and tight containers to be stored under cool temp, usually 4C , if less than 4 C it will last longer because of lower respiration. Any fungi on embryos will destroy the kernel and prevent normal germination. Regards.
Yes, as long as it is free of moisture and oxygen and the temperature is at least minus 18 C :)
https://www.croptrust.org/our-work/svalbard-global-seed-vault/faq-about-the-vault/
Thanks Medhat Elsahookie correctly said that decreasing the temp. increasingly seed viability as per Harrington's thumb rule.
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