ArticlePloS one2023
Hermetic storage of okra seed maintains seed longevity under changing environment.
Article in PloS one, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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5 authors.
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Abstract
Okra seed is vulnerable to loss of germination and vigor in variable storage conditions. High seed moisture contents (SMC) accelerate seed deterioration during storage thus keeping low seed moisture contents by storing seed in hermetic bags may help to retain seed longevity. Okra seed was equilibrated to four initial moisture levels including 8,10, 12 and 14% SMC. Seed was then packed and stored in traditional storage bags (Paper, cloth, polypropylene and jute bag) and hermetic Super Bag for 12 months under ambient conditions. Seed stored in hermetic Super Bag at 8 and 10% moisture contents maintained higher germination due to low seed moisture contents. Moreover, activities of α-amylases and total soluble sugars were higher while electrical conductivity of seed leachates, malondialdehyde (MDA) and reducing sugar contents were less in the seeds stored in hermetic Super Bag at 8 and 10% SMC as compared to seed stored in traditional storage bags. Hermetic storage at 14% moisture negatively influenced the seed quality. Moisture adsorption isotherms of okra seeds were developed at constant temperature of 25°C and varying levels of relative humidity from 60 to 90%. Moisture isotherms indicated no significant increase in seed moisture contents at 60 and 70% relative humidity (RH) in hermetic bags whereas a minor increase in seed moisture at 80 and 90% RH has been observed for the seeds incubated in hermetic bags. SMC significantly increased in traditional storage bags particularly in jute bag at high RH. In conclusion, storage in hermetic bags, maintain low seed moisture and high seed quality. Okra seed storage in hermetic bags at 8 and 10% SMC maintains seed longevity under ambient storage conditions.
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