Abstract
Some species of the Lauraceae family produce seeds that are generally sensitive to desiccation, which makes them difficult to store. The objective of this study was to characterize changes in seed quality of C. aschersoniana from two lots, as well in the physiological and cellular aspects during 12 months of storage. Seeds were stored with their original moisture content (MC) or after pre-drying to 35% MC in a cold chamber (5 °C) at a relative humidity of 40%. Seeds were sampled and tested at time 0, 3, 6 and 12 months of storage regarding to moisture content, germination and ultrastructural features. The seeds were dispersed with dormancy that was overcame by the cold storage condition and the reserves in undried seeds were partly consumed during storage. Both undried and pre-dried seeds remained viable for at least 12 months.
Highlights
AND OBJECTIVESIn order to have an efficient storage, the seed moisture content must be low
Some species of the Lauraceae family produce seeds that are generally sensitive to desiccation, which makes them difficult to store
The moisture content of the seeds remained stable over 12 months of storage, without significant variation (p < 0.05)
Summary
AND OBJECTIVESIn order to have an efficient storage, the seed moisture content must be low. Storage alternatives that have been proposed for these seeds include the removal of free water, a procedure that helps to maintain seed viability (Walters, 2000; Bonjovani & Barbedo, 2008), by lowering the metabolic rates, as well as prevent infestations by microorganisms (Lima et al, 2018). In some cases, this partial drying may improve the seed quality by provoking a moderate stress condition that generates a certain positive response in the seed (Walters, 2000). The objective of this study was to characterize changes in seed quality of C. aschersoniana, as well in the physiological and cellular aspects during 12 months of storage
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