02016naa a2200253 a 450000100080000000500110000800800410001902400460006010000190010624501820012526000090030752012000031665000180151665000170153465300170155165300160156865300170158465300200160165300180162165300140163970000190165370000220167277300680169421816022025-12-08       2025    bl uuuu     u00u1 u    #d7 ahttps://doi.org/10.55034/smrv6n2-0232DOI1 aSALOMAO, A. N.  aCryopreservation of mahogany seeds (Swietenia macrophylla King.) – Meliaceae, with different moisture contents from individuals cultivated in Brasília.h[electronic resource]  c2025  aThe success of cryopreservation depends on the interaction between seeds’ chemical composition and moisture content, as well as the freezing and thawing rates, among others. In this study, the effect of desiccation, hydration, rapid freezing (-263 °C.min-1) in liquid nitrogen (LN) and slow thawing (5 °C.min-1) in mahogany seeds from individuals grown in Brasilia – Federal District has been evaluated. Seeds with 4.3% moisture content (m.c.) were dehydrated to 3.1% and 2.6% m.c. and hydrated to 9.5% m.c. The germination percentages are 96% (4.3%, 3.1%), 98% (2.6%) and 97% (9.5%), after drying and hydration, respectively. As seeds with low m.c. maintained high germination percentages of 99% (4.3%), 96% (3.1%) and 100% (2.6%), after exposure to NL. Seeds with 9.5% m.c. showed a significant loss of germinability from 97% to 46%, after NL exposure. These results reinforce the need to adjust the m.c. in cryopreservation protocols for mahogany seeds, since these seeds, even though orthodox, they are lipid, therefore, tolerant to desiccation and are sensitive to freezing in NL. For mahogany seeds with m.c. ≤ 4.3%, cryopreservation is a viable alternative for their conservation.  aConservação  aHidratação  aConservation  aDesiccation  aDessecação  aGerminabilidade  aGerminability  aHydration1 aGIMENES, M. A.1 aJOSE, S. C. B. R.  tStudies in Multidisciplinary Reviewgv. 6, n. 2, p. 1-19, 2025.