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- W2095103265 abstract "Final germination percentages of 25 accessions of Brassicaceae from the UPM (Universidad Politecnica de Madrid) seed bank were evaluated after 38-40 years of storage. The seeds were preserved at temperatures between −5°C and −10°C in flame sealed vials containing dehydrated (blue) silica gel. Seed moisture content ranged between 0.3 and 3% (f.w.b) after storage. Most accessions (ten out of twelve) with high initial (before storage) germination rate (low initial dormancy) maintained these high values almost intact after storage (91-100% germination). In two accessions, seeds had developed a secondary dormancy, which was successfully overcome by scarification. A second set of 13 accessions had low initial germination rates (0-20%, i.e. high initial dormancy). In one accession, dormancy had been broken during storage (92% germination) and in nine accessions germination was significantly enhanced by GA3 and or scarification. Seed dormancy most often decreases during storage but it may also increase or remain unchanged. The consideration of these dormancy variations is very important when evaluating seed longevity in wild species. The preservation method based on silica gel and low temperature (−5°C and −10°C) has proved highly efficient at least for Brassicaceae. Vials with seeds of 12 additional accesssions had remained at room temperature during 34-39 years and those seeds showed germination percentages that were similar to those preserved in the cold room. This result suggests that temperature might not be as important as expected - at least for medium-term preservation - and supports the possibility of using ultra-dry methods." @default.
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- W2095103265 date "2007-04-01" @default.
- W2095103265 modified "2023-09-27" @default.
- W2095103265 title "High viability recorded in ultra-dry seeds of 37 species of Brassicaceae after almost 40 years of storage" @default.
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- W2095103265 doi "https://doi.org/10.15258/sst.2007.35.1.13" @default.
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