Seed storage behaviour of tropical members of the aquatic basal angiosperm genus Nymphaea L. (Nymphaeaceae)
Eighteen native species of Nymphaea (waterlilies) inhabit a range of freshwater wetlands in northern Australia, which are threatened by increased development and the potential impacts of climate change. To investigate conservation seed banking of these vulnerable species, we aimed to characterize th...
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| Format: | Journal Article |
| Language: | English |
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OXFORD UNIV PRESS
2019
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| Online Access: | http://purl.org/au-research/grants/arc/LP160100381 http://hdl.handle.net/20.500.11937/90901 |
| _version_ | 1848765455534129152 |
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| author | Dalziell, Emma Funnekotter, Bryn Mancera, Ricardo Merritt, D.J. |
| author_facet | Dalziell, Emma Funnekotter, Bryn Mancera, Ricardo Merritt, D.J. |
| author_sort | Dalziell, Emma |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | Eighteen native species of Nymphaea (waterlilies) inhabit a range of freshwater wetlands in northern Australia, which are threatened by increased development and the potential impacts of climate change. To investigate conservation seed banking of these vulnerable species, we aimed to characterize their seed storage physiology by determining (i) seed desiccation tolerance and (ii) the effects of moisture content and storage temperature on seed germination and viability. Seeds of N. immutabilis, N. lukei, N. macrosperma and N. violacea (including multiple collections of three species) were placed in experimental storage at a range of temperatures (25°C, 5°C, -20°C and -190°C) following pre-equilibration at different RHs (15%, 30%, 50%, 70% or 95%). Seeds were also experimentally aged at 60% RH and 45°C to assess comparative longevity. We found seeds of all species to be desiccation tolerant. However, the responses of seeds to experimental storage conditions were complex and variable between species and collections of the same species, and seeds of many species/collections were short-lived across many of the storage treatments. In many cases decreasing storage temperature did not increase longevity. Additional protocol development is necessary before we can have confidence that ex situ seed banking is a viable long-term germplasm conservation strategy for Nymphaea. |
| first_indexed | 2025-11-14T11:35:31Z |
| format | Journal Article |
| id | curtin-20.500.11937-90901 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| language | English |
| last_indexed | 2025-11-14T11:35:31Z |
| publishDate | 2019 |
| publisher | OXFORD UNIV PRESS |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-909012023-05-03T07:50:19Z Seed storage behaviour of tropical members of the aquatic basal angiosperm genus Nymphaea L. (Nymphaeaceae) Dalziell, Emma Funnekotter, Bryn Mancera, Ricardo Merritt, D.J. Science & Technology Life Sciences & Biomedicine Biodiversity Conservation Ecology Environmental Sciences Physiology Biodiversity & Conservation Environmental Sciences & Ecology Basal angiosperms comparative longevity cryogenic storage desiccation tolerance moisture content storage temperature LOW-TEMPERATURE STORAGE COMPARATIVE LONGEVITY HYDATELLACEAE GERMINATION PHYSIOLOGY DORMANCY WATER Basal angiosperms comparative longevity cryogenic storage desiccation tolerance moisture content storage temperature Eighteen native species of Nymphaea (waterlilies) inhabit a range of freshwater wetlands in northern Australia, which are threatened by increased development and the potential impacts of climate change. To investigate conservation seed banking of these vulnerable species, we aimed to characterize their seed storage physiology by determining (i) seed desiccation tolerance and (ii) the effects of moisture content and storage temperature on seed germination and viability. Seeds of N. immutabilis, N. lukei, N. macrosperma and N. violacea (including multiple collections of three species) were placed in experimental storage at a range of temperatures (25°C, 5°C, -20°C and -190°C) following pre-equilibration at different RHs (15%, 30%, 50%, 70% or 95%). Seeds were also experimentally aged at 60% RH and 45°C to assess comparative longevity. We found seeds of all species to be desiccation tolerant. However, the responses of seeds to experimental storage conditions were complex and variable between species and collections of the same species, and seeds of many species/collections were short-lived across many of the storage treatments. In many cases decreasing storage temperature did not increase longevity. Additional protocol development is necessary before we can have confidence that ex situ seed banking is a viable long-term germplasm conservation strategy for Nymphaea. 2019 Journal Article http://hdl.handle.net/20.500.11937/90901 10.1093/conphys/coz021 English http://purl.org/au-research/grants/arc/LP160100381 http://purl.org/au-research/grants/arc/LP140100993 http://purl.org/au-research/grants/arc/LP160101496 http://creativecommons.org/licenses/by/4.0/ OXFORD UNIV PRESS fulltext |
| spellingShingle | Science & Technology Life Sciences & Biomedicine Biodiversity Conservation Ecology Environmental Sciences Physiology Biodiversity & Conservation Environmental Sciences & Ecology Basal angiosperms comparative longevity cryogenic storage desiccation tolerance moisture content storage temperature LOW-TEMPERATURE STORAGE COMPARATIVE LONGEVITY HYDATELLACEAE GERMINATION PHYSIOLOGY DORMANCY WATER Basal angiosperms comparative longevity cryogenic storage desiccation tolerance moisture content storage temperature Dalziell, Emma Funnekotter, Bryn Mancera, Ricardo Merritt, D.J. Seed storage behaviour of tropical members of the aquatic basal angiosperm genus Nymphaea L. (Nymphaeaceae) |
| title | Seed storage behaviour of tropical members of the aquatic basal angiosperm genus Nymphaea L. (Nymphaeaceae) |
| title_full | Seed storage behaviour of tropical members of the aquatic basal angiosperm genus Nymphaea L. (Nymphaeaceae) |
| title_fullStr | Seed storage behaviour of tropical members of the aquatic basal angiosperm genus Nymphaea L. (Nymphaeaceae) |
| title_full_unstemmed | Seed storage behaviour of tropical members of the aquatic basal angiosperm genus Nymphaea L. (Nymphaeaceae) |
| title_short | Seed storage behaviour of tropical members of the aquatic basal angiosperm genus Nymphaea L. (Nymphaeaceae) |
| title_sort | seed storage behaviour of tropical members of the aquatic basal angiosperm genus nymphaea l. (nymphaeaceae) |
| topic | Science & Technology Life Sciences & Biomedicine Biodiversity Conservation Ecology Environmental Sciences Physiology Biodiversity & Conservation Environmental Sciences & Ecology Basal angiosperms comparative longevity cryogenic storage desiccation tolerance moisture content storage temperature LOW-TEMPERATURE STORAGE COMPARATIVE LONGEVITY HYDATELLACEAE GERMINATION PHYSIOLOGY DORMANCY WATER Basal angiosperms comparative longevity cryogenic storage desiccation tolerance moisture content storage temperature |
| url | http://purl.org/au-research/grants/arc/LP160100381 http://purl.org/au-research/grants/arc/LP160100381 http://purl.org/au-research/grants/arc/LP160100381 http://hdl.handle.net/20.500.11937/90901 |