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Journal article
Assessing seed desiccation responses of native trees in the Caribbean
Native trees from the Caribbean were tested for seed desiccation responses, by adapting the “100-seed test” protocol. Ninety-seven seed lots of 91 species were collected in the Dominican Republic and tested for germination immediately after collecting, and after drying and moist storage. Seed desiccation sensitivity was assessed as a continuous... -
Journal article
Lipid Thermal Fingerprints of Long-term Stored Seeds of Brassicaceae
Thermal fingerprints for seeds of 20 crop wild relatives of Brassicaceae stored for 8 to 44 years at the Plant Germplasm Bank—Universidad Politécnica de Madrid and the Royal Botanic Gardens, Kew’s Millennium Seed Bank—were generated using differential scanning calorimetry (DSC) and analyzed in relation to storage stability. Relatively poor storing... -
Journal article
Rainfall, not soil temperature, will limit the seed germination of dry forest species with climate change
Drylands are predicted to become more arid and saline due to increasing global temperature and drought. Although species from the Caatinga, a Brazilian tropical dry forest, are tolerant to these conditions, the capacity for germination to withstand extreme soil temperature and water deficit associated with climate change remains to be... -
Journal article
Comparative Seed Morphology of Tropical and Temperate Orchid Species with Different Growth Habits
Seed morphology underpins many critical biological and ecological processes, such as seed dormancy and germination, dispersal, and persistence. It is also a valuable taxonomic trait that can provide information about plant evolution and adaptations to different ecological niches. This study characterised and compared various seed morphological traits, i.e., seed and...Diantina, Surya ; McGill, Craig ; Millner, James ; Nadarajan, Jayanthi ; Pritchard, Hugh W. …
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Journal article
Lack of adequate seed supply is a major bottleneck for effective ecosystem restoration in Chile: friendly amendment to Bannister et al. (2018)
We argue that the need for a quality seed supply chain is a major bottleneck for the restoration of Chile's native ecosystems, thus supplementing the list of bottlenecks proposed by Bannister et al. in 2018. Specifically, there is a need for defining seed transfer zones, developing standards and capacities for...León‐Lobos, Pedro ; Bustamante‐Sánchez, Marcela A. ; Nelson, Cara R. ; Alarcón, Diego ; Hasbún, Rodrigo …
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Journal article
Storage of orchid pollinia with varying lipid thermal fingerprints
Orchid pollinia have the potential to make a valuable contribution to current techniques of germplasm storage and assisted reproduction, yet information regarding their preservation and their ability to remain viable over time is currently limited. Dactylorhiza fuchsii and Disa uniflora were used as models for investigating potential techniques for storing...Custodio, Ceci Castilho ; Machado-Neto, Nelson B. ; Singer, Rodrigo B. ; Pritchard, Hugh W. ; Seaton, Philip T. …
Orchidaceae, Conservation , Germplasm, and Pollen germination
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Journal article
The negative effect of a vertically-transmitted fungal endophyte on seed longevity is stronger than that of ozone transgenerational effect
Seed morphology underpins many critical biological and ecological processes, such as seed dormancy and germination, dispersal, and persistence. It is also a valuable taxonomic trait that can provide information about plant evolution and adaptations to different ecological niches. This study characterised and compared various seed morphological traits, i.e., seed and...Dantas, Barbara F. ; Moura, Magna S. B. ; Gundel, Pedro E. ; McGill, Craig ; Seal, Charlotte E. …
Maternal effect, Lolium multiflorum, Italian ryegrass, and Epichloë occultans
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Journal article
Dry architecture: towards the understanding of the variation of longevity in desiccation-tolerant germplasm
Desiccation-tolerant (DT) plant germplasm (i.e. seeds, pollen and spores) survive drying to low moisture contents, when cytoplasm solidifies, forming a glass, and chemical reactions are slowed. DT germplasm may survive for long periods in this state, though inter-specific and intra-specific variation occurs and is not currently explained. Such variability has...Ballesteros, Daniel ; Pritchard, Hugh W. ; Walters, Christina
solidified cytoplasm, seeds, oxidative stress, photosynthetic stress, spores, and lipid crystallization
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Journal article
Unlocking plant resources to support food security and promote sustainable agriculture.
Societal Impact Statement Biodiversity is essential to food security and nutrition locally and globally. By reviewing the global state of edible plants and highlighting key neglected and underutilized species (NUS), we attempt to unlock plant food resources and explore the role of fungi, which along with the wealth of traditional... -
Journal article
Differential Interpretation of Mountain Temperatures by Endospermic Seeds of Three Endemic Species Impacts the Timing of In Situ Germination
Predicting seed germination in the field is a critical part of anticipating the impact of climate change on the timing of wild species regeneration. We combined thermal time and soil heat sum models of seed germination for three endemic Mediterranean mountain species with endospermic seeds and morphophysiological dormancy: Aquilegia barbaricina,...