Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
225
datasets available to search
ShareScore release 0.9.0
Dataset results
225 results for “seed germination”
Data from: Competition, seed dispersal, and hunting: what drives germination and seedling survival in an Afrotropical forest?
Disentangling the contributions of different processes that influence plant recruitment, such as competition and seed dispersal, is important given the increased human-mediated changes in tropical forest ecosystems. Previous studies have shown that seedling communities in an Afro-tropical rainforest in Southeastern Nigeria are strongly affected by the loss of important seed dispersing primates, including Cross River gorillas (Gorilla gorilla diehli), chimpanzee (Pan troglodytes elioti), and drill (Mandrillus leucophaeus). Here we study how germination and survival of tree seedlings are affected by competition and reduced seed-dispersal in three contiguous forest reserves, in Southeastern Nigeria, with similar mature tree species composition and structure. We use an experimental design aimed at manipulating the effect of competition among seedlings in three protected and three hunted sites within the reserves. We use a total of sixty 5×5 m plots of three types: plots cleared of all seedlings, plots selectively cleared of all primate-dispersed seedlings and control plots. All seedlings were identified, measured, assigned to dispersal mode, and tagged, and after one year we evaluated survival, mortality and new recruits. We found that in hunted sites germination of abiotically dispersed species was over four times higher in cleared plots compared to control plots, whereas germination of primate dispersed species was the same, which indicated that dispersal limitation was the dominant force in seedling recruitment in hunted sites. This was supported by the fact that the germination of all dispersal modes in the selectively cleared plots in protected sites was similar to the control plots in the same sites, but germination of abiotically dispersed species was significantly lower than in cleared plots in hunted sites. Competition among seedlings was mostly evident from the fact that 75% more seedlings of primate dispersed species germinated in cleared compared to control plots in protected sites. We conclude that inter-seedling competition may be irrelevant to seedling recruitment in hunted sites, where dispersal limitation appears to be a much stronger force shaping the seedling plant community, and thus hunting indirectly reverses the importance of competition and dispersal limitation in structuring seedling communities.
Data from: Interactions between seed traits and digestive processes determine the germinability of bird-dispersed seeds
Waterbirds disperse a wide range of plant seeds via their guts, promoting biotic connectivity between isolated habitat patches. However, the intensity of digestive forces encountered by seeds, and therefore their potential to survive digestive tract passage, varies within and between waterbird species. Here, we investigate under controlled conditions how the interaction between seed traits and digestive strategies affect the germinability of seeds following waterbird-mediated dispersal. We exposed seeds of 30 wetland plant species to the main digestive processes in the dabbling duck digestive system: mechanical, chemical and intestinal digestion. These were simulated by 1) a pressure test and scarification treatment, 2) incubation in simulated gastric juice, and 3) incubation in intestinal contents of culled mallards (Anas platyrhynchos). We evaluated their separate and combined effects on seed germination, and identified the role of seed size and seed coat traits in resisting the digestive forces. Seeds were generally resistant to separate digestive processes, but highly sensitive to a combination. Resistance to mechanical break-down was reduced by up to 80% by chemical pre-treatment, especially for seeds with permeable coats. Scarified seeds were 12–17% more vulnerable to chemical and intestinal digestive processes than undamaged seeds. Large seeds and seeds with thin, permeable coats were particularly sensitive to chemical and intestinal digestion. These results indicate that efficient digestion of seeds requires multiple digestive processes. The gizzard, responsible for mechanical digestion, plays a key role in seed survival. Omnivorous birds, which have relatively light gizzards compared to pure herbivores or granivores, are thus most likely to disperse seeds successfully. Regardless of digestive strategy, small seeds with tough seed coats are most resistant to digestion and may be adapted to endozoochorous dispersal by waterbirds.
Data from: Hydrology, shore morphology and species traits affect seed dispersal, germination and community assembly in shoreline plant communities
1.Seed dispersal and germination are two primary processes influencing plant community assembly. On freshwater shores, water levels regulate both processes. However, it is still unclear how water levels, shore morphology and species traits interactively affect seed dispersal and germination, and how these interactions determine plant community assembly. We hypothesize that a drawdown water regime enhances seed establishment compared to a year-round stable water level, that this increases species richness and diversity, and that this is modulated by species traits and shore morphology. 2.Germination of 20 wetland plant species with different dispersal capacities (floating capacity expressed as seed floatation half-time) and soil moisture preferences for germination (Ellenberg F) was tested on artificial shores in 24 outdoor ponds in 2 complementary experiments over 8 weeks. The "dispersal experiment" tested the effect of water regime on recruitment of hydrochorously dispersing seeds. The "seed bank experiment" tested the effect of water regime on germination from a sown seed bank, on steep and gradual shores. 3.In the dispersal experiment, the drawdown regime increased recruitment and species richness. Longer floating species colonised a larger shoreline section. Soil moisture preference for germination did not determine colonisation patterns. 4.In the seed bank experiment, the drawdown regime increased the number of seedlings on gradual sloping shores, but not on steep shores. The number of germinating seedlings corresponded to the area subjected to the drawdown regime in both shore types. Species richness was not affected by water regime or shore morphology, and species traits did not determine shoreline colonisation. Most seeds germinated in moist soil conditions for all species. 5.Synthesis. A spring drawdown instead of stable water regime stimulates establishment of hydrochorously dispersing seeds in temperate wetlands, leading to higher species richness and diversity. Germination from the seed bank is more affected by water regime and shore surface than by the tested species traits. Species traits, water levels and shore morphology together determine wetland plant community assembly, with dispersal as the main driver of seedling community diversity. Water level regulations and shore morphology can be used to influence plant communities in wetland restoration.
Data from: Effects of carbon-based nanomaterials on seed germination, biomass accumulation and salt stress response of bioenergy crops
Bioenergy crops are an attractive option for use in energy production. A good plant candidate for bioenergy applications should produce a high amount of biomass and resist harsh environmental conditions. Carbon-based nanomaterials (CBNs) have been described as promising seed germination and plant growth regulators. In this paper, we tested the impact of two CBNs: graphene and multi-walled carbon nanotubes (CNTs) on germination and biomass production of two major bioenergy crops (sorghum and switchgrass). The application of graphene and CNTs increased the germination rate of switchgrass seeds and led to an early germination of sorghum seeds. The exposure of switchgrass to graphene (200 mg/l) resulted in a 28% increase of total biomass produced compared to untreated plants. We tested the impact of CBNs on bioenergy crops under salt stress conditions and discovered that CBNs can significantly reduce symptoms of salt stress imposed by the addition of NaCl into the growth medium. Using an ion selective electrode, we demonstrated that the concentration of Na+ ions in NaCl solution can be significantly decreased by the addition of CNTs to the salt solution. Our data confirmed the potential of CBNs as plant growth regulators for non-food crops and demonstrated the role of CBNs in the protection of plants against salt stress by desalination of saline growth medium.
Supplementary material 5 from: Doycheva I (2022) Influence of proline and methyl jasmonate priming on in vitro seed germination and seedling development of Chelidonium majus L. In: Chankova S, Peneva V, Metcheva R, Beltcheva M, Vassilev K, Radeva G, Danova K (Eds) Current trends of ecology. BioRisk 17: 227-240. https://doi.org/10.3897/biorisk.17.77465
Figure S5
Supplementary material 6 from: Doycheva I (2022) Influence of proline and methyl jasmonate priming on in vitro seed germination and seedling development of Chelidonium majus L. In: Chankova S, Peneva V, Metcheva R, Beltcheva M, Vassilev K, Radeva G, Danova K (Eds) Current trends of ecology. BioRisk 17: 227-240. https://doi.org/10.3897/biorisk.17.77465
Figure S6
Supplementary material 1 from: Doycheva I (2022) Influence of proline and methyl jasmonate priming on in vitro seed germination and seedling development of Chelidonium majus L. In: Chankova S, Peneva V, Metcheva R, Beltcheva M, Vassilev K, Radeva G, Danova K (Eds) Current trends of ecology. BioRisk 17: 227-240. https://doi.org/10.3897/biorisk.17.77465
Figure S1
Supplementary material 3 from: Doycheva I (2022) Influence of proline and methyl jasmonate priming on in vitro seed germination and seedling development of Chelidonium majus L. In: Chankova S, Peneva V, Metcheva R, Beltcheva M, Vassilev K, Radeva G, Danova K (Eds) Current trends of ecology. BioRisk 17: 227-240. https://doi.org/10.3897/biorisk.17.77465
Figure S3
Supplementary material 2 from: Doycheva I (2022) Influence of proline and methyl jasmonate priming on in vitro seed germination and seedling development of Chelidonium majus L. In: Chankova S, Peneva V, Metcheva R, Beltcheva M, Vassilev K, Radeva G, Danova K (Eds) Current trends of ecology. BioRisk 17: 227-240. https://doi.org/10.3897/biorisk.17.77465
Figure S2
Supplementary material 4 from: Doycheva I (2022) Influence of proline and methyl jasmonate priming on in vitro seed germination and seedling development of Chelidonium majus L. In: Chankova S, Peneva V, Metcheva R, Beltcheva M, Vassilev K, Radeva G, Danova K (Eds) Current trends of ecology. BioRisk 17: 227-240. https://doi.org/10.3897/biorisk.17.77465
Figure S4
Figure 1 in Seed germination of Ornithogalum saundersiae, under different temperatures
Figure 1. Reproductive structure of Ornithogalum saundersiae (ornitogalo). A. inflorescence at the point of maximum floral opening; B. dehiscent fruits with opening of the loculi. Scale bar: A-B = 2.5 cm.
Fig. 2 in Asymbiotic seed germination and in vitro propagation condition in Calanthe discolor Lindl.
Fig. 2. Effects of culture medium and 1% NaOCl treatment on embryo diameter of Calanthe discolor after 0, 2, 4, 6 and 8 weeks in vitro culture. (A) Effect of treatment with or without 1% NaOCl on seeds in POM medium; (B) SGM medium; (C) MS medium. Values are represented as the mean±SD.
Fig. 1 in Asymbiotic seed germination and in vitro propagation condition in Calanthe discolor Lindl.
Fig. 1. Developmental stages of asymbiotically cultured Calanthe discolor seeds. (A) surface of seed coat without NaOCl treatment; (B) surface of seed coats after 1% NaOCl treatment for 30 min by SEM (arrows: perforation); (C) hyaline embryo, seed coatintact; (D) embryos swollen after 2 weeks of culture; (E) swellled embryos present rhizoids after 6 weeks of culture; (F) appearance of protomeristem and rhiz oid elongation after 7 weeks culture; (G) appearance of chlorophyllous protomeristem after 10 weeks of culture; (H) shoot formation via the shoot axis; (I) The welldeveloped plantlets were removed from POM medium; Scale bars: A, B = 100 μm, CG = 1.0 mm, H, I = 25.0 mm.
Figure 1 A in Occurrence of Heilipus draco (Coleoptera: Curculionidae) in seeds of Ocotea puberula (Lauraceae) and its influence on germination
Figure 1 A – Ocotea puberula branch with inflorescence; B - Flower buds and open flowers; C - Different colors of fruits during ripening, (i) green colored fruit and green cupule, (ii) green colored fruit and red cupule and (iii) ripe black colored fruit and red cupule; D - Fruit in development; E - Healthy fruit with the developed embryo; F - Endophytic egg layings in ripe fruit, with the egg being deposited directly in the embryo; G, H, I - Isolated egg inside the gallery held by the female; J - Larva consuming the embryo; K - Larva in development consuming the embryo and forming galleries in it; L - Detail of the hole made by Heilipus draco to emerge from inside the seed; N - Dorsal face of H. draco; O - Lateral face of H. draco; P - Detail of the metabolite residues removed by the larvae inside the seed on the vermiculite; Q - H. draco emerged and detail of the seed with the orifice of emergence over the vermiculite. (EM: embryo; EN: endocarp; EP: epicarp; ME: mesocarp; PE: pericarp; IN: integument and nucleus; SI: seed integument).
Fig. 1 in Impact of floral activities of bee species (Hymenoptera: Apidae) on seed yield and germinability of Calotropis procera (Asclepiadaceae) in northern Cameroon
Fig. 1. Location map of the study area. © Michelson Azo'o Ela & Pierre Manga.
Fig. 8 in Impact of floral activities of bee species (Hymenoptera: Apidae) on seed yield and germinability of Calotropis procera (Asclepiadaceae) in northern Cameroon
Fig. 8. Daily rhythm of seedling formation.
Fig. 7 in Impact of floral activities of bee species (Hymenoptera: Apidae) on seed yield and germinability of Calotropis procera (Asclepiadaceae) in northern Cameroon
Fig. 7. Linear regression between temperature and daily variation of insect visits.
Fig. 3 in Impact of floral activities of bee species (Hymenoptera: Apidae) on seed yield and germinability of Calotropis procera (Asclepiadaceae) in northern Cameroon
Fig. 3. Inflorescences of Calotropis procera. a, unbagged. b, bagged. © Michelson Azo'o Ela.
Fig. 2 in Impact of floral activities of bee species (Hymenoptera: Apidae) on seed yield and germinability of Calotropis procera (Asclepiadaceae) in northern Cameroon
Fig. 2. Calotropis procera in field experiment. © Michelson Azo'o Ela.
SEED GERMINATION DYNAMICS OF XANTHIUM STRUMARIUM L. (AN ECOLOGICAL PERSPECTIVE)
Open the record for dataset details and reuse information.
ScienceDex guides
Understand access before you commit
These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.