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.
189
datasets available to search
ShareScore release 0.9.0
Dataset results
189 results for “seed morphology”
Morphological Data for 95 populations of Silene seeds
<p> </p> <p>Raw data for Area, Perimeter, Length, Width, Aspect Ratio, Circularity, Roundness and Solidity for the lateral and dorsal views of 102 populations belonging to 52 species (49 species of <em>Silene</em> and three related species).</p>
Seed morphology data for Orchis canariensis and Orchis patens
<p>Dataset of seed mesures for <em>Orchis canariensis</em> and <em>Orchis patens</em> used in the publication:</p> <p><strong>"SEED MICROMORPHOLOGY SUPPORTS SPECIES DELIMITATION OF ORCHIS CANARIENSIS (ORCHIDACEAE), AN ENDEMIC ORCHID FROM CANARY ISLANDS"</strong> - Nature Conservation Research</p> <p>By Jacopo Calevo, Miriam Bazzicalupo, Cristina González-Montelongo, Daniel Rodríguez González, Laura Cornara</p> <p>Abstract:</p> <p>Geographic isolation is one of the primary drivers of speciation, but islands remain a reservoir of overlooked and understudied endemic species. In this study, we collected seed micromorphological data from <em>Orchis canariensis </em>(Orchidaceae), a declining species occurring only in Canary Islands (Spain), whose taxonomy was debated in the past decades. The aim of the study was to detect seed micromorphological traits in support of species delimitation by means of light and scanning electron microscopy. Seeds from a population in Tenerife resulted to be clavate with a cell number in the longitudinal axis varying from five to seven. Seeds showed straight to sinuous anticlinal walls and no ornamentations in the periclinal walls. Average seed length was 313.66 ± 44.78 µm and average width 184.31 ± 30.26 µm, with a ratio of 1.72 ± 0.25, while embryo length and width were 157.18 ± 35.21 µm and 125.43 ± 25.92 µm respectively. However, despite the affinities with the sister species, <em>Orchis patens</em>, quantitative and qualitative seed traits supported species delimitation recently proposed by means of molecular biology. Taken together, our results confirmed the importance of seed micromorphology in support of taxonomical studies.</p>
Fig. 5 in Variation In Cone And Seed Morphology Traits Among The Mitochondrial Dna Haplotypes Of Scots Pine (Pinus Sylvestris L.)
Fig. 5. Distribution of the seed wing shape (%, units) between and within Scots pine mitotypes.
Data from: Phylogenetics and seed morphology of African Nymphoides (Menyanthaceae)
<p>We evaluated the boundaries among <i>Nymphoides</i> (Menyanthaceae) species in Africa, a region where the genus has received relatively little study. We gathered morphological data from seeds using light and scanning electron microscopy, and we conducted molecular phylogenetic analyses using nuclear sequence data from the internal transcribed spacer (ITS) region. Morphological and molecular features distinguished six species and affirmed their respective geographic ranges. No African specimens were attributable to <i>Nymphoides indica</i>, even though this paleotropical species previously had been understood to grow in Africa. We establish the new combination <i>Nymphoides senegalensis</i> (G. Don) Tippery, based on an established African basionym, to accommodate the specimens formerly identified as <i>N. indica</i>. Phylogenetic analyses resolved two distinct clades containing African species. The majority of African species are closely related to neotropical species, with which they share similar petal ornamentation. The morphologically distinct <i>N. ezannoi</i> shares floral and phylogenetic similarity with species from North America and Asia. Results presented here support prior hypotheses that allopolyploid species in the Americas may have originated from one or more parental lineages in Africa. Seed morphological characters remain some of the most reliable features for identifying species, particularly for herbarium specimens lacking observable floral characters.</p>
Data from: Phylogenetics and seed morphology of African Nymphoides (Menyanthaceae)
Open the record for dataset details and reuse information.
Data from: Seasonality and morphological variation shape intraspecific seed dispersal networks in gopher tortoises
Open the record for dataset details and reuse information.
Significance of fruit and seed morphology in current taxonomy of the genus Iberis L. (Brassicaceae) in Turkey
Open the record for dataset details and reuse information.
Data from: Numerical analyses of seed morphology and its taxonomic significance in the tribe Nigelleae (Ranunculaceae)
In this study, the seed morphology of the taxa Nigella, Garidella, and Komaroffia were examined to provide systematic knowledge about the tribe Nigelleae. The seeds of 21 taxa in 20 species from Mediterranean and West Asian countries were studied using both zoom stereo and scanning electron microscopy (SEM). A principal coordinate analysis (PCoA) and Unweighted average linkage analysis (UPGMA) were performed to assess the contribution of seed characters to defining the taxonomy of the tribe. Representative pictures from zoom stereo microscopy and SEM studies and measurement of seeds were prepared. Seed shape and color are controversy with proposed generic level of the tribe. Macromorphological characters have importance at sectional level rather than generic level. Five main types of seed ornemantations– rugulose+striate, granulate, smooth, rugulose and mucronulate‐ were detected. Patterns in seed micromorphology, however, mainly supported taxonomic relationships at sectional treatment in Nigella and two of the three sections are well differentiated based on only seed characters. Seed morphology alone provide good support to Garidella as a distinct species, but it shows less taxonomic value for Komaroffia. Distinct seed shape, size, and surface sculpturing separated studied taxa into five main groups.
Data from: Plastid and seed morphology data support revised infrageneric classification and African origin of the pantropical genus Xylopia (Annonaceae)
The floristic treatment of Engler and Diels, published in 1901, provides the only infrageneric classification of the pantropical genus Xylopia (Annonaceae). Here we test and extend that classification using molecular and seed morphology characters. Phylogenetic relationships were reconstructed using data from four plastid regions obtained from 44 of the approximately 165 species in the genus, recovering four well-supported major clades. Seed characters were examined for these taxa, and six aril morphologies, three previously undocumented, were distinguished; we also document the presence of a sarcotesta on the seeds of many species. Molecular and seed data support recognition of five sections within the genus; one, Xylopia sect. Rugosperma, is proposed here as new. Our phylogenetic results suggest an African origin for the genus and reveal complex biogeographic patterns, likely facilitated by long-distance dispersal.
Data from: Seed morphology of Ruellieae Species (Acanthaceae) in Brazil and its taxonomic implications
Ruellieae is a highly diverse tribe of Acanthaceae in Brazil, and morphological studies of its seeds have revealed important information about the systematics of the tribe. We analyzed the seed morphology of Brazilian species of Ruellieae, using stereoscopic, light, and scanning electron microscopy. The best-sampled genus was Ruellia (53 species), followed by Dyschoriste (seven), and Hygrophila (three); including external groups, a total of 65 species of Ruellieae (68 of Acanthaceae) were sampled. We observed capsular fruits with explosive dehiscence, important for autochory, and discoid seeds covered by hygroscopic and mucilaginous trichomes. The characters most relevant to the taxonomy of the groups were fruit shape, number of ovules, and the distribution, shape, and number of rings on the seed trichomes, the latter two addressed here for the first time. Those characters proved useful for discriminating and characterizing the sampled genera within Ruellieae, and especially the infrageneric clades of Ruellia. Based on the morphological patterns observed, we provide a key for those taxa, and suggest the infrageneric placement of unclassified Ruellia species: R. hypericoides and Ruellia sp. 4 for the clade "Ebracteolati" s. l., Ruellia spp. 2 and 3 for "R. inflata", Ruellia sp. 1 for "Euruellia" s. s., and R. anamariae for the clade "Blechum". In a broader context, we corroborate the finding that partial loss of seed trichomes is exclusive to one of the two large lineages of Neotropical Ruellia (lineage II). The hygroscopic and mucilaginous trichomes of Ruellieae seeds play important roles in water retention, germination, protection, and secondary dispersal, and we discuss some aspects of secondary hydrochory and epizoochory on medium- and long-range dispersal of Ruellieae, including transatlantic distances.
FIGURE 6. A in Larval morphology and biology of three European species of Megastigmus (Hymenoptera, Torymidae, Megastigminae) parasitoids of gall wasps, including a comparison with the larvae of two seed-infesting species
FIGURE 6. A. Cross section of a gall of Andricus kollari showing a larva of M. dorsalis in a secondary cell of the inquiline Synergus umbraculus, and the central cell occupied by the larva of M. stigmatizans. B. Larva of M. dorsalis in a peripheral cell of a gall of A. kollari. C. Larva of M. dorsalis in a gall of Andricus grossulariae (sexual gen.). D. Crosssection of a gall of Plagiotrochus kiefferianus with larvae of M. dumicola E. Larva of M. stigmatizans. F. Detail of head of the larva of M. stigmatizans. G. Cross section of a gall of A. kollari showing the central cell with a larva of M. stigmatizans. H. A seed inside a hip of Rosa sp., attacked by a larva of M. aculeatus.
FIGURE 5 in Larval morphology and biology of three European species of Megastigmus (Hymenoptera, Torymidae, Megastigminae) parasitoids of gall wasps, including a comparison with the larvae of two seed-infesting species
FIGURE 5. Mandibles of the final-instar larvae of Megastigmus. A. M. dorsalis, left mandible anterior view. B. M. dorsalis left mandible, posterior view. C. M. pistaciae, right mandible, posterior view D. M. dumicola, left mandible, anterior view E. M. dumicola, right mandible, anterior view. F. M. aculeatus, right mandible, posterior view G. M. stigmatizans, left mandible, anterior view. H. M. stigmatizans, right mandible, anterior view.
FIGURE 1 in Larval morphology and biology of three European species of Megastigmus (Hymenoptera, Torymidae, Megastigminae) parasitoids of gall wasps, including a comparison with the larvae of two seed-infesting species
FIGURE 1. Ventral view of final-instar larvae of Megastigmus. A. M. dorsalis ex Andricus kollari (asexual). B. M. dorsalis ex Andricus grossulariae (sexual). C. M. dumicola ex Plagiotrochus kiefferianus (asexual). D. M. stigmatizans ex Andricus kollari (asexual). E. M. pistaciae ex seeds of Pistacia lentiscus F. M. aculeatus ex seeds of Rosa sp.
FIGURE 2 in Larval morphology and biology of three European species of Megastigmus (Hymenoptera, Torymidae, Megastigminae) parasitoids of gall wasps, including a comparison with the larvae of two seed-infesting species
FIGURE 2. Lateral view of final-instar larvae of Megastigmus. A. M. dorsalis ex Andricus kollari (asexual). B. M. dumicola ex Plagiotrochus kiefferianus (asexual). C. M. stigmatizans ex Andricus kollari (asexual). D. M. aculeatus ex seeds of Rosa sp.
FIGURE 4 in Larval morphology and biology of three European species of Megastigmus (Hymenoptera, Torymidae, Megastigminae) parasitoids of gall wasps, including a comparison with the larvae of two seed-infesting species
FIGURE 4. Anterior view of mouthparts of final-instar larvae of Megastigmus. A. M. dorsalis ex Andricus kollari (asexual). B. M. dorsalis ex Andricus grossulariae (sexual). C. M. dumicola ex Plagiotrochus kiefferianus (asexual). D. M. stigmatizans ex Andricus kollari (asexual). E. M. pistaciae ex seeds of Pistacia lentiscus F. M. aculeatus ex seeds of Rosa sp.
FIGURE 3 in Larval morphology and biology of three European species of Megastigmus (Hymenoptera, Torymidae, Megastigminae) parasitoids of gall wasps, including a comparison with the larvae of two seed-infesting species
FIGURE 3. Anterior view of the head of the final-instar larvae of Megastigmus. A. M. dorsalis ex Andricus kollari (asexual). B. M. dorsalis ex Andricus grossulariae (sexual). C. M. dumicola ex Plagiotrochus kiefferianus (asexual). D. M. stigmatizans ex Andricus kollari (asexual). E. M. pistaciae ex seeds of Pistacia lentiscus F. M. aculeatus ex seeds of Rosa sp. Arrows point at antennal setae and anterior margin of clypeus.
FIGURE 3 in Pollen and seed micro-morphology of the genus Polygala (Polygalaceae) in Iran
FIGURE 3. SEM micrographs of pollen grains of Iranian Polygala species:—P. monspeliaca: A) equatorial view of a whole grain; B) polar and equatorial views of three pollen grains; C) details of apertures and gibbous operculums—P. platyptera: D) intermediate view of a whole grain showing gibbous, reticulate opercula; E) polar view of a whole grain showing 11 apertures; F) details of aperture and operculum—P. hohenackeriana: G) Polar and equatorial view of 2 grains; H) Details of three colpi and gibbous, rugulate opercula; I) polar view of grain showing gemmas in luminas at apocolpium area; J) gemmas in apocolpium area—P. anatolica: K) polar and equatorial view of a whole grain showing verrucate ornamentation on apocolpium; L) intermediate view of a whole pollen grain.
FIGURE 2 in Pollen and seed micro-morphology of the genus Polygala (Polygalaceae) in Iran
FIGURE 2. LM micrographs of pollen grains of Iranian Polygala species—P. monspeliaca: A) polar view; B) equatorial view of whole grain showing 5 colpi and apocolpium area—P. platyptera: C) equatorial view of whole grain showing large gibbous operculums; D) polar view of whole grain showing 11 apertures—P. hohenackeriana: E) equatorial view of whole grain; F) polar view of whole grain showing 11 apertures—P. anatolica: G) equatorial view of whole grain showing large luminas on both polar areas; H) polar view of the whole grain showing 12 apertures—P. mazandaranica: I) equatorial view of whole grain showing endocingulum at the middle of grain; J) polar view of whole grain showing large lumina on apocolpium; K) polar view of a whole pollen showing 11 colpi—P. erioptera: L) equatorial view of a whole pollen; M) one equatorial and two intermediates view of three pollen grains; N) Three pollen grains showing 20 colpi.
FIGURE 1 in Pollen and seed micro-morphology of the genus Polygala (Polygalaceae) in Iran
FIGURE 1. Map of sampling localities of Polygala species included in the present study (red signs). A) P. anatolica; B) P. platyptera; C) P. mazandaranica; D) P. hohenackeriana; E) P. monspeliaca; F) P. erioptera.
FIGURE 5 in Pollen and seed micro-morphology of the genus Polygala (Polygalaceae) in Iran
FIGURE 5. Seeds of examined species. A) P. monspeliaca; B) P. anatolica; C) P. mazandaranica; D) P. hohenackeriana; E) P. erioptera; F) P. platyptera.
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.