Search Constraints
Search Results
-
Journal article
Phylogenetic trends in TZ staining analysis of six deep dormancy seeds.
The assessment of seed quality and physiological potential is essential in seed production and crop breeding. In the process of rapid detection of seed viability using tetrazolium (TZ) staining, it is necessary to spend a lot of labour and material resources to explore the pretreatment and staining methods of hard...Peng, Chen Yin ; Wu, Yu ; Huang, Wen Hui ; Deng, Zhi Yun ; Sun, Xiao Rui …
Fat content, Endospermic seeds, Hard seed, Exalbuminous seeds, Physical dormancy, and Phylogenetic relationship
-
Journal article
A new seed bank for Hispaniola to support the conservation and sustainable use of the Caribbean native flora.
Mattana, Efisio ; Manger, Keith R. ; Way, Michael J. ; Ulian, Tiziana ; Garcia, Ricardo …
Conservation, Carribean, Endemic plants, Sustainable use, Hispaniola, and Seed banks
-
Journal article
Predicting the potential threat of Casuarina equisetifolia to three endemic plant species on the Turks and Caicos Islands.
Invasive species are one of the main threats to the loss of global biodiversity. Controlling such species requires a high input of effort and resources and therefore it is important to focus control on areas that will maximize gains for conservation. We present a spatial modelling approach that will help... -
-
Journal article
Phylogenetic placement and reappraisal of Diorygma karnatakense including the new synonym, Diorygma dandeliense, from Maharashtra, India.
This study re-examined the status of species of Eshw. known from the Western Ghats using an integrative taxonomy approach that includes morphological and chemical data, as well as multigene phylogenetic analyses. Prior to this work, the two species and were distinguished primarily on lirellae morphology (branching pattern) and the number... -
Journal article
Seed dormancy concepts in orchids: Dendrobium cruentum as a model species.
Generally, orchids produce dust-like seeds in which endosperm reduction and embryo undifferentiation represent a derived state shared with species in about 11 other plant families. Orchid seeds are proposed to have a special kind of morphological or morphophysiological dormancy. We test this proposition, overcoming several design limitations of earlier studies,...Prasongsom, Sasikarn ; Thammasiri, Kanchit ; Pritchard, Hugh W.
Embryo volume, Dendrobium, Temperature, Germination, Nitrate, DUST seeds, Dormancy, and Dendrobium orchid
-
Journal article
(Epi)genetic control of secondary seed dormancy depth and germination in Capsella bursa-pastoris.
Despite the importance of secondary dormancy for plant life cycle timing and survival, there is insufficient knowledge about the (epigenetic) regulation of this trait at the molecular level. Our aim was to determine the role of (epi)genetic processes in the regulation of secondary seed dormancy using natural genotypes of the... -
Journal article
Piloting development of species conservation action plans in Guinea.
Conservation action plans need to be devised and implemented if we are to reduce the extinction risk faced by globally threatened plants. However, most plant species categorized as threatened globally on the IUCN Red List lack conservation action plans. In West Africa, Guinea is one of the most diverse countries... -
Journal article
Stimulatory and inhibitory effects of light on Cereus repandus (Cactaceae) seed germination are strongly dependent on spectral quality.
In small seeds, light often promotes germination and longer-term exposure to darkness reduces light sensitivity. In cacti inhabiting harsh environments, a rapid response to light exposure is potentially advantageous for seedling establishment. We exposed dark-imbibed seeds of the cactus to doses of red (RED) light and far-red (FR) light. The...Yang, X-Y. ; Pritchard, Hugh W.
Seed traits, Cereus repandus, R–FR light reversibility, Dark-induced dormancy, Light dose, Neglected and underutilized species, and Seed germination
-
Journal article
Seed-coat thickness explains contrasting germination responses to smoke and heat in Leucadendron.
Fire stimulates the germination of most seeds in fire-prone vegetation. Fruits of (Proteaceae) are winged achenes or nutlets that correlate with their requirements for smoke and/or heat in promoting germination. We describe five possible smoke–heat dormancy-release/germination syndromes among plants, of which displays three (no response, smoke only, smoke and heat).... -
Journal article
Assessing non-detrimental trade for a CITES Appendix II-listed plant species: the status of wild and cultivated Galanthus woronowii in Georgia.
A process for the review of significant trade in species listed in CITES Appendix II was established to address problems with the application of CITES Article IV. Article IV states that international trade in Appendix II species requires a Scientific Authority of the state of export to determine that such... -
Journal article
Hyparrhenia variabilis and Hyparrhenia cymbaria (Poaceae): New for the Americas, Successful in Mexico.
(boat thatching grass, ipopo grass) and (no common name), robust African savanna grasses with complex taxonomies, have not yet been reported for the Americas. Large populations were found in central Jalisco, northeastern Michoacán, and Morelos, Mexico. The species grow in maize and sorghum fields as well as on roadsides and... -
Journal article
Molecular phylogeny resolves a taxonomic misunderstanding and places Geisleria close to Absconditella s. str. (Ostropales : Stictidaceae).
The phylogenetic position of the genus and its type species was reconstructed using sequence data of the mitochondrial small subunit (mtSSU), the nuclear large subunit rDNA (nuLSU) and the first subunit of the RNA polymerase ( ). The species, previously classified in (Eurotiomycetes) and (Dothideomycetes), is sister to the type...Aptroot, André ; Parnmen, Sittiporn ; Lücking, Robert ; Baloch, Elisabeth ; Jungbluth, Patricia …
Tropical, Perithecia, Crustose, Systematics, Taxonomy, Lichen, and Geisleria
-
Journal article
Correlated evolution of seed mass and genome size varies among life forms in flowering plants.
Seeds show important variation as plant regenerative units among species, but their evolutionary co-variations with other plant characteristics are still poorly understood. Whilst a positive association of seed mass with genome size (GS) and life forms has already been documented, a broad-scale quantification of their evolutionary correlation and adaptive selection... -
Journal article
Pericarp structure of Glebionis coronaria (L.) Cass. ex Spach (Asteraceae) cypselae controls water uptake during germination.
(L.) Cass. ex Spach is a common Mediterranean weed producing distinctive central and peripheral dormant cypselae with a hard fruit coat, which was previously hypothesized to impose physical dormancy. Analysis of water uptake in cypselae and in naked seeds showed that it preferentially takes place at the basal end of...Garland chrysanthemum, Heterocarpy, Imbibition, Pericarp constraint, Glebionis coronaria, Germination, and Dormancy
-
Journal article
Seed heteromorphy influences seed longevity in Aegilops.
The genus belongs to the secondary gene pool of wheat and has great importance for wheat cultivar improvement. As a genus with only annual species, regeneration from seeds in is crucial. In several species in , spikes produce different seed morphs, both in size and germination patterns. However, little is...Phenology, Seed conservation, Crop wild relatives, Seed dimorphism, Controlled ageing test, Germination ecology, and Soil seed bank