Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 31 for “"provenances"”.
-
SILVER FIR AND ITS PROVENANCES IN A CLIMATE CHANGE PERSPECTIVE
… 2: Drought responses of Italian silver fir provenances in a climate change perspective. In a climate change perspective, the resilience of Mediterranean forest ecosystems is closely linked to their ability to cope with drought and rising temperatures. This ability can be influenced by …
-
GENETIC STRUCTURE OF PINUS STROBUS L BASED ON FOLIAR ISOZYMES FROM 27 PROVENANCES
… L.) was studied with foliar isozymes from 27 provenances by starch gel electrophoresis. Twenty-one loci, five fixed, coding for 12 enzyme systems, including three invariants, were used for this study. Indirect evidence for genetic control of these loci was discussed.</p><p>Substantial genetic …
-
Morphological and Physiological Responses of Senegalia senegal (L.) Britton Provenances to Drought, Salinity, and Fertility
… potential among different Senegalia senegal provenances. In the first experiment, we tested early growth and photosynthetic response of seed sources to a cyclic drought treatment. The second greenhouse study examined seed source response to drought, salinity and fertility conditions. Gum …
-
Plasticity, Intraspecific Variability and Local Adaptation to Climatic Extreme Events of Ecotypes/Provenances of Key Plant Species
… Europe. In particular the selective use of plant provenances or ecotypes may help to make ecosystems climate-resilient without a potentially more problematic introduction of exotic species. Especially provenances from warmer, drought-prone regions, with a current climate similar to the projected …
-
Growth responses of nine provenances of Pinus brutia Ten. (Turkish red pine) to different levels of herbaceous competition and soil water
Nine provenances of Turkish red pine (<i>Pinus brutia Ten</i>.), an eastern Mediterranean conifer, taken from a wide range of locations in Turkey, were grown in individual pots in a greenhouse either with or without joint goose goatgrass (<i>Aegilops cylindrica</i> L.) under either high or low soil …
-
Climate change in experimental ecology - The impact of warming and drought on key European tree, heath, and grassland species
… sylvatica differ between central and marginal provenances (manuscript 3)? 4. Does stress response of plant communities and species (heath and grassland) differ if drought reoccurs (manuscript 4)? Concerning the first of the above stated research questions, the comparison of the two warming …
-
Sugar maple (Acer saccharum Marsh.) provenances differ with climate of origin in survival, growth, and traits along a climate gradient: implications for the species' distribution under climate change
Plant ranges, broadly constrained by climate, may be further shaped by interspecific interactions and intraspecific variation in growth and traits. Changing climate and species composition in plant communities lends urgency to the need to better define the factors determining species’ …
-
Some aspects of the seed development and seedling growth of rimu, Dacrydium cupressinum, Lamb
… carried sound seed. Rimu seedlings from 5 provenances (Puketi, Waitakere, Pureora, Westland and Catlins) were used in a variety of growth experiments to examine their responses to different growing irradiances, temperature regimes, photoperiods and seasons. Growth was assessed by growth …
-
Water-use efficiency and productivity in native Canadian populations of Populus trichocarpa and Populus balsamifera
… Populus trichocarpa and Populus balsamifera (2 provenances each). Each species included both a northern and a southern provenance. Correlations between water-use efficiency, nitrogen-use efficiency, ¹³C/¹²C isotope ratio, stomatal conductance, and overall productivity were evaluated. Gas …
-
Root growth potential and bud dormancy of three northern pines with emphasis on eastern white pine
… strong RGP trends between northern and southern provenances of 1-0 eastern white pine and heritability values indicate that RGP is under minimal genetic control in 1-0 eastern white pine seedlings. Northern and southern provenances did display clear differences in seedling morphology and seasonal …
-
Ecology and horticultural potential of Dirca palustris
… to favor alkaline or acidic soils. Although the provenances from which seeds were collected represented diverse soil pH, seedlings of D. palustris were nonetheless sensitive to root-zone pH and preferred acidic media. Seedlings from the three provenances differed in some ways in response to …
-
Canopy dieback and decline in pink gums, Eucalyptus fasciculosa, F.Muell in the Mt Lofty Ranges and adjoining plains
… manipulating water supply to three pink gum provenances showed that there was genetic variation between provenances. This will provide the option in revegetation projects, of matching selection of seed sources to projected climate change. However, in a separate six year study, 12 of 34 pink …
-
Lietuvos Didžiosios Kunigaikštystės katalikiškoji hagiografija: recepcija, sklaida ir šventųjų kulto bruožai XIV a. pabaigoje – XVII a. pradžioje /
… groups of this type of literature, whereas provenances and marginalia were invoked to investigate issues of reading, perception, and dissemination routes. In isolated cases hagiographic literature is associated with its readers’ (owners’) personal piety to the saints; moreover, the …
-
Catholic Hagiography of the Grand Duchy of Lithuania: Reception, Dissemination and Elements of the Saints’ Cult in the Late 14th - Early 17th Century /
… groups of this type of literature, whereas provenances and marginalia were invoked to investigate issues of reading, perception, and dissemination routes. In isolated cases hagiographic literature is associated with its readers’ (owners’) personal piety to the saints; moreover, the …
-
Archean detrital zircons in the Proterozoic Vishnu Schist of the Grand Canyon, Arizona : implications for crustal architecture and Nuna reconstructions
… zircon ages from other cratons does not support provenances in the Wyoming, South China, or Siberian cratons; instead sources may be located in Gawler craton of Australia, North China craton, or Antarctica. If the detrital zircons were far-traveled, this is a new constraint for viable …
-
Provenance, redox conditions, and diagenesis of shales in Chang 7 member of Upper Triassic Yanchang Formation, Ordos Basin, China
… identify its provenance. Results show multiple provenances and reveal that the quartz-albite correlation is a useful provenance indicator. This study provides a detailed reconstruction of provenance, redox conditions, and burial history of a lacustrine shale and improves our understandings on …
-
MAPPING TRADE BY SHIPWRECKS: AN ANALYSIS OF AMPHORA ASSEMBLAGES FROM FOURNOI ARCHIPELAGO (AEGEAN)
… of the raised amphorae indicate a variety of provenances. While some of the artifacts are in good condition, others are less well preserved. The shipwrecks' significance lies particularly in the cargo's heterogeneity albeit with chronological range. Despite their distinct geographical …
-
Diferenciación adaptativa entre poblaciones de Pinus canariensis Chr. Sm. ex DC
… effects in needle phenotypic variability, four provenances from contrasted habitats and included in the provenance trials were studied. Most needle traits were strongly affected by site, displaying a high foliar plasticity. The reaction norms of most traits facing a gradient in drought length …
-
A Classical Marble Head in the Krannert Art Museum: Issues of Identity and Museum Acquisition Policy
… similarities to examples of sculpture with known provenances. Following a close examination of the head and consideration of the possible era of its creation, a history of the acquisition of the head is reconstructed. The head was bought with the understanding that it was a work of Greek art by …
-
The Semliki Basin, Uganda : its sedimentation history and stratigraphy in relation to petroleum accumulation
… gneissose origin, related to continental-block provenances. The X-ray diffraction scans of bulk samples reveal that the mudrocks/claystones are dominated by clay minerals with subordinate quartz, feldspars and calcite. The clay minerals include illite, illite-smectite, kaolinite, …
Page 1 of 2