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 24 for “"Ericaceae"”.
-
Systematic studies in the tribe Ericeae (Ericaceae-Ericoideae)
[P. ii (abstract) missing]Ericaceae, to which the heaths and heathers belong, is a large widespread family comprising some 125 genera with 3000-4000 species (Sleumer 1966, Luteyn 1980). It has been divided up into several subfamilies and tribes and has included several other families, depending on …
-
The phylogeny, morphological evolution and biogeography of the Gaultherieae (Ericaceae).
The tribe Gaultherieae (Ericaceae: subfamily Vaccinioideae) comprises Chamaedaphne Moench, Diplycosia Blume, Eubotrys Nutt., Eubotryoides (Nakai) Hara, Gaultheria Kalm ex L., Leucothoë D. Don, and Tepuia Camp., with a total of approximately 250 species. The tribe is defined by its four-appendaged …
-
Seed morphology, dormancy and germination of South-West Australian Ericaceae
The Ericaceae in South West Australia contains species with difficult to germinate seeds, including many species with deep intractable dormancy. A better understanding of seed biology and species specific dormancy, and germination mechanisms is required to overcome these difficulties. Land …
-
Aspects of phosphorus nutrition in endomycorrhizal fungi of the Ericaceae
An investigation was undertaken on the phosphorus nutrition of the ericoid endophytes isolated from the root systems of Vaccinium macrocarpon, Aiton, Rhododendron ponticum L., Calluna vulgaris (L.) Hull, Erica hispidula L., and E. mauritanica L.
-
Phylogenetic Studies of the Laurels and Heathers (Ericaceae: Ericoideae, Phyllodoceae and Cassiope Clades)
… within the laurel and heather clades within the Ericaceae. The two groups are members of two closely related clades, the Ericoideae and Cassiope. Phylogenetic relationships within the subfamily Ericoideae were investigated first in order to establish its main clades. Five main clades were …
-
The Inhibitory Effect of Rhododendron maximum L. (Ericaceae) Thickets on Mycorrhizal Colonization of Canopy Tree Seedlings
Thickets of Rhododendron maximum (Rm) in the southern Appalachians impose severe limitations on the regeneration of hardwood and coniferous seedlings. Interactions between Rm thickets and ectomycorrhizal colonization were examined to explain seedling inhibition. Experimental blocks were established …
-
Occult moisture inputs in the fynbos : Foliar moisure uptake in Ericaceae, Restionaceae and Proteaceae / Annabelle J. Rogers
'Occult' precipitation may be an important moisture source that can impact specific plant responses to water stress in certain ecosystems. Species in many ecosystems have been shown to use this moisture source via foliar moisture uptake. The Cape Peninsula and the surrounding southern coast …
-
Inhibition of Canopy Tree Seedlings by Thickets of <I>Rhododendron maximum</I> L. (Ericaceae) in an Eastern Deciduous Forest
<I>Rhododendron maximum</I> L. (Ericaceae) is an evergreen shrub that grows in dense thickets and currently covers large areas of the understory in the deciduous forests of the southeastern United States. Thickets of R. maximum are inhibitory to recruitment and regeneration of many understory …
-
Investigating the ecology of partial and full myco-heterotrophy among Orchidaceae and Ericaceae using the stable isotope natural abundance analysis approach
… similar situation occurs in the tribe Pyroleae (Ericaceae), consisting of mostly photosynthetic species that, as like as orchids, produce ‘dust seeds’ without endosperm and thus rely upon fungal support during early development. The use of stable isotope natural abundance analyses recently …
-
Taxonomic studies in the genus Acrostemon Kl. and related genera
… carried out on the genus Asrostemon Kl. in the Ericaceae. Examination of variation ranges in the species of Acrostem912 revealed that the two monotypic genera, Hexastemon Kl. and Arachnocalyx Compton, could not be upheld as separate genera. They were therefore reduced under Acrostemon. Studies …
-
Studies in the comparative anatomy of the Clethraceae
… are thought to be the Theaceae and the lower Ericaceae.
-
The sensitivity of South African plants to acute dosages of sulpher dioxide
… well represented in the South African flora, Ericaceae were resistant while Proteaceae were sensitive to SOâ‚‚. The injury symptoms developed have been described and foliar necrosis evaluated in terms of an injury index. The results of this study form the first documented account of the …
-
Isolation and Structure Elucidation of Antiproliferative and Antiplasmodial Natural Products from Plants
… terpenoid (4.1) was isolated from Erica maesta (Ericaceae), and four cerebrosides (4.2-4.5) were obtained from Hohenbergia antillana (Bromeliaceae). The structures of these compounds were elucidated by using 1D (1H and 13C), 2D (HMBC, HSQC, COSY, NOESY) NMR spectroscopy and mass spectrometry. The …
-
Drivers of reproductive variability in Vaccinium cespitosum and vaccinium vitis-idaea in northeastern Minnesota
… Vaccinium cespitosum and Vaccinium vitis-idaea (Ericaceae), and how the history of land management affects reproductive variability in V. cespitosum. Vaccinium populations with a history of land management are expected to have higher reproductive potential than populations that have not been …
-
A theoretical and empirical framework for measuring minimum conductance, an understudied plant drought trait
… of the Cape Floristic Region, namely Proteaceae, Ericaceae, and Restionaceae, to improve our understanding of drought response in these groups while demonstrating how this framework helps to improve minimum conductance measurements. Results showed a diverse response of minimum conductance values …
-
Geohydrological characteristics of Table Mountain Group aquifer-fed seeps and the plant ecophysiological consequences
… the six global plant kingdoms (Takhtajan, 1986). Ericaceae, Iridaceae, Proteaceae and the Restionaceae are well represented and there are a number of families that are endemic or nearly so (Goldblatt and Manning, 2002). The largest is the Penaeaceae, followed by Grubbiaceae, Roridulaceae and …
-
The Influence of Dense Understory Shrubs on the Ecology of Canopy Tree Recruitment in Southern Appalachian Forests
… spreading thickets of Rhododendron maximum L. (Ericaceae) in southern Appalachian forests is an issue of major concern because of the potential impacts on forest productivity, hydrology and wildlife habitat. Many studies have investigated the causes of seedling inhibition beneath dense shrub …
-
Cranberry metabolites with urinary anti-adhesion activity
… American cranberry (Vaccinium macrocarpon Aiton, Ericaceae) is a comfood and a top selling dietary supplement in the U.S. Cranberry juice is traditionally used for the prevention of urinary tract infections (UTIs), many of which are caused by P-fimbriated Escherichia coli. Human urine produced …
-
Palaeoecology and vegetation dynamics in the Cederberg wilderness area
… taxa have not declined, apart from possibly Ericaceae, suggesting that changes in fire have not exceeded a threshold that affects the community at a family level. Changes in the fire regime, combined with disturbance by ploughing and grazing have increased the abundance of Poaceae and …
-
Holocene landscape history of southern Portugal
… with an increase in moor and heath taxa, notably Ericaceae and Cistaceae. The results permit a re-evaluation of the debated role of anthropogenic impact on the Algarve landscape. Finally, the results of both sedimentary and pollen analyses are placed in the wider regional context of the Iberian …
Page 1 of 2