نتایج جستجو برای: fraxinus

تعداد نتایج: 1122  

2008
Paul Scowcroft

Questions: Is the introduced timber species Fraxinus uhdei invasive in Hawai‘i? Has logging disturbance facilitated the spread of Fraxinus and other alien species? Location: Windward Mauna Kea, island of Hawai‘i. Methods: We surveyed 29 plots which were established before selective logging of the native tree Acacia koa in 1971 to determine if Fraxinus spread beyond the borders of an existing pl...

2013
J. M. Marshall A. J. Storer V. C. Mastro

A predictive model for detection of Agrilus planipennis (Col., Buprestidae) larvae in girdled ash (Fraxinus spp.)A predictive model for detection of Agrilus planipennis (Col., Buprestidae) larvae in girdled ash (Fraxinus spp.)" (2010). USDA Forest Service / UNL Faculty Publications. Paper 153. A predictive model for detection of Agrilus planipennis (Col., Buprestidae) larvae in girdled ash (Fra...

Journal: :Molecules 2015
Rocío García-Villalba Francisco A Tomás-Barberán Pascale Fança-Berthon Marc Roller Pilar Zafrilla Nicolas Issaly María-Teresa García-Conesa

The bark, seeds, fruits and leaves of the genus Fraxinus (Oleaceae) which contain a wide range of phytochemicals, mostly secoiridoid glucosides, have been widely used in folk medicine against a number of ailments, yet little is known about the metabolism and uptake of the major Fraxinus components. The aim of this work was to advance in the knowledge on the bioavailability of the secoiridoids p...

Journal: :Botanical Gazette 1880

Journal: :Molecular ecology 2006
M Heuertz S Carnevale S Fineschi F Sebastiani J F Hausman L Paule G G Vendramin

We investigated range-wide phylogeographic variation in three European ash species (Fraxinus sp., Oleaceae). Chloroplast DNA (cpDNA) microsatellites were typed in the thermophilous Fraxinus angustifolia and Fraxinus ornus and the observed haplotypes and the geographic distribution of diversity were compared to cpDNA data previously obtained in the more cold-tolerant Fraxinus excelsior. We found...

Journal: :American journal of botany 2006
Brendan Choat Tyler W Brodie Alexander R Cobb Maciej A Zwieniecki N Michele Holbrook

The hydraulic resistance of pit membranes was measured directly in earlywood vessels of Fraxinus americana and Ulmus americana. The area-specific resistance of pit membranes (r(mem)) was higher than modeled or measured values obtained previously for hardwood species, with r(mem) of 5.24 × 10(3) MPa·s·m(-1) for Fraxinus and 2.56 × 10(3) MPa·s·m(-1) for Ulmus. The calculated resistance of pit can...

Journal: :Philosophical transactions. Series A, Mathematical, physical, and engineering sciences 2012
U Kohlenbach L Leuştean

This paper addresses new developments in the ongoing proof mining programme, i.e. the use of tools from proof theory to extract effective quantitative information from prima facie ineffective proofs in analysis. Very recently, the current authors developed a method of extracting rates of metastability (as defined by Tao) from convergence proofs in nonlinear analysis that are based on Banach lim...

2012
Mariangela Arca Damien Daniel Hinsinger Corinne Cruaud Annie Tillier Jean Bousquet Nathalie Frascaria-Lacoste

The utility of DNA barcoding for identifying representative specimens of the circumpolar tree genus Fraxinus (56 species) was investigated. We examined the genetic variability of several loci suggested in chloroplast DNA barcode protocols such as matK, rpoB, rpoC1 and trnH-psbA in a large worldwide sample of Fraxinus species. The chloroplast intergenic spacer rpl32-trnL was further assessed in ...

2015
Tadeusz Kowalski Piotr Bilański Ottmar Holdenrieder Simon Shamoun

European ash (Fraxinus excelsior) is currently battling an onslaught of ash dieback, a disease emerging in the greater part of its native area, brought about by the introduction of the ascomycete Hymenoscyphus fraxineus (= Hymenoscyphus pseudoalbidus). The closely-related fungus Hymenoscyphus albidus, which is indigenous to Europe, is non-pathogenic when in contact with F. excelsior, but could ...

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