Results 121 to 130 of about 371,590 (149)
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Germination of cut seeds and seedling growth of ash (Fraxinus spp.) in vitro
Canadian Journal of Forest Research, 1995Nonstratified seeds of different genotypes of Fraxinusamericana L. (white ash), Fraxinuspennsylvanica Marsh, (green ash), and Fraxinusangustifolia Vahl. ssp. oxycarpa (narrowleaf ash, of Afghanistan origin) were surface disinfested, cut, and germinated in vitro on agar-solidified MS (Murashige and Skoog) medium containing sucrose and various plant ...
John E. Preece +2 more
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Allometric equations for urban ash trees (Fraxinus spp.) in Oakville, Southern Ontario, Canada
Urban Forestry & Urban Greening, 2014Abstract Tree growth equations are an important and common tool used to effectively assess the yield and determine management practices in forest plantations. Increasingly, they are being developed for urban forests, providing tools to assist urban forest managers with species selection, placement, and estimation of management costs and ecosystem ...
Paula J. Peper +3 more
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Plant Biology, 2010
AbstractCulturable bacteria were isolated from seeds, embryos and contaminated in vitro cultures of ash (Fraxinus excelsior L., F. ornus L. and F. angustifolia L.) and were identified using morphological and molecular analyses. Fourteen morphologically distinct isolates were recovered from seeds of Fraxinus spp.
F Donnarumma +6 more
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AbstractCulturable bacteria were isolated from seeds, embryos and contaminated in vitro cultures of ash (Fraxinus excelsior L., F. ornus L. and F. angustifolia L.) and were identified using morphological and molecular analyses. Fourteen morphologically distinct isolates were recovered from seeds of Fraxinus spp.
F Donnarumma +6 more
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Forest Ecology and Management, 2002
In northern Europe, three closely related Daldinia spp. are found: D. concentrica, D. loculata and D. petriniae. A clear character separating the species is their substrate specificity; stromata of D. concentrica are principally found on Fraxinus excelsior, while stromata of D.
Hanna Johannesson +2 more
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In northern Europe, three closely related Daldinia spp. are found: D. concentrica, D. loculata and D. petriniae. A clear character separating the species is their substrate specificity; stromata of D. concentrica are principally found on Fraxinus excelsior, while stromata of D.
Hanna Johannesson +2 more
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Northeastern Naturalist, 2020
The tidal swamps of the near coastal rivers dominated by ash species (Fraxinus spp.) on the Mid-Atlantic coast of the United States are a globally rare and diverse habitat and, with the invasion of Agrilus planipennis (Emerald Ash Borer [EAB]), are under threat of alteration due to EAB-caused ash mortality.
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The tidal swamps of the near coastal rivers dominated by ash species (Fraxinus spp.) on the Mid-Atlantic coast of the United States are a globally rare and diverse habitat and, with the invasion of Agrilus planipennis (Emerald Ash Borer [EAB]), are under threat of alteration due to EAB-caused ash mortality.
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Biological Invasions, 2012
Emerald ash borer (Agrilus planipennis) (EAB), an Asian woodboring beetle accidentally introduced in North America, has killed millions of ash (Fraxinus spp.) trees and is spreading rapidly. This study examined the effects of tree- and site-level factors on the mortality of ash trees in stands infested by EAB in OH, USA.
Kathleen S. Knight +2 more
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Emerald ash borer (Agrilus planipennis) (EAB), an Asian woodboring beetle accidentally introduced in North America, has killed millions of ash (Fraxinus spp.) trees and is spreading rapidly. This study examined the effects of tree- and site-level factors on the mortality of ash trees in stands infested by EAB in OH, USA.
Kathleen S. Knight +2 more
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Forest Ecology and Management, 2017
Abstract Incidentally introduced in 2002, the expansion of emerald ash borer (EAB) led to widespread ash mortality throughout the eastern United States. A great deal of effort has been invested in containing and controlling this forest invasive species, whereas the ability to regenerate ash from extant seedling and sapling populations following the ...
Joshua J. Granger +2 more
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Abstract Incidentally introduced in 2002, the expansion of emerald ash borer (EAB) led to widespread ash mortality throughout the eastern United States. A great deal of effort has been invested in containing and controlling this forest invasive species, whereas the ability to regenerate ash from extant seedling and sapling populations following the ...
Joshua J. Granger +2 more
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Cryopreservation of Fraxinus spp. embryogenic cultures by slow cooling and vitrification techniques
2009.
Capuana M +3 more
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New ash disease (Fraxinus spp.) and phenological monitoring in clonal seed orchards in Croatia
2013Godine 1992. u Poljskoj je prvi puta zabilježeno značajnije odumiranje običnog jasena (Fraxinus excelsior L.). Od tada do danas novonastali fenomen odumiranja zabilježen je u većini europskih zemalja. Uzročnik nove bolesti jasena fitopatogena gljiva Chalara fraxinea T. Kowalski utvrđena je i opisana 2006. godine.
Kajba, Davorin +2 more
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Nova bolest jasena (Fraxinus spp.) u Hrvatskoj
20131992. godine u Poljskoj je prvi puta zabilježeno značajnije odumiranje običnog jasena (Fraxinus excelsior L.). Od tada do danas novonastali fenomen odumiranja zabilježen je u većini europskih zemalja. Uzročnik nove bolesti jasena fitopatogena gljiva Chalara fraxinea T. Kowalski utvrđena je i opisana 2006. godine.
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