Results 171 to 180 of about 32,783 (209)
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Leptomelanconium abietis sp. nov. on needles of Abies balsamea
Mycologia, 2001A new species of Coelomycete, Leptomelanconium abietis, is described and illustrated from chlorotic and necrotic needles of Abies balsamea.
Vladimir Vujanovic, Marc St-Arnaud
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Genomic variability in the vascular cambium of Abies balsamea
Canadian Journal of Botany, 1989DNA content was measured cytophotometrically in Feulgen-stained nuclei of fusiform cambial initials from 1- (twig) and 19-year-old (stem base) cambia of balsam fir (Abies balsamea) trees throughout the season. Telophase (2C) and prophase (4C) DNA contents varied with both cambial age and time of year.
E. J. Mellerowicz +2 more
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Phyllotactic patterns and transitions in Abies balsamea
Canadian Journal of Botany, 1985Phyllotactic patterns, as indicated by the number of helices in opposed parastichy pairs, were determined in elongated shoots. Twelve patterns were found, including very rare patterns such as tetrajugy and secondary bijugy. Typically, the same pattern was repeated each year along a particular axis.
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The hydraulic architecture of balsam fir (Abies balsamea)
Physiologia Plantarum, 1984Leaf‐specific conductivities (LSCs – hydraulic conductivity per dry weight of supplied leaves). Huber values (transverse sapwood area per dry weight of supplied leaves), specific conductivity (hydraulic conductivity per transverse sapwood area) and tracheid diameters were measured throughout the trunk and crown of 20‐year‐old trees of Abies balsamca (L.
F. W. Ewers, M. H. Zimmermann
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Factor in Abies balsamea Responsible for Coremia Formation of Ceratocystis piceae
European Journal of Forest Pathology, 1972AbstractCompounds are present in sapwood of Abies balsamea (L.) Mill., triggering the formation of coremia by Ceratocystis piceae (Münch) Bakshi. From several unsaturated fatty acids, linoleic acid is the most active coremia inducer.
P. Neumann, M. Hubbes
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Somatic embryogenesis in cultured mature zygotic embryos of Abies balsamea
Plant Cell, Tissue and Organ Culture, 1994Embryo suspensor masses (ESMs) were induced by culture of isolated mature zygotic embryos of balsam fir [Abies balsamea (Mill.)] on media containing 10 μM cytokinin [6-(γ-γ-dimethylallylamino)purine (2iP), 6-benzyladenine (BA), or thidiazuron (TDZ)].
Todd G. Guevin +2 more
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Ethylene in relation to compression wood formation in Abies balsamea shoots
Trees, 1999The terminal (1-year-old) shoot of dormant, 2-year-old balsam fir [Abies balsamea (L.) Mill.] seedlings was either left vertically oriented or tilted to an angle of 60° from the vertical (tilting experiment), or was ringed with N-1-naphthylphthalamic acid (NPA), an inhibitor of indole-3-acetic acid transport, at a concentration of 0, 1 or 10 mg g−1 ...
C. H. A. Little, Leif Eklund
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Chemical composition of the cortical essential oil from Abies balsamea
Phytochemistry, 1974Abstract Monoterpenoids and sesquiterpene hydrocarbons of Abies balsamea cortical oleoresin (Canada balsam) were analyzed by a combination of chromatographic and spectroscopic methods. Monoterpene hydrocarbons (21%) were composed of β-pinene, α-pinene, β-phellandrene, limonene, 3-carene, myrcene and camphene (listed in order of decreasing ...
Jen Lee Chung +2 more
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An Ultrastructural Analysis of Spruce Budworm-Promoted Defoliation in Abies Balsamea
1989Balsam fir (Abies balsamea), a transcontinental gymnosperm, is of economic importance for lumber and wood pulp. Forest managers are continually faced with demands to increase wood yield. The problem is exacerbated in the case of balsam fir since spruce budworm periodically severely depletes the available wood inventory.
B. A. Oyofo +4 more
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Microchemical Journal, 2006
Abstract The Fraser fir ( Abies fraseri ) and balsam fir ( Abies balsamea ) are eastern North American conifers which have been infested by an exotic insect, the balsam woolly adelgid (BWA). BWA infestation has had particularly severe effects on Fraser fir, with up to 95% mortality rates at some sites, and is characterized by attack on mature trees ...
Samantha J. Carlow +7 more
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Abstract The Fraser fir ( Abies fraseri ) and balsam fir ( Abies balsamea ) are eastern North American conifers which have been infested by an exotic insect, the balsam woolly adelgid (BWA). BWA infestation has had particularly severe effects on Fraser fir, with up to 95% mortality rates at some sites, and is characterized by attack on mature trees ...
Samantha J. Carlow +7 more
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