Results 141 to 150 of about 1,424 (167)

Fraser Fir (Abies fraseri [Pursh] Poir.)

2018
Fraser fir ( Abies fraseri [Pursh] Poir.) is a coniferous species native to the Southern Appalachian Mountains of the Eastern United States. Fraser fir has high economic and recreational value but is vulnerable to extinction due to introduced pests and global warming.
Gerald S. Pullman, John Frampton
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Clouds homogenize shoot temperatures, transpiration, and photosynthesis within crowns of Abies fraseri (Pursh.) Poiret

Oecologia, 2017
Multiple studies have examined the effects of clouds on shoot and canopy-level microclimate and physiological processes; none have yet done so on the scale of individual plant crowns. We compared incident photosynthetically active radiation (PAR), leaf temperatures, chlorophyll fluorescence, and photosynthetic gas exchange of shoots in three different ...
J Melissa, Hernandez-Moreno, Nicole M, Bayeur, Harold D, Coley, Nicole M, Hughes   +3 more
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Abies fraseri (Pursh) Poir. (Fraser Fir)

1996
The genus Abies Mill. (firs) is one of the largest in the Pinaceae (Krussman 1985). Liu (1971) provided a taxonomic monograph of the genus Abies, and reported that it included two subgenera with 15 sections composed of 39 species, 27 varieties, and 9 hybrids.
Carole H. Saravitz, Frank A. Blazich
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Propagation of Abiesfraseri by softwood stem cuttings

Canadian Journal of Forest Research, 1985
Effects of collection date, crown position, and indole-3-butyric acid concentration on rooting and subsequent vegetative growth of softwood cuttings taken from 14-year-old Fraser fir (Abiesfraseri (Pursh) Poir.) Christmas trees were studied. Indole-3-butyric acid levels producing maximum rooting (approximately 50%) varied with crown position and date ...
Farrell C. Wise, Frank A. Blazich, L. Eric Hinesley   +2 more
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Induction of embryogenesis in cultured mature zygotic embryos of Abies fraseri (Pursh) Poir

Plant Cell, Tissue and Organ Culture, 1997
Embryo suspensor masses were induced by culture of isolated mature zygotic embryos of Fraser fir (Abies fraseri [Pursh] Poir.). Maximum induction frequencies were observed after 10 weeks culture on one-half strength Murashige and Skoog medium containing 10 µM thidiazuron and on one-half strength Verhagen and Wann medium containing 10 µM cytokinin [6 ...
Todd G. Guevin, Edward G. Kirby
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Thigmomorphogenesis: Field and laboratory studies of Abies fraseri in response to wind or mechanical perturbation

Physiologia Plantarum, 1986
Field‐ and greenhouse‐grown Abies fraseri (Pursh) Poir. (Fraser fir) were analyzed for wind‐ or mechanically‐induced flexure changes. These changes included inhibition of stem and needle elongation, reinforcement of branch bases around the stem, and increased radial growth in the direction of the mechanical perturbation (MP).
F W, Telewski, M J, Jaffe
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Effects of nitrogen form on nutrient uptake and physiology of Fraser fir (Abies fraseri)

Forest Ecology and Management, 2005
Abstract Shade-tolerant conifer species are generally thought to prefer NH 4 + as a source of inorganic N and may perform poorly on recently disturbed sites or agricultural soils with high rates of nitrification. Fraser fir ( Abies fraseri ) is a highly shade-tolerant climax species characteristic of acidic forest soils that is now planted on a ...
David E. Rothstein, Bert M. Cregg
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Using irrigation and mulch to control cone production in Fraser fir (Abies fraseri)

Scandinavian Journal of Forest Research, 2016
ABSTRACTFraser fir (Abies fraseri) is economically important as a Christmas tree in the United States, but trees often produce cones at a young age when grown in plantations in the Midwest. Early cone production is undesirable and decreases the economic value of the tree.
Brent A. Crain, Bert M. Cregg
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Propagation of Abiesfraseri by cuttings: orthotropic shoot production from hedged stock plants

Canadian Journal of Forest Research, 1986
Fraser fir (Abiesfraseri (Pursh) Poir.) stock plants grown as transplants (4 years old) or sheared Christmas trees (14 years old) were subjected to independent combinations of hedging and chemical treatments to induce orthotropic shoot production. Decapitation treatments that removed the most top growth produced the greatest number of orthotropic ...
Farrell C. Wise, Frank A. Blazich, L. Eric Hinesley   +2 more
openaire   +1 more source

Solid phase microextraction for the determination of volatile organics in the foliage of Fraser fir (Abies fraseri)

Microchemical Journal, 2000
Solid phase micro extraction (SPME) was investigated for the determination of volatile chemicals in the foliage of Fraser fir (Abies fraseri). Advantages of SPME include its speed, sensitivity, and ability to determine volatiles without chemical solvents. In this study, qualitative comparisons were performed of the volatiles emitted from living foliage
Delton A Vereen, J.Paul McCall, David J. Butcher   +2 more
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