Results 141 to 150 of about 1,409 (170)

Structure and function of flexure wood in Abies fraseri

Tree Physiology, 1989
Wood produced during flexure in one-year-old leaders of Abies fraseri (Pursh) Poir. (Fraser fir) was analyzed anatomically and radio-densitometrically. More xylem cells were produced in stems subjected to flexing than in stems that were not flexed. The lumens of tracheids produced in response to flexure were smaller than the lumens of tracheids in ...
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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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Patterns of Abies fraseri Regeneration in a Great Smoky Mountains Spruce-Fir Forest

Bulletin of the Torrey Botanical Club, 1990
PAULEY, E. F. AND E. E. C. CLEBSCH (Graduate Program in Ecology, University of Tennessee, Knoxville, TN 37996-1610. Pattems of Abiesfraseri regeneration in a Great Smoky Mountains spruce-fir forest. Bull. Torrey Bot. Club 117: 375-381. 1990.-Abiesfraseri (Pursh) Poir.
Eric F. Pauley, Edward E. C. Clebsch
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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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Cloud pattern and water relations in Picea rubens and Abies fraseri, southern Appalachian Mountains, USA

Agricultural and Forest Meteorology, 2012
Abstract The spruce-fir [Picea rubens Sarg.-Abies fraseri (Pursh) Poir.] forests of the southern Appalachian Mountains are considered refugial, endangered communities that exist on only seven mountaintop areas in Virginia and North Carolina, USA. These relict forests continue to be threatened by stress factors such as logging, acid rain deposition ...
Z. Carter Berry, William K. Smith
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Experimental cloud immersion and foliar water uptake in saplings of Abies fraseri and Picea rubens

Trees, 2013
Frequent cloud immersion events result in direct uptake of cloud water and improve plant water potentials during daylight hours in saplings of two dominant cloud forest species. In ecosystems with frequent cloud immersion, the influence on plant water balance can be important.
Z. Carter Berry, William K. Smith
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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
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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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