Results 101 to 110 of about 240 (126)

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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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
openaire   +2 more sources

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
openaire   +1 more source

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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Size-Frequency Characteristics of Abies Fraseri Pollen as Influenced by Different Methods of Preparation

American Midland Naturalist, 1944
No study of the pollen grains of the southern balsam fir, Abies Fraseri (Pursh) Poir., from the highest mountains of Virginia, North Carolina, and Tennessee, has been published which would assist in the identification of the species in investigations of southern sedimenits.
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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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Effect of root competition and nitrogen on growth and mineral content of Abiesfraseri

Canadian Journal of Forest Research, 1987
Three-year-old (3 + 0) Fraser fir seedlings (Abiesfraseri (Pursh) Poir.) were grown in a controlled-environment chamber under four N regimes, with and without root competition from orchard grass (Dactylisglomerata L.) or white clover (Trifoliumrepens L.). New shoot, stem, and root growth of Fraser fir were harvested 30, 60, and 90 days after budbreak.
Stuart L. Warren, Walter A. Skroch, L. Eric Hinesley   +2 more
openaire   +1 more source

Impacts of cloud immersion on microclimate, photosynthesis and water relations of Abies fraseri (Pursh.) Poiret in a temperate mountain cloud forest

Oecologia, 2008
The red spruce-Fraser fir ecosystem [Picea rubens Sarg.-Abies fraseri (Pursh) Poir.] of the southern Appalachian mountains, USA, is a temperate zone cloud forest immersed in clouds for 30-40% of a typical summer day, and experiencing immersion on about 65% of all days annually.
Keith, Reinhardt, William K, Smith
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Dormancy in Abiesfraseri seedlings at the end of the first growth cycle

Canadian Journal of Forest Research, 1982
Two experiments were conducted to examine the effect of chilling duration and postchilling photoperiod on breaking dormancy in Fraser fir (Abiesfraseri (Pursh) Poir.) seedlings. Chilling durations were 0, 2, 4, 6, 8, 10, or 12 weeks at 4 °C. Five postchilling photoperiods were used: 9, 12, 15, and 18 h, or a9-h natural day plus a3-h night light break ...
openaire   +1 more source