Results 241 to 250 of about 24,928 (265)

Characterization of Physiological Functions of Sapwood Fluctuation of Extractives in the Withering Process of Japanese Cedar Sapwood

Holzforschung, 1990
In order to characterize the physiological functions of sapwood of needle-leaved tree, ten definite sugar and phenolic constituent contents were periodically determined among outer, middle and inner sapwoods of three Japanese cedars (Sugi, Cryptomeria japonica D. Don, Taxodiaceae) for 150 days after cutting. The fluctuation of these constituents in the
Hideo Ohashi, Takanori Imai, Kazumasa Yoshida, Moritami Yasue   +3 more
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THE SAPWOOD-HEARTWOOD TRANSITION

Australian Forestry, 1952
SUMMARY The transition from sapwood to heartwood in certain species has been described in detail, and the formation of intermediate wood discussed. The distinction between sapwood and heartwood cannot always be clearly made on the basis of colour, or on the presence of starch or tyloses, but must be based on the fundamental change which lies behind ...
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Oxygen Transport in the Sapwood of Trees

2010
Gas composition inside large woody stems differs significantly from that of the ambient atmosphere because of cellular respiration in the xylem, phloem and cambium. Oxygen is required for oxidative respiration, which under most conditions provides the energy for plant cells. The gaseous environment within the woody stems is enriched in CO2 and depleted
MANCUSO, STEFANO, MUGNAI, SERGIO
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Persistence of benomyl in pruned apricot sapwood

Australian Journal of Agricultural Research, 1975
The persistence of benomyl in pruned apricot sapwood was investigated. The amount of fungi toxicant recovered from sapwood after application of 5 µg benomyl to the pruned surfaces varied at different times of the year between 90 and 25% when sampled after 2 hr and between 45 and 15% when sampled after 15 days.
TV Price, MV Carter
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Sapwood allocation in tropical trees: a test of hypotheses

Functional Plant Biology, 2015
Carbon allocation to sapwood in tropical canopy trees is a key process determining forest carbon sequestration, and is at the heart of tree growth and dynamic global vegetation models (DGVM). Several allocation hypotheses exist including those applying assumptions on fixed allocation, pipe model, and hierarchical allocation between plant organs. We use
Schippers, P., Vlam, M., Zuidema, P.A., Sterck, F.J.   +3 more
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Fluid Self-Diffusion in Scots Pine Sapwood Tracheid Cells

The Journal of Physical Chemistry B, 2006
The self-diffusion coefficients of water and toluene in Scots pine sapwood was measured using low field pulsed field gradient nuclear magnetic resonance (PFG-NMR). Wood chips of 8 mm diameter were saturated with the respective liquids, and liquid self-diffusion was then traced in one dimension orthogonal to the tracheid cell walls in the wood's radial ...
Espen H, Johannessen, Eddy W, Hansen, Jarl B, Rosenholm   +2 more
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Response of maple sapwood to injury and infection

European Journal of Forest Pathology, 1995
SummaryIn sapwood challenge experiments in Acer rubrum, columns of discolouration initiated by wounding and inoculation with pioneer fungi (Cephalosporium sp., Phialophora sp.) were similar in size to untreated wounds. Inoculation with decay fungi (Pleurotus ostreatus, Trametes versicolor) produced larger columns of wound‐initiated discolouration.
W. C. Shortle, K. T. Smith, K. R. Dudzik, S. Parker   +3 more
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Morphological and Chemical Differences Between Sapwood, Discolored Sapwood, And Heartwood in Black Locust And Osage Orange

Forest Science, 1968
Abstract A comparison was made of morphological and chemical differences between sapwood, discolored sapwood (wound-initiated discolorations), and heartwood in Maclura pomifera (Raf.) Schneid. and Robinia pseudoacacia L. The heartwood and discolored sapwood in the vicinity of wounds differed significantly in color, water content ...
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Extracellular lipase production by a sapwood-staining fungus, Ophiostoma piceae

World Journal of Microbiology & Biotechnology, 1995
The extracellular lipase production of a sapwood-staining fungus, Ophiostoma piceae, grown in liquid media, was optimally active at pH 5.5 and 37°C. Although glucose, fructose, sucrose, starch and dextrin, as carbon sources for growth gave similar mycelial yields, which were higher than those obtained with arabinose, galactose or raffinose, the cells ...
Y, Gao, C, Breuil
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Notes: Conifer Foliage Mass Related to Sapwood Area

Forest Science, 1974
Abstract Investigation of 52 trees suggests that foliage mass (kg dry weight) of individual Douglas-fir, noble fir, and ponderosa pine trees can be estimated from regressions on sapwood cross-sectional area (cm²) at dbh (1.3m). Equations are respectively y = 0.072 X -1.34, y = 0.51 X -4.63, and y = 0.043 X +7.13. Correlation coefficients
Charles C. Grier, Richard H. Waring
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