Search Results

1 - 10 of 36 items :

  • "basic density" x
Clear All
Short Note: The Genetic Correlation Between Air-dried Density and Basic Density in Eucalyptus Nitens Wood Cores

-176. SAS INSTITUTE INC. (2002): The SAS system for Windows, Version 9.1. TAPPI (1989): Basic density and moisture content of pulpwood. no. T258 om-98, Technical Association of the Pulp and Paper Industries (TAPPI).

Open access
Genetic Parameters and Genotype by Environment Interactions for Green and Basic Density and Stiffness of Pinus radiata D. Don Estimated Using Acoustics

Abstract

Genetic parameters and genotype by environment interactions for wood properties of 13-year-old Pinus radiata were determined by sampling two progeny trials on contrasting sites in the southern slopes of New South Wales, Australia. Heritability of green and basic density were determined together with dynamic modulus of elasticity (MOE) measured using TreeTap. The phenotypic variance in MOE (CV 17-18%) was almost three times that of basic density. MOE and basic density were highly heritable at both sites (h2 0.57 & 0.79 for MOE & 0.59 and 0.85 for density). There was a moderately strong genetic correlation between MOE and basic density (0.64 across-sites). No genotype x environment interaction was detected in MOE or basic density. Basic density and MOE were lower on the warmer, lower rainfall site.

Open access
Radial variation in the wood properties of Scots pine (Pinus sylvestris L.) grown on former agricultural soil

sylvestris L.) from mature stands. Annals of Warsaw University of Life Sciences - SGGW, Forestry and Wood Technology , 65: 150-157. Jelonek T., Tomczak A., Jakubowski M., Pazdrowski W. 2005. Properties of Scots pine (Pinus sylvestris L.) timber growing on former arable and forest land. Acta Scientiarum Polonorum Silvarum Colendarum Ratio et Industria Lignaria , 4 (2): 35-47. Kärenlampi P. P. Riekkinen M. 2004. Maturity and growth rate effects on Scots pine basic density. Wood Science and Technology , 38: 465-473. Klisz M

Open access
The Effects of Drying Temperature and Method of Assessment on the Expression of Genetic Variation in Gross Shrinkage of Eucalyptus globulus Wood Samples

influence of basic density and pulp yield on the cost of eucalypt kraft pulping: a theoretical model for tree breeding. Appita Journal 49: 90-93. GREAVES, B. L., N. M. G. BORRALHO and C. A. RAYMOND (1997): Breeding objective for plantation eucalypts grown for production of kraft pulp. Forest Science 43: 465-472. GREAVES, B. L., G. DUTKOWSKI and T. MCRAE (2004a): Breeding objectives for Eucalyptus globulus for products other than kraft pulp. P. 175-180. In: Eucalyptus in a changing world. Proceedings of an IUFRO conference, Aveiro

Open access
Selected properties of wood in Scots pine (Pinus sylvestris L.) growing on post-agricultural land in northern Poland

. Drewno. Pomiar właściwości fizycznych i mechanicznych. Poznań, Prodruk, ISBN 83-88518-75-5, s. 202. Kollmann F. F. P., Wilfred A.C. J. 1968. Principles of Wood Science and Technology. I. Solid Wood. Berlin — Heidelberg — New York, Springer-Verlag. Kommert R. 1972. Untersuchung der Roh- und Raumdichte von Fichtenholz. Holztechnologie , 13, 4: 229-231. Krzysik F. 1978. Nauka o drewnie. Warszawa, PWN. Lindström H. 1996. Basic density of Norway spruce. Part 2. Predicted

Open access
Comparison Between Open Pollinated Progenies and Hybrids Performance in Eucalyptus grandis and Eucalyptus urophylla

. M. POTTS and J. V. OWEN (1996): A comparison of genetic information from openpollinated and control pollinated progeny tests in two Eucalyptus species. TAG. 92: 53-63. LIMA, J. T., M. C. BREESE and C. M. CAHALAN (2000): Genotype-environment interaction in wood basic density of Eucalyptus clones. Wood Science and Technology 34: 197-206. PEREIRA, J. C. D., J. A. STURION, A. R. HIGA, R. C. V. HIGA and J. Y. SHIMIZU (2000): Características da madeira de algumas espécies de eucalipto plantadas no Brasil, Colombo in Embrapa Florestas

Open access
Relationships between selected tree characteristics and the properties of juvenile wood in Scots pine (Pinus sylvestris L.)

Abstract

The aim of this study was to determine relationships between selected properties of juvenile wood and characteristics of the stem and crown of Scots pine. Analyses were conducted in northern Poland on eight mature pine monocultures. Nine trees were selected in each experimental site and their stems were divided into five sections. The centers of the sections were established at a height of 1.3 m from the tree base and at points corresponding to 20, 40, 60 and 80% tree height. Samples were taken from these locations, and these samples were prepared for analyses of basic density, compressive strength along the grain and static bending, as well as the modulus of elasticity during bending. The mean height of the investigated group of trees was 26.0 m with an average diameter breast high of 33.6 cm. The mean crown depth was 7.8 m and crown diameter was 3.6 m, and the mean basic density (Qu) of juvenile pine wood was 416 kg/m3. The average compressive strength along the grain (CS) was determined to be 22.3 MPa, while static bending strength (BS) was 45.8 MPa. The recorded modulus of elasticity (MOE) was 4726 MPa.

Both in general terms and when dividing stems into sections, the wood properties correlated with tree characteristics to various degrees. All indexes were negative indicating that trees of greater dimensions produce juvenile wood of inferior quality. Properties of juvenile wood formed during various periods of tree life were mostly related to diameter breast high and crown depth. They were also correlated with tree height, but only to a limited extent. In contrast, properties of wood from the middle stem sections were significantly correlated with crown diameter.

Open access
Basic density and crown parameters of forest forming species within Steppe zone in Ukraine

Scots pine. Forestry: An International Journal of Forest Research , 87 (3): 449–458. D eng , X., Z hang , L., L ei , P., X iang , W., Y an , W., 2014. Variations of wood basic density with tree age and social classes in the axial direction within Pinus massoniana stems in southern China. Annals of Forest Science , 71 (4): 505–516. F ajardo , А., 2016. Wood density is a poor predictor of competitive ability among individuals of the same species. Forest Ecology and Management , 372: 217–225. F ischer , R., L orenz , M., G ranke , O., M ues , V., I

Open access
Genetic Variation of Physical and Chemical Wood Properties of Eucalyptus globulus

, 2002. KUBE, P. D., C. A. RAYMOND and P. W. BANHAM (2001): Genetic parameters for diameter, basic density, fibre properties and cellulose content for Eucalyptus nitens. Forest Genet. 8: 285-294. MACDONALD, A. C., N. M. G. BORRALHO and B. M. POTTS (1997): Genetic variation for growth and wood density in Eucalyptus globulus ssp. globulus in Tasmania (Australia). Silvae Genet. 46: 236-241. MIRANDA, I., M. H. ALMEIDA and H. PEREIRA (2001a): Influence of provenance, subspecies, and site on wood density in Eucalyptus globulus

Open access
Genetic variation and genetic gain in growth traits, stem-branch characteristics and wood properties and their relationships to Eucalyptus urophylla clones

. (2002): Gains and losses on sawn wood yield and quality through forest improvement, management and sawing strategies. In: R.WEI and D. XU (eds), Eucalyptus Plantation Research, Management and Development. World Scientific Publishing Co. Pte. Ltd. pp: 392-403. GREAVES, B. L., N. M. G. BORRALHO, C. A. RAYMOND and A. FARRINGTON (1996): Use of a Pilodyn for the indirect selection of basic density in Eucalyptus nitens. Canadian Journal of Forest Research 26(9): 1643-1650. GREAVES, B. L., N. M. G. BORRALHO, C. A. RAYMOND, R. EVANS and P. H

Open access