scholarly journals Wood colour variation in sapwood and heartwood of young trees of Tectona grandis and its relationship with plantation characteristics, site, and decay resistance

2010 ◽  
Vol 67 (1) ◽  
pp. 109-109 ◽  
Author(s):  
Róger Moya ◽  
Alexander Berrocal
Keyword(s):  
Tectona Grandis ◽  
Decay Resistance ◽  
Colour Variation ◽  
Wood Colour

GC-MS Analysis on Heartwood Extractive Chemical Components of Different Provenances Teak（Tectona Grandis L.f.）

2011 ◽  
Vol 236-238 ◽  
pp. 1049-1053 ◽  
Author(s):  
Cheng Ping Xie ◽  
Kai Fu Li ◽  
Jin Ling Lin ◽  
Jian Bian Li
Keyword(s):  
Phthalic Acid ◽  
Tectona Grandis ◽  
Decay Resistance ◽  
Chemical Components ◽  
Natural Durability ◽  
End User ◽  
Analytical Instruments ◽  
Ms Analysis ◽  
Tectona Grandis L.F

Teak (Tectona grandisL.f) is decay resistance and natural durability. These advantages are relationship with inclusion of teak. For breeding, planting, and the wood used to its best advantage by the end-user, further information concerning the heartwood extractive chemical of different provenances teak is necessary, However, because of limitation of analytical instruments, the extractive chemical components of teak centre on decay resistance relationship with napthoquinone, tectoquinone, and so on, nobody systematacially analyzed heartwood extractive chemical components of different teak. We analyzed and contrasted extractive chemical components of three provenances teak heartwood(Indian, Thailand and Nigeria), and found 109 peak and 74 compounds was identified, the same compounds of 3 provenances were 27. The main compounds were Mequinol, 1,2-benzenediol, 1(3H)-Isobenzofuranone, Vanillin, 1,4-Naphthalenedione, Naphthalene, 1,2,3,4,4a,5,6,8a- octahydro-7-methyl-4-methylene-1- (1- methylethyl), Cyclohexane, 1-ethenyl-1-methyl- 2-(1-methylethenyl)-4- (1- methylethylidene)-, 4,6-Dimethoxysalicylaldehyde, 2-Propenal, 3-(1,3-benzodioxol-5-yl)-, 4-((1E)-3-Hydroxy -1-propenyl) -2-methoxyphenol, 1H-Imidazole, 1-ethyl-, 2-Methylisoborneol, Phthalic acid, phenyl 2-pentyl ester, 1,4-Naphthalenedione, 2-hydroxy-3-(3-methyl-2-butenyl)-, [1,1'-Biphenyl]-2-ol, 5-(1,1-dimethylethyl)-, 9,10- Anthracenedione, 2-methyl-, 1-Hydroxy-4-methylanthraquinone, Indane-1,3-dione, 2-(3-hydroxyphenyl)- 2H-Benzopyran - 2-one, 4-methyl-3-phenyl-, 9,10-Anthracenedione, 1,8-dihydroxy-2-methyl-, 2-(Hydroxymethyl) anthraquinone, 4H-1-Benzopyran-4-one, 3-hydroxy-2-phenyl-, Benzofuran-3-one, 2-[3-hydroxy-4-methoxy benzylidene] -6-hydroxy-, Squalene, .gamma.-Sitosterol, 9,19-Cyclolanost-24-en-3-ol, (3.beta.)-, Cholest-8(14)-en-7-one, (5.alpha.)-.

Colour Variation In Teak (Tectona grandis) Wood From Plantations Across The Ecological Zones Of Ghana

2010 ◽  
Vol 25 (1) ◽  
Author(s):  
NSA Derkyi ◽  
H Bailleres ◽  
G Chaix ◽  
MF Thevenon ◽  
AA Oteng-Amoako ◽  
...  
Keyword(s):  
Tectona Grandis ◽  
Colour Variation ◽  
Ecological Zones

scholarly journals Wood physical properties, color, decay resistance and stiffness in Tectona grandis clones with evidence of genetic control

2013 ◽  
Vol 62 (1-6) ◽  
pp. 142-152 ◽  
Author(s):  
R. Moya ◽  
J. D. Marín ◽  
O. Murillo ◽  
L. Leandro
Keyword(s):  
Clonal Selection ◽  
Tectona Grandis ◽  
Wood Properties ◽  
Decay Resistance ◽  
Clonal Variation ◽  
Blue Color ◽  
Limited Information ◽  
Pycnoporus Sanguineus ◽  
Radial Shrinkage ◽  
Improvement Programs

AbstractTectona grandis (teak) plantations are being produced with trees from genetic improvement programs, including clonal selection. However, limited information about inheritance of wood properties is available. For studying genetic parameters of T. grandis wood properties and stem diameter two 10-yr-old trials were studied involving nominally 2 sites × 20 clones × 3 replicates × 1 ramet. Clonal variation was observed in: heartwood (HWP), pith (PP) and bark (BP) percentages; green moisture content (IMC) and density (GD); tangential (TS), radial (RS) and volumetric (VS) shrinkage and ratio tangential/radial: shrinkage (ratio T/R); L*a*b* color parameters; and stiffness and specify gravity (SG). Some wood properties evidenced strong across-sites genotypic control. The higher broad-sense heritability estimates (over 0.36) were for PP, IMC, SG, TS, VS and L*, a*, and b* color coordinates and stiffness. Low and non-significant values were estimated for HWP, BP, GD, RS, ratio T/R and decay resistance of sapwood and heartwood to Trametes versicolor and Pycnoporus sanguineus. However, HWP showed marked clone x site interaction. Phenotypic and tentatively estimated genotypic correlations indicate that selecting faster-growing clones will improve some important wood properties, such as increasing HWP, and decreasing PP and BP, without affecting other wood properties. Selecting clones for denser wood, as expected, improved stiffness, should decrease IMC and affect negatively b* (yellow/blue) color. Clone selection with lower L* values could increase redness (a*) of wood.

scholarly journals Decay resistance of Togolese teak (Tectona grandis L.f) heartwood and relationship with colour

Trees ◽  
2006 ◽  
Vol 20 (3) ◽  
pp. 403-403
Author(s):  
Adzo Dzifa Kokutse ◽  
Alexia Stokes ◽  
Henri Baillères ◽  
Kouami Kokou ◽  
Christine Baudasse
Keyword(s):  
Tectona Grandis ◽  
Decay Resistance ◽  
Tectona Grandis L.F

Decay resistance of Togolese teak (Tectona grandis L.f) heartwood and relationship with colour

Trees ◽  
2006 ◽  
Vol 20 (2) ◽  
pp. 219-223 ◽  
Author(s):  
Adzo Dzifa Kokutse ◽  
Alexia Stokes ◽  
Henri Baillères ◽  
Kouami Kokou ◽  
Christine Baudasse
Keyword(s):  
Tectona Grandis ◽  
Decay Resistance ◽  
Tectona Grandis L.F

scholarly journals Decay resistance inDicorynia guianensisAmsh.: analysis of inter-tree and intra-tree variability and relations with wood colour

2004 ◽  
Vol 61 (4) ◽  
pp. 373-380 ◽  
Author(s):  
Nadine Amusant ◽  
Jacques Beauchene ◽  
Mériem Fournier ◽  
Gérard Janin ◽  
Marie-France Thevenon
Keyword(s):  
Decay Resistance ◽  
Wood Colour

Influence of anatomy on the adhesion performance of four wood species

2020 ◽  
Vol 9 (4) ◽  
pp. e31942727
Author(s):  
João Gabriel Missia da Silva ◽  
Pedro Nicó de Medeiros ◽  
Denise Ransolin Soranso ◽  
Vinicius Peixoto Tinti ◽  
José Tarcísio da Silva Oliveira ◽  
...  
Keyword(s):  
Shear Strength ◽  
Specific Gravity ◽  
Wood Species ◽  
Tectona Grandis ◽  
Glue Line ◽  
Anatomical Characteristics ◽  
Ray Cells ◽  
Adhesion Performance ◽  
Adhesion Process

The aim of this study was to evaluate the influence of anatomical characteristics on the adhesion performance of Vatairea sp., Paulownia sp., Aspidosperma populifolium and Tectona grandis wood. Specimens for anatomical, physical and mechanical analyzes were produced from tangentially oriented boards. The treatments were joint glued from pieces of the same anatomical orientation (radial and tangential), evaluated for shear strength and glue line failure. The Vatairea sp wood had the highest specific gravity (0.74 g cm-3) and the Paulownia sp (0.34 g cm-3) wood was smaller. Aspidosperma populifolium species showed the highest shear strength in the glue line in the tangential and radial faces. The anatomical variables with higher influence on the wood adhesion process were pith ray cells and especially fibers that exhibit the greatest correlation with the shear strength of the glue line.

Gloger’s ecogeographical rule and colour variation among Willow Tits Parus montanus

2009 ◽  
Vol 32 (0) ◽  
pp. 49 ◽  
Author(s):  
Olav Hogstad ◽  
Per Gustav Thingstad ◽  
Daverdin Marc
Keyword(s):  
Colour Variation ◽  
Parus Montanus
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