|
|
|
|
|
| Bison,Odair; Ramalho,Magno Antonio Patto; Rezende,Gabriel Dehon Sampaio Peçanha; Aguiar,Aurélio Mendes; Resende,Marcos Deon Vilela de. |
| In Brazil, eucalyptus breeding programs for cellulose production has used two species, Eucalyptus grandis and Eucalyptus urophylla. Nevertheless, it would be useful to introgress alleles from other species to improve wood quality and volume. The objective of this research was to evaluate the hybrid potential of elite clones of E. grandis and E. urophylla from the Aracruz Celulose Company S. A. with Eucalyptus globulus clones. To do so, six elite clones were crossed with ten E. globulus clones in a half-diallel mating design. The resulting hybrid combinations as well as the four check clones were evaluated in randomized complete block experiments with single plant plots and 40 replicates from September to October 2001 at three Brazilian sites, Aracruz and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diallel; Eucalyptus breeding; Hybrids; Quantitative genetics; Wood quality. |
| Ano: 2007 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000300019 |
| |
|
|
| Santos,Paulo Eduardo Telles dos; Geraldi,Isaias Olívio; Garcia,José Nivaldo. |
| In this study, the breeding perspectives of 41 open-pollinated progenies of Eucalyptus grandis were evaluated based on their wood traits. The progenies were distributed in two experiments in a randomized complete block design, with three replicates and linear plots containing six plants each. The traits were assessed at eight years of age. Two trees from each plot were selected for this assessment based on better growth, stem form and phytosanity. Significant differences in basic density, sapwood/heartwood ratio, bowing, specific gravity, parallel compression and static bending were detected among the progenies. These traits were potentially promising for breeding programs, with heritability coefficients that varied from 0.34 to 0.61 on a progeny mean... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Breeding; Eucalypt; Genetic parameters; Wood quality. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572004000400017 |
| |
|
|
| SILVEIRA,AMANDA G. DA; SANTINI,ELIO J.; KULCZYNSKI,STELA M.; TREVISAN,RÔMULO; WASTOWSKI,ARCI D.; GATTO,DARCI A.. |
| ABSTRACT High toxicity of the preservatives most frequently used in wood treatment and the resulting risks of handling pose a threat to small producers and to the environment. In an attempt to mitigate these problems, the present study was conducted with the objective of evaluating the preservative effect of tannic extract on biodeterioration of Acacia mearnsii wood. For this purpose, untreated and preserved specimens, some with tannin extract and some with a preservative mixture based on CCB (Chromated Copper Borate), were submitted to accelerated rotting trials with the fungus that causes white rot (Pycnoporus sanguineus) for 16 weeks. The evaluations were made with a basis on weight loss and chemical components analysis, and they showed that the natural... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Extractives; Laboratory testing; Wood quality; White rot. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000603031 |
| |
|
|
| Trevisan,Rômulo; Zanella,Alexandre; Silva,Fernanda Marques da; Rosa,Magda; Fioresi,Tamires; Fortes,Fabiano de Oliveira. |
| ABSTRACT: The study of the wood characteristics is of fundamental importance for the correct use of this raw material and, among its properties, the basic density is a major, being reference in the quality of this material. This study aimed to evaluate the axial variation of basic density of the wood of Araucaria angustifolia (Bertoloni) O. Kuntze in different diameter classes. For this, three trees were selected in six diameter classes, called class 1 (20-30cm), class 2 (30.1-40cm), class 3 (40.1-50cm), class 4 (50.1-60cm), class 5 (60.1-70cm) and class 6 (70.1-80cm). From each individual sampled was withdrawn a disc at 0.1m (base), 25, 50, 75 and 100% of the height of the first live branch and in the diameter at 1.30m from the ground (DBH), which were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazilian Pine; Wood technological characteristic; Wood quality. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016001101969 |
| |
|
|
|
