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Estimates of genetic parameters of wood traits for sawn timber production in Eucalyptus grandis Genet. Mol. Biol.
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
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Eucalyptus Subgenus Symphyomyrtus: Sections: Exsertaria, Latoangulatae and Maidenaria Scientia Agricola
Scanavaca Júnior,Laerte; Garcia,José Nivaldo.
ABSTRACT: Eucalypts are the most planted hardwood in the world, with 30 million ha. under cultivation. There are approximately 700 species of eucalypts, but more than 90 % of the plantations are concentrated in nine species of the Subgenus Symphyomyrtus in the Sections Exsertaria, Latoangulatae and Maidenaria. Since 2000, with the advancement of biotechnology, many species have been reclassified and regrouped according to their morphological and physiological characteristics, DNA structure and geographic distribution. This work had as its objective the formulation of a critical analysis which presents the main characteristics that will identify the species of Eucalyptus of these new sections. The species are classified mainly according to geographic...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Eucalyptus; Connexentes; Transversae; Globulares; Viminales.
Ano: 2021 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162021000701001
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