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ENVIRONMENTAL EFFECT ON CHEMICAL COMPOSITION OF EUCALYPTUS CLONES WOOD FOR PULP PRODUCTION

CERNE, 2018-09, Vol.24 (3), p.219-224 [Peer Reviewed Journal]

This work is licensed under a Creative Commons Attribution 4.0 International License. ;ISSN: 0104-7760 ;ISSN: 2317-6342 ;EISSN: 0104-7760 ;DOI: 10.1590/01047760201824032558

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  • Title:
    ENVIRONMENTAL EFFECT ON CHEMICAL COMPOSITION OF EUCALYPTUS CLONES WOOD FOR PULP PRODUCTION
  • Author: Freitas, Thaís Pereira ; Oliveira, José Tarcísio da Silva ; Vidaurre, Graziela Baptista ; Rodrigues, Brunela Pollastrelli
  • Subjects: FORESTRY
  • Is Part Of: CERNE, 2018-09, Vol.24 (3), p.219-224
  • Description: ABSTRACT This study aimed to evaluate the environmental effect on the wood chemical composition of Eucalyptus grandis x Eucalyptus urophylla clones for pulp production. Seven clones of 6.5 years old were evaluated. The clones were planted in two growing sites, Nova Almeida - Espírito Santo and Posto da Mata - Bahia, established in 3 x 3 m spacing. Five trees were selected from each clone and discs were removed from five different positions equidistant from the trunk and at diameter at breast height (DBH) height. Two wedge from opposite sides were obtained from the discs. A chemical analysis was performed with a sample composed of all the wedges of each tree in order to determine extractive contents, lignin, holocellulose, carbohydrates and the ratio among syringyl (S) and guaiacyl (G) lignin substructures (S/G) per tree. The S/G ratio was considered to be the most stable characteristic to environmental change, followed by the holloceluloose content, which was considered the second least characteristic influenced by the growth site. Most of the studied clones presented a statistical difference between the growing site for the wood extractive content, in contrast to the total carbohydrates content that was highlighted by presenting values which were little influenced by the genetic material and the growth site.
  • Publisher: UFLA - Universidade Federal de Lavras
  • Language: English;Portuguese
  • Identifier: ISSN: 0104-7760
    ISSN: 2317-6342
    EISSN: 0104-7760
    DOI: 10.1590/01047760201824032558
  • Source: SciELO
    Alma/SFX Local Collection
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