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| Format: | Artículo científico |
| Language: | en |
| Published: |
Universidade Federal de Lavras
2018
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| Online Access: | https://www.redalyc.org/articulo.oa?id=74460167007 https://www.redalyc.org/journal/744/74460167007/ https://www.redalyc.org/journal/744/74460167007/html/ https://www.redalyc.org/journal/744/74460167007/74460167007.epub https://www.redalyc.org/journal/744/74460167007/movil |
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Table of Contents:
- ENVIRONMENTAL EFFECT ON CHEMICAL COMPOSITION OF EUCALYPTUS CLONES WOOD FOR PULP PRODUCTION Thaís Pereira Freitas José Tarcísio da Silva Oliveira Graziela Baptista Vidaurre Brunela Pollastrelli Rodrigues Agrociencias Growth site Wood quality Genetic material 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. 2018 artículo científico 0104-7760 https://www.redalyc.org/articulo.oa?id=74460167007 https://www.redalyc.org/journal/744/74460167007/ https://www.redalyc.org/journal/744/74460167007/html/ https://www.redalyc.org/journal/744/74460167007/74460167007.epub https://www.redalyc.org/journal/744/74460167007/movil 10.1590/01047760201824032558 en http://www.redalyc.org/revista.oa?id=744 CERNE application/pdf Universidade Federal de Lavras CERNE (Brasil) Num.3 Vol.24