Seleção precoce para incremento simultâneo do crescimento e da qualidade da madeira em Pinus taeda L.

Authors

  • Estefano Paludzyszyn Filho Embrapa Florestas
  • Vanilda R. S. Shimoyama Norske-Skog
  • Admir Lopes Mora Norske-Skog

Keywords:

Juvenile-mature correlation, Genetic gain, Tree breeding, Genetic correlation

Abstract

The objective of this work was to study the efficiency of the early selection of parents and progeny for simultaneous increment of the growth and wood quality. For this, 48 open-pollinated families of Pinus taeda were grown at close spacing (0,5m x 0,5m). At the age of 16 months they were assessed for stem diameter at 30 cm above the ground and for wood basic density. The data were compared to diameter at breast height and basic density of commercial stem of the same progenies at 84 months under field conditions. Phenotypic and genetic parameters were estimated using an individual tree model. The narrow sense heritabilities in the 16º and 84º month for diameter (h2 = 0,24 e 0,22) and density (h2 = 0,27 e 0,19) suggest that they are inherited. The aditive genetic age-age correlations were highly for diameter (r2 = 0,90) and for basic density (r2 = 0,86) indicating that growth and basic density at maturity could be improved by early selection of the same growth and quality trait. Trait-trait correlations indicated that genetic correlations between diameter and wood basic density were negative and high indicating difficulties for simultaneous genetic gain by selection. Efficiencies of early selection indicated similar efficiency for the same trait at 84 months. To improve volume and quality of wood nine parents were selected by aditive genetic breeding values at the two ages. This allows to conclude that early evaluation of progeny grown in close-spacing in a nursery field is a useful methodology to increase genetic gains in an generation by increasing the probability of selecting genotypes that favor simultaneously wood quality and growth traits.

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References

ADAMS, W. T.; AITKEN, S. N.; JOYCE, D. G.; HOWE, G. T.; VARGAS-HERNANDEZ, J. Evaluating efficacy of early testing for stem growth in Coastal Douglas-fir. Silvae Genética, v. 50, n. 3-4, p. 167-175, 2001.
BALOCCHI, C. E.; BRIDGWATER, F. E.; BRYANT, R. Selection efficiency for a non-selected population of loblolly pine. Forest Science, v. 40, n. 3, p. 452-473, 1994.
BELONGER, P. J. Variation of selected juvenile wood properties in four southern provenance of loblolly pine. Raleigh: Dept. Forestry, North Carolina State University, 1998. 145 p. Ph.D. Thesis.
BRIDGWATER, F. E.; McKEAND, S. E. Early family evaluation for growth of loblolly pine. Forest Genetics, v. 4, n. 1, p. 51-58, 1997.
BRIDGWATER, F. E.; TALBERT, J. T.; JAHROMI, S. Index selection for increased dry weight in a young loblolly pine population. Silvae Genetica, v. 32, n. 5-6, p. 157-163, 1983.
CORNELIUS, J. Heritabilities and additive genetic coefficients of variation in forest trees. Canadian Journal of Forest Research, v. 24, p. 372-379, 1994.
DOBSON, A. J. An introduction to generalized linear models. Melbourne: Chapman & Hall, 1990. 174 p.
FALCONER, D. S. Introduction to quantitative genetics. 3rd ed. Longman: Harlow, 1989. 438 p.
FONSECA, S. M.; KAGEYAMA, P. Y.; FERREIRA, M.; JACOB, W. S. Programa conjunto de melhoramento genético e produção de sementes de Pinus taeda na Região Sul do Brasil. Boletim Informativo IPEF, Piracicaba, v. 6, n. 48, p. 61-73, 1980.
GWAZE, D. P.; BRIDGWATER, F. E.; BYRAM, T. D.; LOWE, W. J. Genetic parameter estimates for growth and wood density in loblolly pine (Pinus taeda L.). Forest Genetics, v. 8, n. 1, p. 47-55, 2001.
GWAZE, D. P.; WOOLLIAMS, J. A.; KANOWSKI, P. J. Optimum selection age for height in Pinus taeda L. in Zimbabwe. Silvae Genetica, v. 46, n. 6, p. 358-365, 1997.
HARDING, K. J. Age trends of genetic parameters for wood properties of loblolly pine. Raleigh: Dept. Forestry, North Carolina State University, 1995. 120 p. Ph.D. Thesis.
LOO, J. A.; TAUER, C. G.; BUIJTENEN, J. P. van. Juvenile-mature relationships and heritability estimates of several traits in loblolly pine (Pinus taeda). Canadian Journal of Forest Research, v. 14, p. 822-825, 1984.
McKEAND, S. E. Optimum age for family selection for growth in genetic tests of loblolly pine. Forest Science, v. 34, n. 2, p. 400-411, 1988.
McKEAND, S. E.; ERICKSSON, G.; ROBERDS, J. H. Genotype by environment interaction for index traits that combine growth and wood density in loblolly pine. Theoretical and Applied Genetics , v. 94, p. 1015-1022, 1997.
MEGRAW, R. A. Wood quality factors in loblolly pine: the influence of tree age, position in tree, and cultural practice on wood specific gravity, fiber length, and fibril angle. Atlanta: Tappi Press, 1985. 88 p.
MEYER, K. DFREML: version 3.0b. user notes. Armindale: Institute of Animal Genetics of Edinburgh: Animal Genetics and Breeding Unit of the University of New England, 1998. 31 p.
RESENDE, M. D. V. de; Análise estatística de modelos mistos via REML/BLUP na experimentação em melhoramento de plantas perenes. Colombo: Embrapa Florestas, 2000. 101 p. (Embrapa Florestas. Documentos, 47).
RESENDE, M. D. V. de; FERNANDES, J. S. C. Procedimento BLUP individual para delineamentos experimentais aplicados ao melhoramento florestal. Revista de Matemática e Estatística, São Paulo, v. 17, p. 89-107, 1999.
RESENDE, M. D. V. de; FERNANDES, J. S. C.; SIMEÃO, R. M. BLUP individual multivariado em presença de interação genótipo x ambiente para delineamentos experimentais repetidos em vários ambientes. Revista de Matemática e Estatística, São Paulo, v. 17, p. 209-228, 1999.
SCHAEFFER, L. R. Linear models. Disponível em: <http://www.aps.uoguelph.ca /~lrs/Animalz/lesson8/>. Acesso em: 12 maio 1999.
VARGAS HERNANDEZ, J.; ADAMS, W. T. Age-age correlations and early selection for wood density in young coastal Douglas Fir. Forest Science, v. 38, n. 2, p. 467-478, 1992.
WILLIAMS, C. G.; MEGRAW, R. A. Juvenile-mature relationship for wood density in Pinus taeda. Canadian Journal of Forest Research, v. 24, p. 714-722, 1994.
WOODS, J. H.; KOLOTELO, D.; YANCHUK, A. D. Early selection of coastal Douglas-Fir in a farm-field test environment. Silvae Genetica, v. 44, n. 4, p. 178-186, 1995.
WU, H. X. Study of early selection in tree breeding - 1. Advantage of early selection through increase of selection intensity and reduction of field test size. Silvae Genetica, v. 47, p. 2-3, 1998.
ZOBEL, B. J.; BUIJTENEN, J. P. van. Wood variation: its cause and control. Berlin: Springer-Verlag, 1989. 363 p.
ZOBEL, B. J.; JETT, J. B. Genetics of wood production. Berlin: Springer-Verlag,1 995. 337 p.

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Published

2003-06-30

How to Cite

PALUDZYSZYN FILHO, Estefano; SHIMOYAMA, Vanilda R. S.; MORA, Admir Lopes. Seleção precoce para incremento simultâneo do crescimento e da qualidade da madeira em Pinus taeda L. Pesquisa Florestal Brasileira, [S. l.], n. 46, p. 31–46, 2003. Disponível em: https://pfb.cnpf.embrapa.br/pfb/index.php/pfb/article/view/1616. Acesso em: 17 may. 2024.

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No. 46 (2003): jan./jun.

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