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Registro Completo |
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Biblioteca(s): |
Embrapa Florestas. |
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Data corrente: |
08/07/1993 |
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Data da última atualização: |
08/07/1993 |
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Autoria: |
REZENDE, J. L. P. de; VITAL, B. R.; TAVARES, M. F. R.; PAULA JUNIOR, G. G. de. |
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Título: |
Analise tecnica e economica do desdobro de toras de Pinus. |
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Ano de publicação: |
1992 |
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Fonte/Imprenta: |
Revista Arvore, Vicosa, v.16, n.2, p.181-193, maio/ago. 1992. |
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ISSN: |
0100-6762 |
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Idioma: |
Português |
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Conteúdo: |
Este trabalho teve como objetivo a analise de cinco estruturas de corte para toras de Pinus elliottii, classificadas em tres classes de diametro (14,0 a 19.0; 19,5 a 24,5 e 25,0 a 30,0), visando maximizar os lucros de uma serraria. Empregou-se programacao linear para a analise tecnico-economica dos dados. A analise consistiu na confrontacao dos lucros obtidos com a aplicacao de cada estrutura de corte sobre as tres classes de diametro. Concluiu-se que o retorno economico da industria de serraria aumenta quando se emprega especifica estrutura de corte para cada classe de diametro. O maximo lucro foi obtido produzindo-se tabuas com 2,5 cm de espessura e 20,0 cm de largura, bem como tabuas com 2,5 cm de espessura e de maxima largura possivel, das sobras de toras com 25,0 a 30,0 cm de diametro. Essa classe de diametro proporcionou, tambem, maximo lucro para todas as estruturas de corte. Melhor desempenho economico foi obtido com a estrutura de corte que produzia pontaletes (7,5 x 7,5 cm) somente na parte central das toras e as demais partes em pecas de 2,5 cm de espessura e de maxima largura possivel. |
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Palavras-Chave: |
Cut; Logs. |
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Thesagro: |
Corte; Tora. |
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Thesaurus Nal: |
Pinus. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01698naa a2200229 a 4500
001 1284975
005 1993-07-08
008 1992 bl uuuu u00u1 u #d
022 $a0100-6762
100 1 $aREZENDE, J. L. P. de
245 $aAnalise tecnica e economica do desdobro de toras de Pinus.
260 $c1992
520 $aEste trabalho teve como objetivo a analise de cinco estruturas de corte para toras de Pinus elliottii, classificadas em tres classes de diametro (14,0 a 19.0; 19,5 a 24,5 e 25,0 a 30,0), visando maximizar os lucros de uma serraria. Empregou-se programacao linear para a analise tecnico-economica dos dados. A analise consistiu na confrontacao dos lucros obtidos com a aplicacao de cada estrutura de corte sobre as tres classes de diametro. Concluiu-se que o retorno economico da industria de serraria aumenta quando se emprega especifica estrutura de corte para cada classe de diametro. O maximo lucro foi obtido produzindo-se tabuas com 2,5 cm de espessura e 20,0 cm de largura, bem como tabuas com 2,5 cm de espessura e de maxima largura possivel, das sobras de toras com 25,0 a 30,0 cm de diametro. Essa classe de diametro proporcionou, tambem, maximo lucro para todas as estruturas de corte. Melhor desempenho economico foi obtido com a estrutura de corte que produzia pontaletes (7,5 x 7,5 cm) somente na parte central das toras e as demais partes em pecas de 2,5 cm de espessura e de maxima largura possivel.
650 $aPinus
650 $aCorte
650 $aTora
653 $aCut
653 $aLogs
700 1 $aVITAL, B. R.
700 1 $aTAVARES, M. F. R.
700 1 $aPAULA JUNIOR, G. G. de
773 $tRevista Arvore, Vicosa$gv.16, n.2, p.181-193, maio/ago. 1992.
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Registro original: |
Embrapa Florestas (CNPF) |
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Registro |
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Registro Completo
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Biblioteca(s): |
Embrapa Pecuária Sul. |
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Data corrente: |
25/09/2018 |
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Data da última atualização: |
26/09/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
GUSTINA, L. D.; BALDONI, A. B.; TONINI, H.; AZEVEDO, V. C. R.; NEVES, L. G.; TARDIN, F. D.; SEBBENN, A. M. |
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Afiliação: |
Universidade Federal de Mato Grosso; AISY BOTEGA BALDONI TARDIN, CPAMT; HELIO TONINI, CPPSUL; VANIA CRISTINA RENNO AZEVEDO, Cenargen; Universidade do Estado de Mato Grosso; FLAVIO DESSAUNE TARDIN, CNPMS; Instituto Florestal de São Paulo. |
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Título: |
Hierarchical outcrossing among and within fruits in Bertholletia excelsa Bonpl. (Lecythidaceae) open-pollinated seeds. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Genetics and Molecular Research, v. 17, n. 1, p. 1-11, 2018. |
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Idioma: |
Inglês |
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Notas: |
Article gmr16039872. |
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Conteúdo: |
Knowing the mating patterns is important to determine the number of trees necessary for seed collection for conservation ex situ, tree breeding and environmental reforestation purposes. We investigated B. excelsa individuals and fruits, to check mating system index variations in a population by using open-pollinated seeds which were hierarchically sampled within and among fruits from nine trees genotyped for ten microsatellite loci. Outcrossing rate ( tm ) changed between trees (0.49?1.0) and fruits (0.53?1.0), but seeds were predominantly produced by outcrossing (0.92) at mean population level. Mating between related trees ( tm ts ) was detected in six trees (0.04?0.08) and in 32 fruits in trees (0.03?0.22), thus it suggests that the population presented some related trees in our intra-population spatial genetic structure. Individual fixation index values of seed trees ( Fm ) were lower than the seedling fixation index values ( o F ), fact that suggests the selection against inbred individuals between the seed and adult stages. The correlated mating showed that seeds sampled at population level were predominantly composed of half-sibs (66%) and full-sibs (20%). Paternity correlation was significantly higher within (p(w) r ) than among ( p(a) r ) fruits at population level, mostly in individual trees. Results evidenced that mating was not random due to self-fertilization, to mating between related trees and correlated mating, and families comprised different relatedness levels such as half-sibs, full-sibs, self-sibs and self-half-sibs; some cases, mating presented inbreeding. These results were addressed to discuss strategies for seed collection applied to conservation ex situ, tree breeding and environmental reforestation. MenosKnowing the mating patterns is important to determine the number of trees necessary for seed collection for conservation ex situ, tree breeding and environmental reforestation purposes. We investigated B. excelsa individuals and fruits, to check mating system index variations in a population by using open-pollinated seeds which were hierarchically sampled within and among fruits from nine trees genotyped for ten microsatellite loci. Outcrossing rate ( tm ) changed between trees (0.49?1.0) and fruits (0.53?1.0), but seeds were predominantly produced by outcrossing (0.92) at mean population level. Mating between related trees ( tm ts ) was detected in six trees (0.04?0.08) and in 32 fruits in trees (0.03?0.22), thus it suggests that the population presented some related trees in our intra-population spatial genetic structure. Individual fixation index values of seed trees ( Fm ) were lower than the seedling fixation index values ( o F ), fact that suggests the selection against inbred individuals between the seed and adult stages. The correlated mating showed that seeds sampled at population level were predominantly composed of half-sibs (66%) and full-sibs (20%). Paternity correlation was significantly higher within (p(w) r ) than among ( p(a) r ) fruits at population level, mostly in individual trees. Results evidenced that mating was not random due to self-fertilization, to mating between related trees and correlated mating, and families comprised different related... Mostrar Tudo |
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Thesagro: |
Árvore; Bertholletia Excelsa; Castanha do Para; Conservação; Genética; Marcador Genético; Melhoramento; Polinização; Semente. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/183522/1/2018-aisy-baldoni-hierarchical-outcrossing-fruits-bertholletia-pollinated.pdf
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Marc: |
LEADER 02675naa a2200313 a 4500
001 2096231
005 2018-09-26
008 2018 bl --- 0-- u #d
100 1 $aGUSTINA, L. D.
245 $aHierarchical outcrossing among and within fruits in Bertholletia excelsa Bonpl. (Lecythidaceae) open-pollinated seeds.$h[electronic resource]
260 $c2018
500 $aArticle gmr16039872.
520 $aKnowing the mating patterns is important to determine the number of trees necessary for seed collection for conservation ex situ, tree breeding and environmental reforestation purposes. We investigated B. excelsa individuals and fruits, to check mating system index variations in a population by using open-pollinated seeds which were hierarchically sampled within and among fruits from nine trees genotyped for ten microsatellite loci. Outcrossing rate ( tm ) changed between trees (0.49?1.0) and fruits (0.53?1.0), but seeds were predominantly produced by outcrossing (0.92) at mean population level. Mating between related trees ( tm ts ) was detected in six trees (0.04?0.08) and in 32 fruits in trees (0.03?0.22), thus it suggests that the population presented some related trees in our intra-population spatial genetic structure. Individual fixation index values of seed trees ( Fm ) were lower than the seedling fixation index values ( o F ), fact that suggests the selection against inbred individuals between the seed and adult stages. The correlated mating showed that seeds sampled at population level were predominantly composed of half-sibs (66%) and full-sibs (20%). Paternity correlation was significantly higher within (p(w) r ) than among ( p(a) r ) fruits at population level, mostly in individual trees. Results evidenced that mating was not random due to self-fertilization, to mating between related trees and correlated mating, and families comprised different relatedness levels such as half-sibs, full-sibs, self-sibs and self-half-sibs; some cases, mating presented inbreeding. These results were addressed to discuss strategies for seed collection applied to conservation ex situ, tree breeding and environmental reforestation.
650 $aÁrvore
650 $aBertholletia Excelsa
650 $aCastanha do Para
650 $aConservação
650 $aGenética
650 $aMarcador Genético
650 $aMelhoramento
650 $aPolinização
650 $aSemente
700 1 $aBALDONI, A. B.
700 1 $aTONINI, H.
700 1 $aAZEVEDO, V. C. R.
700 1 $aNEVES, L. G.
700 1 $aTARDIN, F. D.
700 1 $aSEBBENN, A. M.
773 $tGenetics and Molecular Research$gv. 17, n. 1, p. 1-11, 2018.
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Embrapa Pecuária Sul (CPPSUL) |
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