Overview of the teak silviculture in Brazil and perspectives for genetic improvement O cenário nacional da silvicultura de teca (Tectona grandis L. f.) e perspectivas de melhoramento
<p>The teak (<em>Tectona grandis</em> L. f.) wood properties direct an intense process of domestication and plantation outside its original habitat. The interest in the species as an alternative for the traditional forest plantations in Brazil is growing. Th...
| Main Authors: | , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Embrapa Florestas
2010-12-01
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| Series: | Pesquisa Florestal Brasileira |
| Subjects: | |
| Online Access: | http://www.cnpf.embrapa.br/pfb/index.php/pfb/article/view/84 |
| _version_ | 1831737216805634048 |
|---|---|
| author | Guilherme Schnell e Schuhli Estefano Paludzyszyn Filho |
| author_facet | Guilherme Schnell e Schuhli Estefano Paludzyszyn Filho |
| author_sort | Guilherme Schnell e Schuhli |
| collection | DOAJ |
| description | <p>The teak (<em>Tectona grandis</em> L. f.) wood properties direct an intense process of domestication and plantation outside its original habitat. The interest in the species as an alternative for the traditional forest plantations in Brazil is growing. This review contributes with the recovery of technical and scientific information regarding teak aiming the subsequent proposition of a genetic breeding program. In this paper it is presented a brief review of the silvicultural methods for the species in Brazil. The positive perspectives and the main risks related to the teak plantation were explored. In general, in the most recent genetic improvement programs the employment of clones was a common strategy. The initial emphasis of the improvement programs were the growth rate and wood property (generally density). As for other species the proper choice of the selection methods resides in observing the genetic variances (additive and non-additive), herdability (broad and narrow), and the genetic correlations among characters. As in other forest breeding programs the conversion of progeny tests in seedling seed orchards is common for a faster seed production and development of commercial clones<br />or clonal seed orchards.</p><p>doi: 10.4336/2010.pfb.30.63.217</p><br><p>As propriedades da madeira de teca (<em>Tectona grandis </em>L. f) regem um intenso processo de domesticação e cultivo em regiões além de seu habitat natural. O interesse na espécie como alternativa aos plantios florestais tradicionais no Brasil vem crescendo. Esta revisão contribui com o processo de resgate da informação técnicocientífica sobre a teca com vistas à elaboração de um programa de melhoramento. Neste documento, é apresentada uma breve revisão sobre os métodos silviculturais para a espécie no Brasil. Foram explorados aspectos positivos inerentes ao cultivo assim como os principais riscos. De forma geral, verificou-se que os programas recentes de melhoramento genético concentraram-se no desenvolvimento de clones. A ênfase inicial dos programas de melhoramento tem sido a taxa de crescimento e propriedades da madeira (geralmente densidade). Para a aplicação e escolha dos métodos de seleção em teca são importantes as variâncias genéticas aditivas e não aditivas, as herdabilidades no sentido restrito e amplo, e as correlações genéticas entre caracteres. Como em outros programas de melhoramento florestal, é comum a conversão de testes de progênies em pomares de sementes para a produção mais rápida de clones comerciais ou de pomares clonais de sementes.</p><p><!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:HyphenationZone>21</w:HyphenationZone> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>PT-BR</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:DontVertAlignCellWithSp /> <w:DontBreakConstrainedForcedTables /> 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| first_indexed | 2024-12-21T12:58:38Z |
| format | Article |
| id | doaj.art-26fb8c829551453ead963065f4d882a5 |
| institution | Directory Open Access Journal |
| issn | 1809-3647 1983-2605 |
| language | English |
| last_indexed | 2024-12-21T12:58:38Z |
| publishDate | 2010-12-01 |
| publisher | Embrapa Florestas |
| record_format | Article |
| series | Pesquisa Florestal Brasileira |
| spelling | doaj.art-26fb8c829551453ead963065f4d882a52022-12-21T19:03:15ZengEmbrapa FlorestasPesquisa Florestal Brasileira1809-36471983-26052010-12-01306310.4336/2012.pfb.63.217Overview of the teak silviculture in Brazil and perspectives for genetic improvement O cenário nacional da silvicultura de teca (Tectona grandis L. f.) e perspectivas de melhoramentoGuilherme Schnell e SchuhliEstefano Paludzyszyn Filho<p>The teak (<em>Tectona grandis</em> L. f.) wood properties direct an intense process of domestication and plantation outside its original habitat. The interest in the species as an alternative for the traditional forest plantations in Brazil is growing. This review contributes with the recovery of technical and scientific information regarding teak aiming the subsequent proposition of a genetic breeding program. In this paper it is presented a brief review of the silvicultural methods for the species in Brazil. The positive perspectives and the main risks related to the teak plantation were explored. In general, in the most recent genetic improvement programs the employment of clones was a common strategy. The initial emphasis of the improvement programs were the growth rate and wood property (generally density). As for other species the proper choice of the selection methods resides in observing the genetic variances (additive and non-additive), herdability (broad and narrow), and the genetic correlations among characters. As in other forest breeding programs the conversion of progeny tests in seedling seed orchards is common for a faster seed production and development of commercial clones<br />or clonal seed orchards.</p><p>doi: 10.4336/2010.pfb.30.63.217</p><br><p>As propriedades da madeira de teca (<em>Tectona grandis </em>L. f) regem um intenso processo de domesticação e cultivo em regiões além de seu habitat natural. O interesse na espécie como alternativa aos plantios florestais tradicionais no Brasil vem crescendo. Esta revisão contribui com o processo de resgate da informação técnicocientífica sobre a teca com vistas à elaboração de um programa de melhoramento. Neste documento, é apresentada uma breve revisão sobre os métodos silviculturais para a espécie no Brasil. Foram explorados aspectos positivos inerentes ao cultivo assim como os principais riscos. De forma geral, verificou-se que os programas recentes de melhoramento genético concentraram-se no desenvolvimento de clones. A ênfase inicial dos programas de melhoramento tem sido a taxa de crescimento e propriedades da madeira (geralmente densidade). Para a aplicação e escolha dos métodos de seleção em teca são importantes as variâncias genéticas aditivas e não aditivas, as herdabilidades no sentido restrito e amplo, e as correlações genéticas entre caracteres. Como em outros programas de melhoramento florestal, é comum a conversão de testes de progênies em pomares de sementes para a produção mais rápida de clones comerciais ou de pomares clonais de sementes.</p><p><!--[if gte mso 9]><xml> <w:WordDocument> <w:View>Normal</w:View> <w:Zoom>0</w:Zoom> <w:TrackMoves /> <w:TrackFormatting /> <w:HyphenationZone>21</w:HyphenationZone> <w:PunctuationKerning /> <w:ValidateAgainstSchemas /> <w:SaveIfXMLInvalid>false</w:SaveIfXMLInvalid> <w:IgnoreMixedContent>false</w:IgnoreMixedContent> <w:AlwaysShowPlaceholderText>false</w:AlwaysShowPlaceholderText> <w:DoNotPromoteQF /> <w:LidThemeOther>PT-BR</w:LidThemeOther> <w:LidThemeAsian>X-NONE</w:LidThemeAsian> <w:LidThemeComplexScript>X-NONE</w:LidThemeComplexScript> <w:Compatibility> <w:BreakWrappedTables /> <w:SnapToGridInCell /> <w:WrapTextWithPunct /> <w:UseAsianBreakRules /> <w:DontGrowAutofit /> <w:SplitPgBreakAndParaMark /> <w:DontVertAlignCellWithSp /> <w:DontBreakConstrainedForcedTables /> 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Heading" /> </w:LatentStyles> </xml><![endif]--></p><p>doi: 10.4336/2010.pfb.30.63.217</p>http://www.cnpf.embrapa.br/pfb/index.php/pfb/article/view/84Brasil, espécies exóticas, Tectona grandis, programa de melhoramente |
| spellingShingle | Guilherme Schnell e Schuhli Estefano Paludzyszyn Filho Overview of the teak silviculture in Brazil and perspectives for genetic improvement O cenário nacional da silvicultura de teca (Tectona grandis L. f.) e perspectivas de melhoramento Pesquisa Florestal Brasileira Brasil, espécies exóticas, Tectona grandis, programa de melhoramente |
| title | Overview of the teak silviculture in Brazil and perspectives for genetic improvement O cenário nacional da silvicultura de teca (Tectona grandis L. f.) e perspectivas de melhoramento |
| title_full | Overview of the teak silviculture in Brazil and perspectives for genetic improvement O cenário nacional da silvicultura de teca (Tectona grandis L. f.) e perspectivas de melhoramento |
| title_fullStr | Overview of the teak silviculture in Brazil and perspectives for genetic improvement O cenário nacional da silvicultura de teca (Tectona grandis L. f.) e perspectivas de melhoramento |
| title_full_unstemmed | Overview of the teak silviculture in Brazil and perspectives for genetic improvement O cenário nacional da silvicultura de teca (Tectona grandis L. f.) e perspectivas de melhoramento |
| title_short | Overview of the teak silviculture in Brazil and perspectives for genetic improvement O cenário nacional da silvicultura de teca (Tectona grandis L. f.) e perspectivas de melhoramento |
| title_sort | overview of the teak silviculture in brazil and perspectives for genetic improvement o cenario nacional da silvicultura de teca tectona grandis l f e perspectivas de melhoramento |
| topic | Brasil, espécies exóticas, Tectona grandis, programa de melhoramente |
| url | http://www.cnpf.embrapa.br/pfb/index.php/pfb/article/view/84 |
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