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Registro Completo |
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
09/11/1993 |
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Data da última atualização: |
09/11/1993 |
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Autoria: |
SCHOEN, D. J.; BROWN, A. H. D. |
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Afiliação: |
Department of Biology, 1205 Avenue Dr. Penfield, Montreal, Quebec H3A 1B1, Canada; CSIRO Division of Plant Industry, GPO Box 1600, Canberra, A.C.T. 2601, Australia. |
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Título: |
Maximizing genetic diversity in core collection of wild crop relatives. |
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Ano de publicação: |
0 |
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Fonte/Imprenta: |
s. n. t. |
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Páginas: |
p.01-02 |
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Idioma: |
Inglês |
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Conteúdo: |
The conservation of genetic diversity of wild relatives is an important component of efforts to conserve crop genetic diversity. Including wild relatives in gene banks, however, presents several problems. First, there are many more species and populations of wild relatives than of crop plants, and it is practical to collect and maintain only a small portion of these. Second, due to their often wide-ranging geographical distributions, exploration and collection of wild relatives may involve significant costs. Third, reproductive biological characteristics such as low seed set and poor seed germination may make it costly to maintain wild relatives in gene banks. Fourth, many breeders use relatives only when the veriability they need is absent from elite lines.The challenge, therefore, is to make the variability of wild relatives more acessible at minimum cost. In this regard, the core collection may be an essential part of efforts to assemble a germplasm base of wild relatives that can be effectively exploited for plant improvement. |
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Thesagro: |
Banco de Germoplasma; Mutação; Variação Genética. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01503naa a2200181 a 4500
001 1646358
005 1993-11-09
008 bl --- 0-- u #d
100 1 $aSCHOEN, D. J.
245 $aMaximizing genetic diversity in core collection of wild crop relatives.
260 $c0
300 $ap.01-02
520 $aThe conservation of genetic diversity of wild relatives is an important component of efforts to conserve crop genetic diversity. Including wild relatives in gene banks, however, presents several problems. First, there are many more species and populations of wild relatives than of crop plants, and it is practical to collect and maintain only a small portion of these. Second, due to their often wide-ranging geographical distributions, exploration and collection of wild relatives may involve significant costs. Third, reproductive biological characteristics such as low seed set and poor seed germination may make it costly to maintain wild relatives in gene banks. Fourth, many breeders use relatives only when the veriability they need is absent from elite lines.The challenge, therefore, is to make the variability of wild relatives more acessible at minimum cost. In this regard, the core collection may be an essential part of efforts to assemble a germplasm base of wild relatives that can be effectively exploited for plant improvement.
650 $aBanco de Germoplasma
650 $aMutação
650 $aVariação Genética
700 1 $aBROWN, A. H. D.
773 $ts.$gn. t.
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Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
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Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
20/03/2008 |
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Data da última atualização: |
20/10/2009 |
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Tipo da produção científica: |
Documentos |
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Autoria: |
DUBOC, E.; COSTA, C. J.; VELOSO, R. F.; OLIVEIRA, L. S.; PALUDO, A. |
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Afiliação: |
Eny Duboc, CPAC; Caroline Jácome Costa, CPAC; Rui Fonseca Veloso, CPAC; Leonardo Santos Oliveira; Adriano Paludo. |
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Título: |
Panorama atual da produção de carvão vegetal no Brasil e no Cerrado. |
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Ano de publicação: |
2007 |
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Fonte/Imprenta: |
Planaltina, DF: Embrapa Cerrados, 2007. |
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Páginas: |
37 p. |
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Série: |
(Embrapa Cerrados. Documentos, 197). |
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Idioma: |
Português |
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Conteúdo: |
ABSTRACT: The charcoal production from planted forests has been insufficient to take care of the demand and has implied in more pressure on the forest remainders, in special of the biome Cerrado. In 2005, the charcoal consumption in Brazil reached 38 million of MDC (Meter of Charcoal). The evolution of the charcoal consumption produced from native species passed of 86 % of the total, in 1980, to approximately 49.6 %, in 2005, whereas the charcoal produced from planted forests jumped of 14,1 %, in 1980, to 50,4 %, in 2005. Minas Gerais is the greatest consumer of charcoal and consumed 66 % of the Brazilian production, in 2005. In Brazil, in 2004, 115,580 ha of energy forests had been planted, of which 83.6 % in Minas Gerais. Of the 5,5 million tons of charcoal produced in Brazil in 2005, 34.5 % had been produced with native species of the Cerrado. Despite of the governmental incentives and the credit availability, the investments for expansion of energy forests have been limited. The introduction of technological and operational improvements in the charcoal production system can result in more economic, social and ambient efficiency. The agroforestry systems can be an economically viable activity to small agricultural producers to increase the forest products' offer. |
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Palavras-Chave: |
Sistema agroflorestal. |
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Thesagro: |
Carvão; Carvão Vegetal; Cerrado; Eucalipto; Produção; Silvicultura. |
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Thesaurus NAL: |
agroforestry; charcoal; Eucalyptus; silviculture. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPAC-2009/28620/1/doc_197.pdf
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Marc: |
LEADER 02097nam a2200313 a 4500
001 1571937
005 2009-10-20
008 2007 bl uuuu u0uu1 u #d
100 1 $aDUBOC, E.
245 $aPanorama atual da produção de carvão vegetal no Brasil e no Cerrado.
260 $aPlanaltina, DF: Embrapa Cerrados$c2007
300 $a37 p.
490 $a(Embrapa Cerrados. Documentos, 197).
520 $aABSTRACT: The charcoal production from planted forests has been insufficient to take care of the demand and has implied in more pressure on the forest remainders, in special of the biome Cerrado. In 2005, the charcoal consumption in Brazil reached 38 million of MDC (Meter of Charcoal). The evolution of the charcoal consumption produced from native species passed of 86 % of the total, in 1980, to approximately 49.6 %, in 2005, whereas the charcoal produced from planted forests jumped of 14,1 %, in 1980, to 50,4 %, in 2005. Minas Gerais is the greatest consumer of charcoal and consumed 66 % of the Brazilian production, in 2005. In Brazil, in 2004, 115,580 ha of energy forests had been planted, of which 83.6 % in Minas Gerais. Of the 5,5 million tons of charcoal produced in Brazil in 2005, 34.5 % had been produced with native species of the Cerrado. Despite of the governmental incentives and the credit availability, the investments for expansion of energy forests have been limited. The introduction of technological and operational improvements in the charcoal production system can result in more economic, social and ambient efficiency. The agroforestry systems can be an economically viable activity to small agricultural producers to increase the forest products' offer.
650 $aagroforestry
650 $acharcoal
650 $aEucalyptus
650 $asilviculture
650 $aCarvão
650 $aCarvão Vegetal
650 $aCerrado
650 $aEucalipto
650 $aProdução
650 $aSilvicultura
653 $aSistema agroflorestal
700 1 $aCOSTA, C. J.
700 1 $aVELOSO, R. F.
700 1 $aOLIVEIRA, L. S.
700 1 $aPALUDO, A.
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Registro original: |
Embrapa Cerrados (CPAC) |
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