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Registro Completo |
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Biblioteca(s): |
Embrapa Meio Ambiente. |
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Data corrente: |
13/05/1993 |
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Data da última atualização: |
10/01/2020 |
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Autoria: |
MARTINS, J. J. F. |
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Título: |
Agricultura de subsistência no Estado de Sao Paulo - resposta aos estímulos de preços. |
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Ano de publicação: |
1984 |
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Fonte/Imprenta: |
Sao Paulo: Universidade de Sao Paulo, 1984. |
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Páginas: |
106f. |
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Idioma: |
Português |
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Notas: |
Tese Mestrado. |
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Palavras-Chave: |
Estímulos; Preços; Subsistência. |
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Thesagro: |
Agricultura. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00483nam a2200169 a 4500
001 1010413
005 2020-01-10
008 1984 bl uuuu m 00u1 u #d
100 1 $aMARTINS, J. J. F.
245 $aAgricultura de subsistência no Estado de Sao Paulo - resposta aos estímulos de preços.
260 $aSao Paulo: Universidade de Sao Paulo$c1984
300 $a106f.
500 $aTese Mestrado.
650 $aAgricultura
653 $aEstímulos
653 $aPreços
653 $aSubsistência
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Registro original: |
Embrapa Meio Ambiente (CNPMA) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Mandioca e Fruticultura. Para informações adicionais entre em contato com cnpmf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
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Data corrente: |
16/10/2008 |
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Data da última atualização: |
03/02/2009 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
ALVES, A.; SETTER, T.; FREGENE, M.; FERGUSON, M.; DUQUE, L.; MUTEGI, R.; MKAMILO, G. |
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Afiliação: |
Alfredo Augusto Cunha Alves, CNPMF; Tim Setter, Cornell University; Martin Fregene, CIAT; Morag Ferguson, IITA; Luis Duque, Cornell University; Rosemary Mutegi, ICRISAT-Nairobi; Geoffrey Mkamilo, ARI-Tanzania. |
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Título: |
Traits related to drought tolerance mechanisms in cassava. |
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Ano de publicação: |
2008 |
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Fonte/Imprenta: |
In: CGIAR GENERATION CHALLENGE PROGRAMME ANNUAL RESEARCH MEETING, 2008, Bangkok, Thailand. Poster abstracts... Mexico, DF: Generation Challenge Programme, 2008. p. 53. |
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Idioma: |
Inglês |
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Conteúdo: |
Contrasting cassava varieties were screened in semi-arid environments to characterise genotypes for drought tolerance traits. The following hypotheses were supported: 1) genotypes that accumulated substantial stem starch reserves may be more able to sustain meristems and other respiring organs during a prolonged stress; 2) genotypes that maintain deep fibrous root growth perform better in drought; 3) genotypes that maintain partiotioning to storage roots and have high harvest index yield better in drought; and 4) genotypes that are more effective in closing stomata are more able to maintain water status and retain leaves. Leaf conductance, leaf retention, leaf size, harvest index, ABA, sugars and starch accumulation in the leaves and stems were differentially affected in the cassava varieties and highly correlated to yield performance under water deficit. The different responses to water deficit for some parameters has helped us to better discriminate varieties as tolerant or susceptible to drought and to define the best traits for selecting in breeding programmes. Three segregating populations with a total of 370 individuals were produced. A genotypic parental screen has revealed 168 polymorphic SSRs in COL1734 x VEN77 and 147 in COL1468 x BRA255, from 307 SSRs screened. Genotyping and phenotyping of the mapping populations are underway. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01970naa a2200193 a 4500
001 1637241
005 2009-02-03
008 2008 bl uuuu u00u1 u #d
100 1 $aALVES, A.
245 $aTraits related to drought tolerance mechanisms in cassava.
260 $c2008
520 $aContrasting cassava varieties were screened in semi-arid environments to characterise genotypes for drought tolerance traits. The following hypotheses were supported: 1) genotypes that accumulated substantial stem starch reserves may be more able to sustain meristems and other respiring organs during a prolonged stress; 2) genotypes that maintain deep fibrous root growth perform better in drought; 3) genotypes that maintain partiotioning to storage roots and have high harvest index yield better in drought; and 4) genotypes that are more effective in closing stomata are more able to maintain water status and retain leaves. Leaf conductance, leaf retention, leaf size, harvest index, ABA, sugars and starch accumulation in the leaves and stems were differentially affected in the cassava varieties and highly correlated to yield performance under water deficit. The different responses to water deficit for some parameters has helped us to better discriminate varieties as tolerant or susceptible to drought and to define the best traits for selecting in breeding programmes. Three segregating populations with a total of 370 individuals were produced. A genotypic parental screen has revealed 168 polymorphic SSRs in COL1734 x VEN77 and 147 in COL1468 x BRA255, from 307 SSRs screened. Genotyping and phenotyping of the mapping populations are underway.
700 1 $aSETTER, T.
700 1 $aFREGENE, M.
700 1 $aFERGUSON, M.
700 1 $aDUQUE, L.
700 1 $aMUTEGI, R.
700 1 $aMKAMILO, G.
773 $tIn: CGIAR GENERATION CHALLENGE PROGRAMME ANNUAL RESEARCH MEETING, 2008, Bangkok, Thailand. Poster abstracts... Mexico, DF: Generation Challenge Programme, 2008. p. 53.
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Embrapa Mandioca e Fruticultura (CNPMF) |
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