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Registro Completo |
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Biblioteca(s): |
Embrapa Unidades Centrais. |
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Data corrente: |
29/04/1998 |
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Data da última atualização: |
12/12/2007 |
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Autoria: |
LIMA, L. A. |
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Título: |
Rapports sociaux de production dans le nord-est Bresilien. |
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Ano de publicação: |
1981 |
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Fonte/Imprenta: |
1981. |
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Páginas: |
105 p. |
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Idioma: |
Francês |
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Notas: |
Dissertação (Mestrado)- Montpellier, Institut Agronomique Mediterraneen. |
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Conteúdo: |
Formation du complexe agro-exportateur dans le Nord-Est du Bresil; L'occupation des espaces interieures; Domination politique et concentration de la propriete fonciere; Structure fonciere et mecanismes de concentration de possession de la terre dans le Nord-Est; Force de travail, dimension des etablissements et formes d'utilisation de la terre; Rapports sociaux de production dans les complexes agro-exportateurs; Rapports sociaux de production dans les systemes a predominance d'elevage. |
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Palavras-Chave: |
Agricultural production; Brasil; Mão-de-obra rural; Nordeste; Rural manpower; Rural soiology. |
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Thesagro: |
Produção Agrícola; Sociologia Rural. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01129nam a2200229 a 4500
001 1097049
005 2007-12-12
008 1981 bl uuuu m 00u1 u #d
100 1 $aLIMA, L. A.
245 $aRapports sociaux de production dans le nord-est Bresilien.
260 $a1981.$c1981
300 $a105 p.
500 $aDissertação (Mestrado)- Montpellier, Institut Agronomique Mediterraneen.
520 $aFormation du complexe agro-exportateur dans le Nord-Est du Bresil; L'occupation des espaces interieures; Domination politique et concentration de la propriete fonciere; Structure fonciere et mecanismes de concentration de possession de la terre dans le Nord-Est; Force de travail, dimension des etablissements et formes d'utilisation de la terre; Rapports sociaux de production dans les complexes agro-exportateurs; Rapports sociaux de production dans les systemes a predominance d'elevage.
650 $aProdução Agrícola
650 $aSociologia Rural
653 $aAgricultural production
653 $aBrasil
653 $aMão-de-obra rural
653 $aNordeste
653 $aRural manpower
653 $aRural soiology
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Registro original: |
Embrapa Unidades Centrais (AI-SEDE) |
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Registro Completo
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Biblioteca(s): |
Embrapa Cocais. |
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Data corrente: |
03/06/2014 |
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Data da última atualização: |
03/06/2014 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
ALVES-PEREIRA, A.; PERONI, N.; CAVALLARI, M. M.; PINHEIRO, J. B.; LEMES, M. R.; CLEMENT, C. R.; ZUCCHI, M. I. |
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Afiliação: |
ALESSANDRO ALVES-PEREIRA, INPA; NIVALDO PERONI, UFSC; MARCELO MATTOS CAVALLARI, CPACP; JOSÉ BALDIN PINHEIRO, ESALQ/USP; MARISTERRA R. LEMES, INPA; CHARLES R. CLEMENT, INPA; MARIA IMACULADA ZUCCHI, APTA SP. |
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Título: |
High genetic diversity within and among bitter cassava cultivated in three soil types in Central Amazonia. |
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Ano de publicação: |
2014 |
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Fonte/Imprenta: |
In: CONFERENCE INTERNATIONAL PLANT & ANIMAL GENOME, 22., 2014, San Diego, CA. The largest ag-genomics meeting in the world. |
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Páginas: |
1 p. |
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Descrição Física: |
Resumo. |
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Idioma: |
Inglês |
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Conteúdo: |
Bitter cassava is an important food crop that was domesticated in Amazonia. Although it is exclusively propagated by stem cuttings, cassava retained its ability of sexual reproduction. The occurrence and incorporation of sexual plants into the stock of clonal varieties contributes to the high genetic diversity observed within the crop. Despite being well adapted to nutrient deprived soils of Amazonia, ethnobotanical observations showed that communities of smallholder farmers along the middle Madeira River, in Central Amazonia, also cultivate cassava in the highly fertile soils of the floodplains and Amazonian dark earths (ADE). These farmers grow different sets of varieties in each soil type, which may also contribute to the maintenance of high levels of genetic diversity within the crop. We evaluated with 10 nuclear microsatellite markers the genetic diversity within and among some of the most commonly cultivated bitter cassava varieties grown on ADE, floodplain and Oxisols soils in the middle Madeira region. High levels of genetic diversity within varieties were observed (HO ranging from 0.495 to 0.707, and HE ranging from 0.250 to 0.460). Additionally, varieties were generally highly differentiated from each other. Although high levels of genetic diversity were previously observed in studies carried out in regions of low soil fertility in other parts of Amazonia, we identified that management of different soil types is important to the maintenance of genetically distinct stocks of varieties, which also contributes to the maintenance of the genetic diversity within the crop. MenosBitter cassava is an important food crop that was domesticated in Amazonia. Although it is exclusively propagated by stem cuttings, cassava retained its ability of sexual reproduction. The occurrence and incorporation of sexual plants into the stock of clonal varieties contributes to the high genetic diversity observed within the crop. Despite being well adapted to nutrient deprived soils of Amazonia, ethnobotanical observations showed that communities of smallholder farmers along the middle Madeira River, in Central Amazonia, also cultivate cassava in the highly fertile soils of the floodplains and Amazonian dark earths (ADE). These farmers grow different sets of varieties in each soil type, which may also contribute to the maintenance of high levels of genetic diversity within the crop. We evaluated with 10 nuclear microsatellite markers the genetic diversity within and among some of the most commonly cultivated bitter cassava varieties grown on ADE, floodplain and Oxisols soils in the middle Madeira region. High levels of genetic diversity within varieties were observed (HO ranging from 0.495 to 0.707, and HE ranging from 0.250 to 0.460). Additionally, varieties were generally highly differentiated from each other. Although high levels of genetic diversity were previously observed in studies carried out in regions of low soil fertility in other parts of Amazonia, we identified that management of different soil types is important to the maintenance of genetically distinct ... Mostrar Tudo |
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Palavras-Chave: |
Bitter cassava; Diversidade genética. |
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Thesagro: |
Mandioca; Reprodução. |
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Thesaurus NAL: |
Amazonia; Cassava. |
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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/103009/1/Resumo-Marcelo-cavallari.pdf
https://pag.confex.com/pag/xxii/webprogram/Paper12157.html
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Marc: |
LEADER 02452nam a2200265 a 4500
001 1987518
005 2014-06-03
008 2014 bl uuuu u00u1 u #d
100 1 $aALVES-PEREIRA, A.
245 $aHigh genetic diversity within and among bitter cassava cultivated in three soil types in Central Amazonia.$h[electronic resource]
260 $aIn: CONFERENCE INTERNATIONAL PLANT & ANIMAL GENOME, 22., 2014, San Diego, CA. The largest ag-genomics meeting in the world.$c2014
300 $a1 p.$cResumo.
520 $aBitter cassava is an important food crop that was domesticated in Amazonia. Although it is exclusively propagated by stem cuttings, cassava retained its ability of sexual reproduction. The occurrence and incorporation of sexual plants into the stock of clonal varieties contributes to the high genetic diversity observed within the crop. Despite being well adapted to nutrient deprived soils of Amazonia, ethnobotanical observations showed that communities of smallholder farmers along the middle Madeira River, in Central Amazonia, also cultivate cassava in the highly fertile soils of the floodplains and Amazonian dark earths (ADE). These farmers grow different sets of varieties in each soil type, which may also contribute to the maintenance of high levels of genetic diversity within the crop. We evaluated with 10 nuclear microsatellite markers the genetic diversity within and among some of the most commonly cultivated bitter cassava varieties grown on ADE, floodplain and Oxisols soils in the middle Madeira region. High levels of genetic diversity within varieties were observed (HO ranging from 0.495 to 0.707, and HE ranging from 0.250 to 0.460). Additionally, varieties were generally highly differentiated from each other. Although high levels of genetic diversity were previously observed in studies carried out in regions of low soil fertility in other parts of Amazonia, we identified that management of different soil types is important to the maintenance of genetically distinct stocks of varieties, which also contributes to the maintenance of the genetic diversity within the crop.
650 $aAmazonia
650 $aCassava
650 $aMandioca
650 $aReprodução
653 $aBitter cassava
653 $aDiversidade genética
700 1 $aPERONI, N.
700 1 $aCAVALLARI, M. M.
700 1 $aPINHEIRO, J. B.
700 1 $aLEMES, M. R.
700 1 $aCLEMENT, C. R.
700 1 $aZUCCHI, M. I.
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Registro original: |
Embrapa Cocais (CPACP) |
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