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Registro Completo |
Biblioteca(s): |
Embrapa Algodão; Embrapa Amapá; Embrapa Amazônia Oriental; Embrapa Arroz e Feijão. |
Data corrente: |
23/04/1992 |
Data da última atualização: |
08/04/2002 |
Autoria: |
GARCIA, A. E. B.; YOTSUYANAGI, K.; VIEIRA, M. C. |
Título: |
Sazonalidade do trabalho na agricultura paulista na decada de setenta. |
Ano de publicação: |
1988 |
Fonte/Imprenta: |
Sao Paulo: Instituto de Economia Agricola, 1988. |
Páginas: |
68p. |
Série: |
(Instituto de Economia Agricola. Relatorio de Pesquisa, 26/88). |
ISSN: |
0101-5109 |
Idioma: |
Português |
Conteúdo: |
Metodologia; Variacao estacional da absorsao da mao-de-obra volante; Comparacao entre a ocupacao estacional de mao-de-obra volante e da mao-de-obra residente no imovel. |
Palavras-Chave: |
Agricola; Boia-fria; Brasil; Categorias; Decada; Economy; Fatores; Fazendas; Forca; Indice; Indices; Mão-de-obra rural; Mudanca; Obra; Padrao; Repercucao; Residente; Responsaveis; Sao Paulo; Sazonais; Sazonalidade; Setenta; Social; Tendencias; Trabalhadores; variacao. |
Thesagro: |
Absorção; Agricultura; Capital; Crescimento; Economia; Emprego; Mão; Modernização; Ocupação; Trabalho. |
Thesaurus Nal: |
agriculture; labor force. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01656nam a2200625 a 4500 001 1204708 005 2002-04-08 008 1988 bl uuuu 00u1 u #d 022 $a0101-5109 100 1 $aGARCIA, A. E. B. 245 $aSazonalidade do trabalho na agricultura paulista na decada de setenta. 260 $aSao Paulo: Instituto de Economia Agricola$c1988 300 $a68p. 490 $a(Instituto de Economia Agricola. Relatorio de Pesquisa, 26/88). 520 $aMetodologia; Variacao estacional da absorsao da mao-de-obra volante; Comparacao entre a ocupacao estacional de mao-de-obra volante e da mao-de-obra residente no imovel. 650 $aagriculture 650 $alabor force 650 $aAbsorção 650 $aAgricultura 650 $aCapital 650 $aCrescimento 650 $aEconomia 650 $aEmprego 650 $aMão 650 $aModernização 650 $aOcupação 650 $aTrabalho 653 $aAgricola 653 $aBoia-fria 653 $aBrasil 653 $aCategorias 653 $aDecada 653 $aEconomy 653 $aFatores 653 $aFazendas 653 $aForca 653 $aIndice 653 $aIndices 653 $aMão-de-obra rural 653 $aMudanca 653 $aObra 653 $aPadrao 653 $aRepercucao 653 $aResidente 653 $aResponsaveis 653 $aSao Paulo 653 $aSazonais 653 $aSazonalidade 653 $aSetenta 653 $aSocial 653 $aTendencias 653 $aTrabalhadores 653 $avariacao 700 1 $aYOTSUYANAGI, K. 700 1 $aVIEIRA, M. C.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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Registro Completo
Biblioteca(s): |
Embrapa Arroz e Feijão. |
Data corrente: |
08/04/2015 |
Data da última atualização: |
21/03/2016 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
HEINEMANN, A. B.; BARRIOS-PEREZ, C.; RAMIREZ-VILLEGAS, J.; ARANGO-LONDOÑO, D.; BONILLA-FINDJI, O.; MEDEIROS, J. C.; JARVIS, A. |
Afiliação: |
ALEXANDRE BRYAN HEINEMANN, CNPAF; CAMILO BARRIOS-PEREZ, CIAT; JULIAN RAMIREZ-VILLEGAS, CIAT; DAVID ARANGO-LONDOÑO, CIAT; OSANA BONILLA-FINDJI, CIAT; JOÃO CARLOS MEDEIROS; ANDY JARVIS, CIAT. |
Título: |
Variation and impact of drought-stress patterns across upland rice target population of environments in Brazil. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
Journal of Experimental Botany, London, v. 66, n. 12, p. 3625-3638, June 2015. |
DOI: |
10.1093/jxb/erv126 |
Idioma: |
Inglês |
Notas: |
Published online April 4, 2015. |
Conteúdo: |
The upland rice (UR) cropped area in Brazil has decreased in the last decade. Importantly, a portion of this decrease can be attributed to the current UR breeding programme strategy, according to which direct grain yield selection is targeted primarily to the most favourable areas. New strategies for more-efficient crop breeding under non-optimal conditions are needed for Brazil?s UR regions. Such strategies should include a classification of spatio-temporal yield variations in environmental groups, as well as a determination of prevalent drought types and their characteristics (duration, intensity, phenological timing, and physiological effects) within those environmental groups. This study used a process-based crop model to support the Brazilian UR breeding programme in their efforts to adopt a new strategy that accounts for the varying range of environments where UR is currently cultivated. Crop simulations based on a commonly grown cultivar (BRS Primavera) and statistical analyses of simulated yield suggested that the target population of environments can be divided into three groups of environments: a highly favorable environment (HFE, 19% of area), a favorable environment (FE, 44%), and least favourable environment (LFE, 37%). Stress-free conditions dominated the HFE group (69% likelihood) and reproductive stress dominated the LFE group (68% likelihood), whereas reproductive and terminal drought stress were found to be almost equally likely to occur in the FE group. For the best and worst environments, we propose specific adaptation focused on the representative stress, while for the FE, wide adaptation to drought is suggested. ?Weighted selection? is also a possible strategy for the FE and LFE environment groups. MenosThe upland rice (UR) cropped area in Brazil has decreased in the last decade. Importantly, a portion of this decrease can be attributed to the current UR breeding programme strategy, according to which direct grain yield selection is targeted primarily to the most favourable areas. New strategies for more-efficient crop breeding under non-optimal conditions are needed for Brazil?s UR regions. Such strategies should include a classification of spatio-temporal yield variations in environmental groups, as well as a determination of prevalent drought types and their characteristics (duration, intensity, phenological timing, and physiological effects) within those environmental groups. This study used a process-based crop model to support the Brazilian UR breeding programme in their efforts to adopt a new strategy that accounts for the varying range of environments where UR is currently cultivated. Crop simulations based on a commonly grown cultivar (BRS Primavera) and statistical analyses of simulated yield suggested that the target population of environments can be divided into three groups of environments: a highly favorable environment (HFE, 19% of area), a favorable environment (FE, 44%), and least favourable environment (LFE, 37%). Stress-free conditions dominated the HFE group (69% likelihood) and reproductive stress dominated the LFE group (68% likelihood), whereas reproductive and terminal drought stress were found to be almost equally likely to occur in the FE group. Fo... Mostrar Tudo |
Thesagro: |
Arroz; Deficiência hídrica; Melhoramento; Oryza sativa; Resistência a seca. |
Thesaurus NAL: |
Breeding; Models; Rice. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
Marc: |
LEADER 02700naa a2200313 a 4500 001 2012946 005 2016-03-21 008 2015 bl uuuu u00u1 u #d 024 7 $a10.1093/jxb/erv126$2DOI 100 1 $aHEINEMANN, A. B. 245 $aVariation and impact of drought-stress patterns across upland rice target population of environments in Brazil.$h[electronic resource] 260 $c2015 500 $aPublished online April 4, 2015. 520 $aThe upland rice (UR) cropped area in Brazil has decreased in the last decade. Importantly, a portion of this decrease can be attributed to the current UR breeding programme strategy, according to which direct grain yield selection is targeted primarily to the most favourable areas. New strategies for more-efficient crop breeding under non-optimal conditions are needed for Brazil?s UR regions. Such strategies should include a classification of spatio-temporal yield variations in environmental groups, as well as a determination of prevalent drought types and their characteristics (duration, intensity, phenological timing, and physiological effects) within those environmental groups. This study used a process-based crop model to support the Brazilian UR breeding programme in their efforts to adopt a new strategy that accounts for the varying range of environments where UR is currently cultivated. Crop simulations based on a commonly grown cultivar (BRS Primavera) and statistical analyses of simulated yield suggested that the target population of environments can be divided into three groups of environments: a highly favorable environment (HFE, 19% of area), a favorable environment (FE, 44%), and least favourable environment (LFE, 37%). Stress-free conditions dominated the HFE group (69% likelihood) and reproductive stress dominated the LFE group (68% likelihood), whereas reproductive and terminal drought stress were found to be almost equally likely to occur in the FE group. For the best and worst environments, we propose specific adaptation focused on the representative stress, while for the FE, wide adaptation to drought is suggested. ?Weighted selection? is also a possible strategy for the FE and LFE environment groups. 650 $aBreeding 650 $aModels 650 $aRice 650 $aArroz 650 $aDeficiência hídrica 650 $aMelhoramento 650 $aOryza sativa 650 $aResistência a seca 700 1 $aBARRIOS-PEREZ, C. 700 1 $aRAMIREZ-VILLEGAS, J. 700 1 $aARANGO-LONDOÑO, D. 700 1 $aBONILLA-FINDJI, O. 700 1 $aMEDEIROS, J. C. 700 1 $aJARVIS, A. 773 $tJournal of Experimental Botany, London$gv. 66, n. 12, p. 3625-3638, June 2015.
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Embrapa Arroz e Feijão (CNPAF) |
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