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Registro Completo |
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Biblioteca(s): |
Embrapa Semiárido. |
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Data corrente: |
27/12/2001 |
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Data da última atualização: |
21/02/2019 |
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Autoria: |
FONTENELE, E.; ARAÚJO, J. C. de. |
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Título: |
Tarifa de água como instrumento de planejamento dos recursos hídricos da Bacia do Jaguaribe, CE. |
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Ano de publicação: |
2001 |
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Fonte/Imprenta: |
Revista Economica do Nordeste, Fortaleza, v.32, n.2, p.234-251, 2001. |
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Idioma: |
Português |
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Conteúdo: |
Este artigo objetiva contribuir para uma melhor gestao dos recursos hidricos no Estado do Ceara atraves de uma proposta metodologica de calculo do valor do custo da agua na bacia do rio Jaguaribe (Ceara). Para tanto, apos uma descricao do potencial hidrico dessa bacia para a economia cearense, sao apresentadas as duas abordagens metodologicas habitualmente utilizadas para determinar o valor que o usuario deve pagar por cada metro cubico de agua que utiliza: a do valor economico e a do custo de oferta da agua. A primeira, fundamentada na teoria economica e, portanto, mais ampla, visa estabelecer para a agua um preco que busque a eficiencia economica, social e ambiental. A segunda abordagem, mais restrita, procura determinar um preco para a agua que possa cobrir os custos de producao, servindo de base para determinar um sistema de tarifas para os usuarios. Finalmente, apos uma descricao da experiencia brasileira na avaliacao do custo da agua bruta, sao apresentados diversos valores do custo medio, no nivel de sub-bacia, do sistema hidrico da bacia do Jaguaribe (Ceara). |
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Palavras-Chave: |
Ceara; Cost; Management; Nordeste; Northeast; Tariff. |
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Thesagro: |
Água; Custo; Gestão; Recurso Hídrico; Tarifa. |
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Thesaurus Nal: |
water; water resources. |
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Categoria do assunto: |
E Economia e Indústria Agrícola |
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Marc: |
LEADER 01830naa a2200289 a 4500
001 1131184
005 2019-02-21
008 2001 bl uuuu u00u1 u #d
100 1 $aFONTENELE, E.
245 $aTarifa de água como instrumento de planejamento dos recursos hídricos da Bacia do Jaguaribe, CE.
260 $c2001
520 $aEste artigo objetiva contribuir para uma melhor gestao dos recursos hidricos no Estado do Ceara atraves de uma proposta metodologica de calculo do valor do custo da agua na bacia do rio Jaguaribe (Ceara). Para tanto, apos uma descricao do potencial hidrico dessa bacia para a economia cearense, sao apresentadas as duas abordagens metodologicas habitualmente utilizadas para determinar o valor que o usuario deve pagar por cada metro cubico de agua que utiliza: a do valor economico e a do custo de oferta da agua. A primeira, fundamentada na teoria economica e, portanto, mais ampla, visa estabelecer para a agua um preco que busque a eficiencia economica, social e ambiental. A segunda abordagem, mais restrita, procura determinar um preco para a agua que possa cobrir os custos de producao, servindo de base para determinar um sistema de tarifas para os usuarios. Finalmente, apos uma descricao da experiencia brasileira na avaliacao do custo da agua bruta, sao apresentados diversos valores do custo medio, no nivel de sub-bacia, do sistema hidrico da bacia do Jaguaribe (Ceara).
650 $awater
650 $awater resources
650 $aÁgua
650 $aCusto
650 $aGestão
650 $aRecurso Hídrico
650 $aTarifa
653 $aCeara
653 $aCost
653 $aManagement
653 $aNordeste
653 $aNortheast
653 $aTariff
700 1 $aARAÚJO, J. C. de
773 $tRevista Economica do Nordeste, Fortaleza$gv.32, n.2, p.234-251, 2001.
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Registro original: |
Embrapa Semiárido (CPATSA) |
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Registro Completo
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Biblioteca(s): |
Embrapa Café. |
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Data corrente: |
09/01/2023 |
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Data da última atualização: |
07/12/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
MENDONÇA, H. C.; PEREIRA, L. F. P.; SANTOS, J. V. M. dos; MEDA, A. R.; SANT?ANA, G. C. |
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Afiliação: |
HEITOR CALUX MENDONÇA, UNIVERSIDADE ESTADUAL DE LONDRINA; LUIZ FILIPE PROTASIO PEREIRA, CNPCa; JOÃO VITOR MALDONADO DOS SANTOS, TROPICAL MELHORAMENTO E GENÉTICA; ANDERSON ROTTER MEDA, TROPICAL MELHORAMENTO E GENÉTICA; GUSTAVO CÉSAR SANT'ANA, TROPICAL MELHORAMENTO E GENÉTICA. |
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Título: |
Genetic diversity and selection footprints in the genome of brazilian soybean cultivars. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Frontiers in Plant Science, v. 13, 2022. |
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Páginas: |
12 p. |
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Idioma: |
Inglês |
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Conteúdo: |
Although Brazil is currently the largest soybean producer in the world, only a small number of studies have analyzed the genetic diversity of Brazilian soybean. These studies have shown the existence of a narrow genetic base. The objectives of this work were to analyze the population structure and genetic diversity, and to identify selection signatures in the genome of soybean germplasms from different companies in Brazil. A panel consisting of 343 soybean lines from Brazil, North America, and Asia was genotyped using genotyping by sequencing (GBS). Population structure was assessed by Bayesian and multivariate approaches. Genetic diversity was analyzed using metrics such as the fixation index, nucleotide diversity, genetic dissimilarity, and linkage disequilibrium. The software BayeScan was used to detect selection signatures between Brazilian and Asian accessions as well as among Brazilian germplasms. Region of origin, company of origin, and relative maturity group (RMG) all had a significant influence on population structure. Varieties belonging to the same company and especially to the same RMG exhibited a high level of genetic similarity. This result was exacerbated among early maturing accessions. Brazilian soybean showed significantly lower genetic diversity when compared to Asian accessions. This was expected, because the crop?s region of origin is its main genetic diversity reserve. We identified 7 genomic regions under selection between the Brazilian and Asian accessions, and 27 among Brazilian varieties developed by different companies. Associated with these genomic regions, we found 96 quantitative trait loci (QTLs) for important soybean breeding traits such as flowering, maturity, plant architecture, productivity components, pathogen resistance, and seed composition. Some of the QTLs associated with the markers under selection have genes of great importance to soybean?s regional adaptation. The results reported herein allowed to expand the knowledge about the organization of the genetic variability of the Brazilian soybean germplasm. Furthermore, it was possible to identify genomic regions under selection possibly associated with the adaptation of soybean to Brazilian environments. MenosAlthough Brazil is currently the largest soybean producer in the world, only a small number of studies have analyzed the genetic diversity of Brazilian soybean. These studies have shown the existence of a narrow genetic base. The objectives of this work were to analyze the population structure and genetic diversity, and to identify selection signatures in the genome of soybean germplasms from different companies in Brazil. A panel consisting of 343 soybean lines from Brazil, North America, and Asia was genotyped using genotyping by sequencing (GBS). Population structure was assessed by Bayesian and multivariate approaches. Genetic diversity was analyzed using metrics such as the fixation index, nucleotide diversity, genetic dissimilarity, and linkage disequilibrium. The software BayeScan was used to detect selection signatures between Brazilian and Asian accessions as well as among Brazilian germplasms. Region of origin, company of origin, and relative maturity group (RMG) all had a significant influence on population structure. Varieties belonging to the same company and especially to the same RMG exhibited a high level of genetic similarity. This result was exacerbated among early maturing accessions. Brazilian soybean showed significantly lower genetic diversity when compared to Asian accessions. This was expected, because the crop?s region of origin is its main genetic diversity reserve. We identified 7 genomic regions under selection between the Brazilian and Asian acce... Mostrar Tudo |
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Thesaurus NAL: |
Genetic variance; Genome; Soybeans. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1150814/1/Genetic-Diversity-and-Selection.pdf
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Marc: |
LEADER 02845naa a2200217 a 4500
001 2150814
005 2023-12-07
008 2022 bl uuuu u00u1 u #d
100 1 $aMENDONÇA, H. C.
245 $aGenetic diversity and selection footprints in the genome of brazilian soybean cultivars.$h[electronic resource]
260 $c2022
300 $a12 p.
520 $aAlthough Brazil is currently the largest soybean producer in the world, only a small number of studies have analyzed the genetic diversity of Brazilian soybean. These studies have shown the existence of a narrow genetic base. The objectives of this work were to analyze the population structure and genetic diversity, and to identify selection signatures in the genome of soybean germplasms from different companies in Brazil. A panel consisting of 343 soybean lines from Brazil, North America, and Asia was genotyped using genotyping by sequencing (GBS). Population structure was assessed by Bayesian and multivariate approaches. Genetic diversity was analyzed using metrics such as the fixation index, nucleotide diversity, genetic dissimilarity, and linkage disequilibrium. The software BayeScan was used to detect selection signatures between Brazilian and Asian accessions as well as among Brazilian germplasms. Region of origin, company of origin, and relative maturity group (RMG) all had a significant influence on population structure. Varieties belonging to the same company and especially to the same RMG exhibited a high level of genetic similarity. This result was exacerbated among early maturing accessions. Brazilian soybean showed significantly lower genetic diversity when compared to Asian accessions. This was expected, because the crop?s region of origin is its main genetic diversity reserve. We identified 7 genomic regions under selection between the Brazilian and Asian accessions, and 27 among Brazilian varieties developed by different companies. Associated with these genomic regions, we found 96 quantitative trait loci (QTLs) for important soybean breeding traits such as flowering, maturity, plant architecture, productivity components, pathogen resistance, and seed composition. Some of the QTLs associated with the markers under selection have genes of great importance to soybean?s regional adaptation. The results reported herein allowed to expand the knowledge about the organization of the genetic variability of the Brazilian soybean germplasm. Furthermore, it was possible to identify genomic regions under selection possibly associated with the adaptation of soybean to Brazilian environments.
650 $aGenetic variance
650 $aGenome
650 $aSoybeans
700 1 $aPEREIRA, L. F. P.
700 1 $aSANTOS, J. V. M. dos
700 1 $aMEDA, A. R.
700 1 $aSANT?ANA, G. C.
773 $tFrontiers in Plant Science$gv. 13, 2022.
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