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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
10/12/1996 |
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Data da última atualização: |
25/08/2021 |
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Autoria: |
TAKAYAMA, S. Y.; FREITAS, P. M de; PAGLIARINI, M. S.; BATISTA, L. A. R. |
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Afiliação: |
LUIZ ALBERTO ROCHA BATISTA, CPPSE. |
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Título: |
Determinação do número de cromossomos em acessos de Paspalum (grupo plicatula). |
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Ano de publicação: |
1996 |
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Fonte/Imprenta: |
Revista Brasileira de Genética, Ribeirão Preto, SP, v.19, n.3, (Suppl.), p.133, Set. 1996. |
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Idioma: |
Português |
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Conteúdo: |
Determinou-se o numero de cromossomos de 52 acessos de Paspalum da coleção de germoplasma do CPPSE, provenientes de distintas regiões do Brasil. Todos os acessos pertenciam ao grupo Plicatula, sendo 13 de P. plicatulum, três de P. guenoarum, dois de P. yaguaronense, dois de P. compressiflolium, um de P. yaguaronense que apresentou 2n=60, todos os demais apresentaram 2n=40. |
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Palavras-Chave: |
Numero de cromossomos; Produção de forragem. |
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Thesagro: |
Poliploidia. |
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Thesaurus Nal: |
forage production; Paspalum. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/CPPSE/11376/1/PROCILARB1996.00115.pdf
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/110743/1/PROCILARB1996.00115.pdf
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Marc: |
LEADER 01052nam a2200205 a 4500
001 1043413
005 2021-08-25
008 1996 bl uuuu u00u1 u #d
100 1 $aTAKAYAMA, S. Y.
245 $aDeterminação do número de cromossomos em acessos de Paspalum (grupo plicatula).$h[electronic resource]
260 $aRevista Brasileira de Genética, Ribeirão Preto, SP, v.19, n.3, (Suppl.), p.133, Set. 1996.$c1996
520 $aDeterminou-se o numero de cromossomos de 52 acessos de Paspalum da coleção de germoplasma do CPPSE, provenientes de distintas regiões do Brasil. Todos os acessos pertenciam ao grupo Plicatula, sendo 13 de P. plicatulum, três de P. guenoarum, dois de P. yaguaronense, dois de P. compressiflolium, um de P. yaguaronense que apresentou 2n=60, todos os demais apresentaram 2n=40.
650 $aforage production
650 $aPaspalum
650 $aPoliploidia
653 $aNumero de cromossomos
653 $aProdução de forragem
700 1 $aFREITAS, P. M de
700 1 $aPAGLIARINI, M. S.
700 1 $aBATISTA, L. A. R.
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Embrapa Pecuária Sudeste (CPPSE) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Caprinos e Ovinos. Para informações adicionais entre em contato com cnpc.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Caprinos e Ovinos. |
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Data corrente: |
09/05/2024 |
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Data da última atualização: |
14/05/2024 |
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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: |
PRIMO, A. A.; ARAÚJO NETO, R. A. de; ZEFERINO. L. B.; FERNANDES, F. E. P.; ARAÚJO FILHO, J. A. de; CERRI, C. E. P.; OLIVEIRA, T. S. de. |
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Afiliação: |
ANACLÁUDIA ALVES PRIMO, UNIVERSIDADE FEDERAL DO CEARÁ; RENATO AMÉRICO DE ARAÚJO NETO, CENTRO UNIVERSITÁRIO MAURÍCIO DE NASSAU; LEILIANE BOZZI ZEFERINO, UNIVERSIDADE FEDERAL DE VIÇOSA; FRANCISCO EDEN PAIVA FERNANDES, CNPC; JOÃO AMBRÓSIO DE ARAÚJO FILHO, CNPC; CARLOS EDUARDO PELLEGRINO CERRI; TEOGENES SENNA DE OLIVEIRA. |
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Título: |
Slash and burn management and permanent or rotation agroforestry systems: a comparative study for C sequestration by century model simulation. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Journal of Environmental Management, v. 336, art. 117594, Jun. 2023. |
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DOI: |
10.1016/j.jenvman.2023.117594 |
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Idioma: |
Inglês |
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Notas: |
Coautor: João Ambrósio de Araújo Filho (in memoriam). |
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Conteúdo: |
Abstract: Understanding the effects of agroforestry systems (AFs) on soil organic carbon (SOC) requires long-term experiments, but scenarios simulations can anticipate the potential of these systems to sequester or lose carbon (C). This study aimed to simulate the SOC dynamics in slash and burn management (BURN) and AFs using the Century model. Data from a long-term experiment implemented in the Brazilian semiarid region were used to simulate SOC dynamics under BURN and AFs situations, and the natural vegetation (NV) “Caatinga” as a reference. BURN scenarios considered different fallow periods (0, 7, 15, 30, 50 and 100 years) among cultivation of the same area. The two types of AFs (agrosilvopastoral-AGP and silvopastoral-SILV) were simulated in two contrasting conditions: (i) each one of the AFs and also NV area were permanently conducted with no rotation among these areas; and (ii) the two AFs and NV rotated among them every 7 years. The correlation coefficients (r), coefficients of determination (CD) and coefficients of residual mass (CRM) showed adequate performance, meaning that the Century model is able to reproduce the SOC stocks in the slash and burn management and AFs situations. The equilibrium points of NV SOC stocks stabilized around 30.3 Mg ha−1, as similar to the measured average of 28.4 Mg ha−1 at field conditions. The adoption of BURN without a fallow period (0 years) resulted in a reduction of 50% of SOC, approximately 20 Mg ha−1, after the first 10 years. Permanent (p) and rotating (r) AFs management systems recovered (in 10 years) fast to the original SOC stocks, resulting in higher SOC stocks than NV SOC at equilibrium. The fallow period of 50 years is necessary to recovery SOC stocks in the Caatinga biome. The simulation shows that the AFs systems increase more SOC stocks than observed in natural vegetation in long-term. MenosAbstract: Understanding the effects of agroforestry systems (AFs) on soil organic carbon (SOC) requires long-term experiments, but scenarios simulations can anticipate the potential of these systems to sequester or lose carbon (C). This study aimed to simulate the SOC dynamics in slash and burn management (BURN) and AFs using the Century model. Data from a long-term experiment implemented in the Brazilian semiarid region were used to simulate SOC dynamics under BURN and AFs situations, and the natural vegetation (NV) “Caatinga” as a reference. BURN scenarios considered different fallow periods (0, 7, 15, 30, 50 and 100 years) among cultivation of the same area. The two types of AFs (agrosilvopastoral-AGP and silvopastoral-SILV) were simulated in two contrasting conditions: (i) each one of the AFs and also NV area were permanently conducted with no rotation among these areas; and (ii) the two AFs and NV rotated among them every 7 years. The correlation coefficients (r), coefficients of determination (CD) and coefficients of residual mass (CRM) showed adequate performance, meaning that the Century model is able to reproduce the SOC stocks in the slash and burn management and AFs situations. The equilibrium points of NV SOC stocks stabilized around 30.3 Mg ha−1, as similar to the measured average of 28.4 Mg ha−1 at field conditions. The adoption of BURN without a fallow period (0 years) resulted in a reduction of 50% of SOC, approximately 20 Mg ha−1, after the first 10 years. P... Mostrar Tudo |
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Palavras-Chave: |
Agroforestry system; Agrosilvopastoral systems; Brasil; Brazilian natural vegetation; Carbono orgânico do solo; Century model; Estoque de carbono; Fallow period; Modelagem; Modeling; Native vegetation; Semiárido; Sequestro de carbono; Sistema agrossilvipastoril; Sistemas agroflorestais; Soil carbon; Uso do solo. |
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Thesagro: |
Caatinga; Corte; Matéria Orgânica; Produção Animal; Queimada; Solo; Vegetação Nativa. |
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Thesaurus NAL: |
Agroecosystems; Brazil; Carbon sequestration; Semiarid soils; Shifting cultivation; Silvopastoral systems; Simulation models; Soil organic carbon; Soil organic matter. |
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Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
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Marc: |
LEADER 03748naa a2200613 a 4500
001 2164159
005 2024-05-14
008 2023 bl uuuu u00u1 u #d
024 7 $a10.1016/j.jenvman.2023.117594$2DOI
100 1 $aPRIMO, A. A.
245 $aSlash and burn management and permanent or rotation agroforestry systems$ba comparative study for C sequestration by century model simulation.$h[electronic resource]
260 $c2023
500 $aCoautor: João Ambrósio de Araújo Filho (in memoriam).
520 $aAbstract: Understanding the effects of agroforestry systems (AFs) on soil organic carbon (SOC) requires long-term experiments, but scenarios simulations can anticipate the potential of these systems to sequester or lose carbon (C). This study aimed to simulate the SOC dynamics in slash and burn management (BURN) and AFs using the Century model. Data from a long-term experiment implemented in the Brazilian semiarid region were used to simulate SOC dynamics under BURN and AFs situations, and the natural vegetation (NV) “Caatinga” as a reference. BURN scenarios considered different fallow periods (0, 7, 15, 30, 50 and 100 years) among cultivation of the same area. The two types of AFs (agrosilvopastoral-AGP and silvopastoral-SILV) were simulated in two contrasting conditions: (i) each one of the AFs and also NV area were permanently conducted with no rotation among these areas; and (ii) the two AFs and NV rotated among them every 7 years. The correlation coefficients (r), coefficients of determination (CD) and coefficients of residual mass (CRM) showed adequate performance, meaning that the Century model is able to reproduce the SOC stocks in the slash and burn management and AFs situations. The equilibrium points of NV SOC stocks stabilized around 30.3 Mg ha−1, as similar to the measured average of 28.4 Mg ha−1 at field conditions. The adoption of BURN without a fallow period (0 years) resulted in a reduction of 50% of SOC, approximately 20 Mg ha−1, after the first 10 years. Permanent (p) and rotating (r) AFs management systems recovered (in 10 years) fast to the original SOC stocks, resulting in higher SOC stocks than NV SOC at equilibrium. The fallow period of 50 years is necessary to recovery SOC stocks in the Caatinga biome. The simulation shows that the AFs systems increase more SOC stocks than observed in natural vegetation in long-term.
650 $aAgroecosystems
650 $aBrazil
650 $aCarbon sequestration
650 $aSemiarid soils
650 $aShifting cultivation
650 $aSilvopastoral systems
650 $aSimulation models
650 $aSoil organic carbon
650 $aSoil organic matter
650 $aCaatinga
650 $aCorte
650 $aMatéria Orgânica
650 $aProdução Animal
650 $aQueimada
650 $aSolo
650 $aVegetação Nativa
653 $aAgroforestry system
653 $aAgrosilvopastoral systems
653 $aBrasil
653 $aBrazilian natural vegetation
653 $aCarbono orgânico do solo
653 $aCentury model
653 $aEstoque de carbono
653 $aFallow period
653 $aModelagem
653 $aModeling
653 $aNative vegetation
653 $aSemiárido
653 $aSequestro de carbono
653 $aSistema agrossilvipastoril
653 $aSistemas agroflorestais
653 $aSoil carbon
653 $aUso do solo
700 1 $aARAÚJO NETO, R. A. de
700 1 $aZEFERINO. L. B.
700 1 $aFERNANDES, F. E. P.
700 1 $aARAÚJO FILHO, J. A. de
700 1 $aCERRI, C. E. P.
700 1 $aOLIVEIRA, T. S. de
773 $tJournal of Environmental Management$gv. 336, art. 117594, Jun. 2023.
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