|
|
Registro Completo |
Biblioteca(s): |
Embrapa Mandioca e Fruticultura. |
Data corrente: |
06/02/2009 |
Data da última atualização: |
06/02/2009 |
Tipo da produção científica: |
Artigo em Anais de Congresso / Nota Técnica |
Autoria: |
SOARES, T. L.; SOUZA, E. H.; SANTOS-SEREJO, J. A.; SILVA, S. O.; COSTA, M. A. P. C.; SOUZA, A. S. |
Afiliação: |
Taliane Leila Soares, UFRB; Everton Hilo de Souza, UFRB; Janay Almeida dos Santos-Serejo, CNPMF; Sebastião de Oliveira e Silva, CNPMF; Maria Angélica P. C. Costa, UFRB; Antônio da Silva Souza, CNPMF. |
Título: |
Germinação in vitro de grãos de pólen de Musa balbisiana submetidos a diferentes temperaturas. |
Ano de publicação: |
2008 |
Fonte/Imprenta: |
In: REUNIÓN INTERNACIONAL DE ACORBAT, 18., 2008, Guayaquil, Ecuador. Memorias... Guayaquil: Corpei: Zamorano: Agearth: Expoplaza, 2008. |
Idioma: |
Português |
Conteúdo: |
A maioria das cultivares comestíveis destinadas ao comércio são principalmente
triplóides com variável grau de partenocarpia e esterilidade. As cultivares que constitui
As bananas produzidas mundialmente apresentam genoma B (AAB, ABB), porem não
existem cultivares do grupo BB, BBB ou BBBB, provavelmente devido à ausência de
partenocarpia o que não acontece normalmente com os diplóides AA (Ploetz et al.,
2007). Trabalhos sobre a viabilidade e o desenvolvimento de grãos de pólen são
fundamentais para estudos de biologia reprodutiva e melhoramento genético de
bananeira, pois permitem maior segurança nos cruzamentos, que são realizados com
finalidade de gerar novos híbridos e ou aumentar a viabilidade. |
Palavras-Chave: |
Melhoramento genetico. |
Thesagro: |
Banana; Pólen; Reprodução Vegetal. |
Categoria do assunto: |
-- |
Marc: |
LEADER 01462naa a2200229 a 4500 001 1655490 005 2009-02-06 008 2008 bl uuuu u00u1 u #d 100 1 $aSOARES, T. L. 245 $aGerminação in vitro de grãos de pólen de Musa balbisiana submetidos a diferentes temperaturas. 260 $c2008 520 $aA maioria das cultivares comestíveis destinadas ao comércio são principalmente triplóides com variável grau de partenocarpia e esterilidade. As cultivares que constitui As bananas produzidas mundialmente apresentam genoma B (AAB, ABB), porem não existem cultivares do grupo BB, BBB ou BBBB, provavelmente devido à ausência de partenocarpia o que não acontece normalmente com os diplóides AA (Ploetz et al., 2007). Trabalhos sobre a viabilidade e o desenvolvimento de grãos de pólen são fundamentais para estudos de biologia reprodutiva e melhoramento genético de bananeira, pois permitem maior segurança nos cruzamentos, que são realizados com finalidade de gerar novos híbridos e ou aumentar a viabilidade. 650 $aBanana 650 $aPólen 650 $aReprodução Vegetal 653 $aMelhoramento genetico 700 1 $aSOUZA, E. H. 700 1 $aSANTOS-SEREJO, J. A. 700 1 $aSILVA, S. O. 700 1 $aCOSTA, M. A. P. C. 700 1 $aSOUZA, A. S. 773 $tIn: REUNIÓN INTERNACIONAL DE ACORBAT, 18., 2008, Guayaquil, Ecuador. Memorias... Guayaquil: Corpei: Zamorano: Agearth: Expoplaza, 2008.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Mandioca e Fruticultura (CNPMF) |
|
Nenhum exemplar cadastrado para este documento. |
Voltar
|
|
| Acesso ao texto completo restrito à biblioteca da Embrapa Solos. Para informações adicionais entre em contato com cnps.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Solos. |
Data corrente: |
11/08/2015 |
Data da última atualização: |
09/11/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
CHALK, P. M.; CRASWELL, E. T.; POLIDORO, J. C.; CHEN, D. |
Afiliação: |
PHILLIP M. CHALK, UNIVERSITY OF MELBOURNE; ERIC T. CRASWELL, AUSTRALIAN NATIONAL UNIVERSITY; JOSE CARLOS POLIDORO, CNPS; DELI CHEN, UNIVERSITY OF MELBOURNE. |
Título: |
Fate and efficiency of 15 N-labelled slow- and controlled-release fertilizers. |
Ano de publicação: |
2015 |
Fonte/Imprenta: |
Nutrient Cycling in Agroecosystems, v. 102, n. 2, p. 167-178, Jun. 2015. |
DOI: |
https://doi.org/10.1007/s10705-015-9697-2 |
Idioma: |
Inglês |
Conteúdo: |
Slow- and controlled-release N fertilizers are designed to increase efficiency and reduce N losses by better synchronizing N availability with plant demand. This paper reviews the use of 15N with these fertilizers to collect quantitative data on the efficiency, residual value and N losses for which relatively few data are available compared with conventional labelled urea and ammonium-based fertilizers. In general, studies of slow-release forms (isobutylidene diurea, oxamide, ureaform) with rice and upland crops show one or more benefits, including improved N uptake efficiency, and reduced N losses via leaching or NH3 volatilization under conditions which favor such losses (coarse textured soils, alkaline pH, respectively). Benefits from residual 15N may accrue in the year following application. Studies with controlled-release 15N-labelled sulfur coated urea (SCU) show benefits in situations such as paddy soils where losses from broadcast urea are a substantial problem. In experiments with 15N polyolefin-coated urea (POCU), rice plant recovery of broadcast conventional urea or ammonium salts ranged from 24 % with losses of 50-45 % with losses of 33 %. Where 15N labelled SCU or POCU was used, the rice recovery ranged from 26 % with losses of 14-72 % with losses of 10 %. Experiments using POCU with corn, barley and potato show similar results. The paucity of published data obtained using 15N points to the need for further studies that will provide concrete evidence for the development of innovative fertilizers with enhanced efficiency and an evidence-based set of recommendations for their selection and use. MenosSlow- and controlled-release N fertilizers are designed to increase efficiency and reduce N losses by better synchronizing N availability with plant demand. This paper reviews the use of 15N with these fertilizers to collect quantitative data on the efficiency, residual value and N losses for which relatively few data are available compared with conventional labelled urea and ammonium-based fertilizers. In general, studies of slow-release forms (isobutylidene diurea, oxamide, ureaform) with rice and upland crops show one or more benefits, including improved N uptake efficiency, and reduced N losses via leaching or NH3 volatilization under conditions which favor such losses (coarse textured soils, alkaline pH, respectively). Benefits from residual 15N may accrue in the year following application. Studies with controlled-release 15N-labelled sulfur coated urea (SCU) show benefits in situations such as paddy soils where losses from broadcast urea are a substantial problem. In experiments with 15N polyolefin-coated urea (POCU), rice plant recovery of broadcast conventional urea or ammonium salts ranged from 24 % with losses of 50-45 % with losses of 33 %. Where 15N labelled SCU or POCU was used, the rice recovery ranged from 26 % with losses of 14-72 % with losses of 10 %. Experiments using POCU with corn, barley and potato show similar results. The paucity of published data obtained using 15N points to the need for further studies that will provide concrete evidence for the dev... Mostrar Tudo |
Palavras-Chave: |
Fertilizante de liberação lenta; Oxamida. |
Thesagro: |
Fertilizante. |
Thesaurus NAL: |
Fertilizers; Oxamide; Slow-release fertilizers. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 02376naa a2200241 a 4500 001 2021723 005 2021-11-09 008 2015 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1007/s10705-015-9697-2$2DOI 100 1 $aCHALK, P. M. 245 $aFate and efficiency of 15 N-labelled slow- and controlled-release fertilizers.$h[electronic resource] 260 $c2015 520 $aSlow- and controlled-release N fertilizers are designed to increase efficiency and reduce N losses by better synchronizing N availability with plant demand. This paper reviews the use of 15N with these fertilizers to collect quantitative data on the efficiency, residual value and N losses for which relatively few data are available compared with conventional labelled urea and ammonium-based fertilizers. In general, studies of slow-release forms (isobutylidene diurea, oxamide, ureaform) with rice and upland crops show one or more benefits, including improved N uptake efficiency, and reduced N losses via leaching or NH3 volatilization under conditions which favor such losses (coarse textured soils, alkaline pH, respectively). Benefits from residual 15N may accrue in the year following application. Studies with controlled-release 15N-labelled sulfur coated urea (SCU) show benefits in situations such as paddy soils where losses from broadcast urea are a substantial problem. In experiments with 15N polyolefin-coated urea (POCU), rice plant recovery of broadcast conventional urea or ammonium salts ranged from 24 % with losses of 50-45 % with losses of 33 %. Where 15N labelled SCU or POCU was used, the rice recovery ranged from 26 % with losses of 14-72 % with losses of 10 %. Experiments using POCU with corn, barley and potato show similar results. The paucity of published data obtained using 15N points to the need for further studies that will provide concrete evidence for the development of innovative fertilizers with enhanced efficiency and an evidence-based set of recommendations for their selection and use. 650 $aFertilizers 650 $aOxamide 650 $aSlow-release fertilizers 650 $aFertilizante 653 $aFertilizante de liberação lenta 653 $aOxamida 700 1 $aCRASWELL, E. T. 700 1 $aPOLIDORO, J. C. 700 1 $aCHEN, D. 773 $tNutrient Cycling in Agroecosystems$gv. 102, n. 2, p. 167-178, Jun. 2015.
Download
Esconder MarcMostrar Marc Completo |
Registro original: |
Embrapa Solos (CNPS) |
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
Expressão de busca inválida. Verifique!!! |
|
|