| |
|
|
|
Registro Completo |
|
Biblioteca(s): |
Embrapa Florestas. |
|
Data corrente: |
27/08/2008 |
|
Data da última atualização: |
27/08/2008 |
|
Autoria: |
SILVA, L. M. de M.; AGUIAR, I. B. de; MATOS, V. P.; VIÉGAS, R. A.; MENDONÇA, I. F. C. de. |
|
Título: |
Physiological maturity of Cnidosculus quercifolius Pax & K. Hoffm. seeds. |
|
Ano de publicação: |
2008 |
|
Fonte/Imprenta: |
Scientia Forestalis, Piracicaba, n. 77, p. 15-20, mar. 2008. |
|
Idioma: |
Inglês |
|
Conteúdo: |
Cnidosculus quercifolius (Euphorbiaceae) é uma importante espécie arbórea nativa da região nordeste do Brasil, conhecida como faveleira. A maturidade fisiológica das sementes dessa espécie foi estudada com o objetivo de determinar índices que estabeleçam a melhor época de coleta de seus frutos. Os frutos foram coletados semanalmente, durante o período de 30 a 72 dias após o florescimento, quando características como coloração, tamanho, massas fresca e seca e deiscência foram observadas. As sementes extraídas foram analisadas quanto à coloração, teor de água, germinação e vigor. Os resultados mostraram que a coloração, o tamanho e a massa fresca dos frutos não foram eficientes para refletir a maturidade das sementes.
A maturidade fisiológica ocorreu aos 65 dias após o florescimento, quando foram obtidos valores máximos de massa seca dos frutos, bem como de germinação e vigor das sementes. Nessa época, o teor de água das sementes foi de 22,7%. O epicarpo dos frutos fica enrolado, porém aderido ao endocarpo, constituindo um eficiente e prático índice visual da época de coleta. A deiscência natural ocorre aos 72 dias após o florescimento, liberando de forma explosiva as sementes do interior dos frutos. |
|
Palavras-Chave: |
Coleta; Collection; Forest seed; Maturation; Physiological quality; Qualidade fisiológica. |
|
Thesagro: |
Faveleira; Frutificação; Maturação; Semente Florestal. |
|
Thesaurus Nal: |
fruiting. |
|
Categoria do assunto: |
-- |
|
Marc: |
LEADER 02075naa a2200301 a 4500
001 1314651
005 2008-08-27
008 2008 bl uuuu u00u1 u #d
100 1 $aSILVA, L. M. de M.
245 $aPhysiological maturity of Cnidosculus quercifolius Pax & K. Hoffm. seeds.
260 $c2008
520 $aCnidosculus quercifolius (Euphorbiaceae) é uma importante espécie arbórea nativa da região nordeste do Brasil, conhecida como faveleira. A maturidade fisiológica das sementes dessa espécie foi estudada com o objetivo de determinar índices que estabeleçam a melhor época de coleta de seus frutos. Os frutos foram coletados semanalmente, durante o período de 30 a 72 dias após o florescimento, quando características como coloração, tamanho, massas fresca e seca e deiscência foram observadas. As sementes extraídas foram analisadas quanto à coloração, teor de água, germinação e vigor. Os resultados mostraram que a coloração, o tamanho e a massa fresca dos frutos não foram eficientes para refletir a maturidade das sementes. A maturidade fisiológica ocorreu aos 65 dias após o florescimento, quando foram obtidos valores máximos de massa seca dos frutos, bem como de germinação e vigor das sementes. Nessa época, o teor de água das sementes foi de 22,7%. O epicarpo dos frutos fica enrolado, porém aderido ao endocarpo, constituindo um eficiente e prático índice visual da época de coleta. A deiscência natural ocorre aos 72 dias após o florescimento, liberando de forma explosiva as sementes do interior dos frutos.
650 $afruiting
650 $aFaveleira
650 $aFrutificação
650 $aMaturação
650 $aSemente Florestal
653 $aColeta
653 $aCollection
653 $aForest seed
653 $aMaturation
653 $aPhysiological quality
653 $aQualidade fisiológica
700 1 $aAGUIAR, I. B. de
700 1 $aMATOS, V. P.
700 1 $aVIÉGAS, R. A.
700 1 $aMENDONÇA, I. F. C. de
773 $tScientia Forestalis, Piracicaba$gn. 77, p. 15-20, mar. 2008.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Florestas (CNPF) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
|
|
|
 | Acesso ao texto completo restrito à biblioteca da Embrapa Agrobiologia. Para informações adicionais entre em contato com cnpab.biblioteca@embrapa.br. |
Registro Completo
|
Biblioteca(s): |
Embrapa Agrobiologia. |
|
Data corrente: |
05/03/2024 |
|
Data da última atualização: |
05/03/2024 |
|
Tipo da produção científica: |
Artigo em Periódico Indexado |
|
Circulação/Nível: |
A - 1 |
|
Autoria: |
TELES, E.; XAVIER, J. F.; ARCENIO, F. S.; AMAYA, R. L.; GONÇALVES, J. V. S.; ROUWS, L. F. M.; ZONTA, E.; COELHO, I. S. |
|
Afiliação: |
ERICO TELES, UFRRJ; FRANCIS J. XAVIER, UFRRJ; UFRRJ; UFRRJ; UFRRJ; LUC FELICIANUS MARIE ROUWS, CNPAB; UFRRJ; UFRRJ. |
|
Título: |
Characterization and evaluation of potential halotolerant phosphate solubilizing bacteria from Salicornia fruticosa rhizosphere. |
|
Ano de publicação: |
2024 |
|
Fonte/Imprenta: |
Frontiers in Plant Science, v. 14, article 1324056, 2024. |
|
ISSN: |
1664-462X |
|
DOI: |
10.3389/fpls.2023.1324056 |
|
Idioma: |
Inglês |
|
Conteúdo: |
Soil salinization is a significant abiotic factor threatening agricultural production, while the low availability of phosphorus (P) in plants is another worldwide limitation. Approximately 95-99% of the P in soil is unavailable to plants. Phosphate-solubilizing bacteria (PSB) transform insoluble phosphates into soluble forms that plants can utilize. The application of PSB can replace or partially reduce the use of P fertilizers. Therefore, selecting bacteria with high solubilization capacity from extreme environments, such as saline soils, becomes crucial. This study aimed to identify twenty-nine bacterial strains from the rhizosphere of Salicornia fruticosa by sequencing the 16S rDNA gene, evaluate their development in increasing concentrations of NaCl, classify them according to their salinity response, and determine their P solubilization capability. The bacteria were cultivated in nutrient agar medium with NaCl concentrations ranging from 0.5% to 30%. The phosphate solubilization capacity of the bacteria was evaluated in angar and broth National Botanical Research Institute (NBRIP) media supplemented with calcium phosphate (CaHPO4) and aluminum phosphate (AlPO4), and increased with 3% NaCl. All bacterial strains were classified as halotolerant and identified to the genera Bacillus, Enterobacter, Halomonas, Kushneria, Oceanobacillus, Pantoea, Pseudomonas, and Staphylococcus, with only one isolate was not identified. The isolates with the highest ability to solubilize phosphorus from CaHPO4 in the liquid medium were Kushneria sp. (SS102) and Enterobacter sp. (SS186), with 989.53 and 956.37 mg center dot Kg(-1) P content and final pH of 4.1 and 3.9, respectively. For the solubilization of AlPO4, the most effective isolates were Bacillus sp. (SS89) and Oceanobacillus sp. (SS94), which raised soluble P by 61.10 and 45.82 mg center dot Kg(-1) and final pH of 2.9 and 3.6, respectively. These bacteria demonstrated promising results in in vitro P solubilization and can present potential for the development of bioinput. Further analyses, involving different phosphate sources and the composition of produced organic acids, will be conducted to contribute to a comprehensive understanding of their applications in sustainable agriculture MenosSoil salinization is a significant abiotic factor threatening agricultural production, while the low availability of phosphorus (P) in plants is another worldwide limitation. Approximately 95-99% of the P in soil is unavailable to plants. Phosphate-solubilizing bacteria (PSB) transform insoluble phosphates into soluble forms that plants can utilize. The application of PSB can replace or partially reduce the use of P fertilizers. Therefore, selecting bacteria with high solubilization capacity from extreme environments, such as saline soils, becomes crucial. This study aimed to identify twenty-nine bacterial strains from the rhizosphere of Salicornia fruticosa by sequencing the 16S rDNA gene, evaluate their development in increasing concentrations of NaCl, classify them according to their salinity response, and determine their P solubilization capability. The bacteria were cultivated in nutrient agar medium with NaCl concentrations ranging from 0.5% to 30%. The phosphate solubilization capacity of the bacteria was evaluated in angar and broth National Botanical Research Institute (NBRIP) media supplemented with calcium phosphate (CaHPO4) and aluminum phosphate (AlPO4), and increased with 3% NaCl. All bacterial strains were classified as halotolerant and identified to the genera Bacillus, Enterobacter, Halomonas, Kushneria, Oceanobacillus, Pantoea, Pseudomonas, and Staphylococcus, with only one isolate was not identified. The isolates with the highest ability to solubilize phos... Mostrar Tudo |
|
Palavras-Chave: |
Rhizobacteria. |
|
Thesaurus NAL: |
Phosphorus; Plant growth. |
|
Categoria do assunto: |
S Ciências Biológicas |
|
Marc: |
LEADER 03068naa a2200265 a 4500
001 2162586
005 2024-03-05
008 2024 bl uuuu u00u1 u #d
022 $a1664-462X
024 7 $a10.3389/fpls.2023.1324056$2DOI
100 1 $aTELES, E.
245 $aCharacterization and evaluation of potential halotolerant phosphate solubilizing bacteria from Salicornia fruticosa rhizosphere.$h[electronic resource]
260 $c2024
520 $aSoil salinization is a significant abiotic factor threatening agricultural production, while the low availability of phosphorus (P) in plants is another worldwide limitation. Approximately 95-99% of the P in soil is unavailable to plants. Phosphate-solubilizing bacteria (PSB) transform insoluble phosphates into soluble forms that plants can utilize. The application of PSB can replace or partially reduce the use of P fertilizers. Therefore, selecting bacteria with high solubilization capacity from extreme environments, such as saline soils, becomes crucial. This study aimed to identify twenty-nine bacterial strains from the rhizosphere of Salicornia fruticosa by sequencing the 16S rDNA gene, evaluate their development in increasing concentrations of NaCl, classify them according to their salinity response, and determine their P solubilization capability. The bacteria were cultivated in nutrient agar medium with NaCl concentrations ranging from 0.5% to 30%. The phosphate solubilization capacity of the bacteria was evaluated in angar and broth National Botanical Research Institute (NBRIP) media supplemented with calcium phosphate (CaHPO4) and aluminum phosphate (AlPO4), and increased with 3% NaCl. All bacterial strains were classified as halotolerant and identified to the genera Bacillus, Enterobacter, Halomonas, Kushneria, Oceanobacillus, Pantoea, Pseudomonas, and Staphylococcus, with only one isolate was not identified. The isolates with the highest ability to solubilize phosphorus from CaHPO4 in the liquid medium were Kushneria sp. (SS102) and Enterobacter sp. (SS186), with 989.53 and 956.37 mg center dot Kg(-1) P content and final pH of 4.1 and 3.9, respectively. For the solubilization of AlPO4, the most effective isolates were Bacillus sp. (SS89) and Oceanobacillus sp. (SS94), which raised soluble P by 61.10 and 45.82 mg center dot Kg(-1) and final pH of 2.9 and 3.6, respectively. These bacteria demonstrated promising results in in vitro P solubilization and can present potential for the development of bioinput. Further analyses, involving different phosphate sources and the composition of produced organic acids, will be conducted to contribute to a comprehensive understanding of their applications in sustainable agriculture
650 $aPhosphorus
650 $aPlant growth
653 $aRhizobacteria
700 1 $aXAVIER, J. F.
700 1 $aARCENIO, F. S.
700 1 $aAMAYA, R. L.
700 1 $aGONÇALVES, J. V. S.
700 1 $aROUWS, L. F. M.
700 1 $aZONTA, E.
700 1 $aCOELHO, I. S.
773 $tFrontiers in Plant Science$gv. 14, article 1324056, 2024.
Download
Esconder MarcMostrar Marc Completo |
|
Registro original: |
Embrapa Agrobiologia (CNPAB) |
|
|
Biblioteca |
ID |
Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
Fechar
|
| Nenhum registro encontrado para a expressão de busca informada. |
|
|
