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| Registros recuperados : 15 | |
| 2. |  | KAWAMOTO, T. S.; VIANA, J. H. M.; FARIA, O. A. C.; FIGUEIREDO, R. A. Ovarian characteristics and somatic development in 2 to 5 months old female Nelore (Bos taurus indicus) calves. Animal Reproduction, v. 15, Suppl.1, p.1086, 2018. Edição dos resumos do 10th International Ruminant Reproduction Symposium (IRRS 2018), 2018., Foz do Iguaçu-PR. CBRA.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 4. | | FARIA, O. A. C.; CAIXETA, F. M.; DIAS, L. R. O.; SPRÍCIGO, J. F. W.; DODE, M. A. N. Effect of the anticipation of intrafollicular transfer of immature oocytes (IFIOT) in the nuclear maturation of bovine oocyte. Animal Reproduction, v. 16, n. 3, p. 587, Jul./Sept. 2019. Edição dos Proceedings of the 33nd Annual Meeting of the Brazilian Embryo Technology Society (SBTE); Ilha da Comandatuba, BA, Brazil, August 15th to 19th, 2019.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 5. | | VIANA, J. H. M.; PEREIRA, N. E. S.; FARIA, O. A. C.; DIAS, L. R. O.; OLIVEIRA, E. R.; FERNANDES, C. A. C.; SIQUEIRA, L. G. B. Active immunization against GnRH as an alternative therapeutic approach for the management of Bos indicus oocyte donors diagnosed with chronic cystic ovarian disease. Theriogenology, v. 172, p. 133-141, 2021.| Biblioteca(s): Embrapa Gado de Leite; Embrapa Recursos Genéticos e Biotecnologia. |
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| 6. | | KAWAMOTO, T. S.; VIANA, J. H. M.; PONTELO, T. P.; FRANCO, M. M.; FARIA, O. A. C. de; FIDELIS, A. A. G.; VARGAS, L. N.; FIGUEIREDO, R. A. Dynamics of the reproductive changes and acquisition of Oocyte competence in Nelore (Bos taurus indicus) Calves during the early and intermediate prepubertal periods. Animals, v. 12, n. 15, 2022. 2137.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 7. | | DIAS, L. R. O.; SILVA, V. A. O.; FARIA, O. A. C.; CAIXETA, F. M. C.; SPRÍCIGO, J. F. W.; DODE, M. A. N. Embryos production from bovine oocytes matured in vivo using intrafollicular transfer of immature oocytes (TIFOI). Animal Reproduction, v. 15, n. 3, p. 428, Jul./Sept. 2018. Proceedings of the 32nd Annual Meeting of the Brazilian Embryo Technology Society (SBTE); Florianópolis, SC, Brazil, August 16th to 18th, 2018. Abstracts.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 8. | | KAWAMOTO, T. S.; VIANA, J. H. M.; PONTELO, T. P.; FARIA, O. A. C.; FIDELIS, A. A. G.; DODE, M. A. N.; VARGAS, L. N.; FIGUEIREDO, R. A. Features and development potential of oocytes collected from Nelore (Bos tuarus indicus) calves and the early and late prepubertal phase. Reproduction, Fertility and Development, v. 34, n. 2, p. 302, 2022 Edição dos Proceedings of the 48th International Embryo Technology Society Annual Meeting, Savannah, 2022.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 9. | | SILVA, V. A.; FARIA, O. A. C.; DIAS, L. R. O.; CAIXETA, F. M. C.; SPRÍCIGO, J. F. W.; DODE, M. A. N. Inhibition of meiosis resumption in bovine oocytes to be used in the intrafollicular transfer of immature oocyte (TIFOI). Animal Reproduction, v. 15, n. 3, p. 456, Jul./Sept. 2018. Proceedings of the 32nd Annual Meeting of the Brazilian Embryo Technology Society (SBTE); Florianópolis, SC, Brazil, August 16th to 18th, 2018. Abstracts.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 10. | | KAWAMOTO, T. S.; PONTELO, T. P.; FARIA, O. A. C. de; FIDELIS, A. A. G.; DODE, M. A. N.; VIANA, J. H. M.; FIGUEIREDO, R. A. OPU and IVEP from non-stimulated 2-4 and 8-10 months old Nelore (Bos taurus indicus) donors. Animal Reproduction v.16, n.3, p.597, Jul./Sept. 2019. Edição dos Proceedings of the 33nd Annual Meeting of the Brazilian Embryo Technology Society (SBTE); Ilha da Comandatuba, BA, Brazil, August 15th to 19th, 2019.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 11. | | FARIA, O. A. C.; KAWAMOTO, T. S.; DIAS, L. R. O.; FIDELIS, A. A. G.; LEME, L. O.; CAIXETA, F. M. C.; GOMES, A. C. M. M.; SPRÍCIGO, J. F. W.; DODE, M. A. N. Maturation system affects lipid accumulation in bovine oocytes. Reproduction, Fertility and Development, v. 33, n. 5, 372-380, 2021.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 12. | | SANTOS, I. R.; TOLEDO, R. B.; FARIA, O. A. C.; LEME, L. O.; DODE, M. A. N.; GUIMARAES JUNIOR, R.; MAGNABOSCO, C. de U.; BONFIM JUNIOR, S.; EIFERT, E. da C.; MARTINS, C. F. Effect of two different feeding strategies on prepubertal Nellore Heifer's growth performance and oocytes and in vitro embryo production. Animal Reproduction, v. 19, n. 1, 2022. Abstract ISABR 2020/2021.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia. |
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| 13. | | SANTOS, I. R.; TOLEDO, R. B.; FARIA, O. A. C.; LEME, L. O.; DODE, M. A. N.; GUIMARAES JUNIOR, R.; MAGNABOSCO, C. de U.; BONFIM JUNIOR, S.; EIFERT, E. da C.; MARTINS, C. F. Effect of two different feeding strategies on prepubertal Nellore Heifer's growth performance and oocytes and in vitro embryo production. Animal Reproduction, v. 19, n. 1, 2022. Abstract ISABR 2020/2021.| Biblioteca(s): Embrapa Cerrados. |
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| 14. | | SILVA, T. C. F.; DODE, M. A. N.; BRAGA, T. F.; MARQUES, M. G.; VARGAS, L. N.; FARIA, O. A. C. de; SOUZA, A. P. de; ALBRING, D.; CAETANO, A. R.; FRANCO, M. M. Cumulus-oocyte complexes from sows show differences in lipid metabolism compared to cumulus-oocyte complexes from prepubertal gilts during in vitro maturation. Molecular Reproduction & Development, v. 90, n. 5, p. 323-335. 2023.| Biblioteca(s): Embrapa Recursos Genéticos e Biotecnologia; Embrapa Suínos e Aves. |
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| 15. | | TOLEDO, R. B. de; FARIA, O. A. C. de; LEME, L. O.; MAGNABOSCO, C. de U.; GUIMARAES JUNIOR, R.; EIFERT, E. da C.; SANTOS, I. R. dos; OLIVEIRA, R. V.; DODE, M. A. N.; MALAQUIAS, J. V.; PIVATO, I.; MARTINS, C. F. Effect of food supplementation on in vitro embryo production and growth performance in prepubertal Nelore heifers. Animal Biotechnology, 2023.| Biblioteca(s): Embrapa Cerrados; Embrapa Recursos Genéticos e Biotecnologia. |
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| Registros recuperados : 15 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Cerrados. |
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Data corrente: |
05/10/2010 |
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Data da última atualização: |
02/08/2013 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
LAVRES JUNIOR, J.; SANTOS JUNIOR, J. de D. G. dos; MONTEIRO, F. A. |
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Afiliação: |
JOSÉ LAVRES JUNIOR, CENA/USP; JOÃO DE DEUS GOMES DOS SANTOS JUNIOR, CPAC; FRANCISCO ANTONIO MONTEIRO, ESALQ. |
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Título: |
Nitrate reductase activity and spad readings in leaf tissues of guinea grass submitted to nitrogen and potassium rates. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Revista Brasileira de Ciência do Solo, v. 34, p. 801-809, 2010. |
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Idioma: |
Inglês |
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Conteúdo: |
Nitrogen and K deficiency are among the most yield limiting factors in Brazilian pastures. The lack of these nutrients can hamper the chlorophyll biosynthesis and N content in plant tissues. A greenhouse experiment was carried out to evaluate the relationship among N and K concentrations, the indirect determination of chlorophyll content (SPAD readings), nitrate reductase activity (RNO3 -) in newly expanded leaf lamina (NL) and the dry matter yield for plant tops of Mombaça grass (Panicum maximum Jacq.). A fractionated 52 factorial design was used, with 13 combinations of N and K rates in the nutrient solution. The experimental units were arranged in a randomized block design, with four replications. Plants were harvested twice. The first harvest occurred 36 days after seedling transplanting and the second 29 days after the first. Significance occurred for the interaction between the N and K rates to SPAD readings and to RNO3 - assessment taken on the NL during the first growth. Besides, RNO3 - and SPAD readings increased only with the NL N concentration, reaching the highest values of both variables up to about 25 g kg-1, but were ratively constant at higher leaf N. Significant relationships either between SPAD readings or RNO3 - activity and shoot dry mass weight were also observed. The critical levels of N concentration in the NL were, respectively, 22 and 17g kg-1 in the first and second harvest. Thus, SPAD instrument and RNO3 assessment can be used as complementary tools to evaluate the N status in forage grass. MenosNitrogen and K deficiency are among the most yield limiting factors in Brazilian pastures. The lack of these nutrients can hamper the chlorophyll biosynthesis and N content in plant tissues. A greenhouse experiment was carried out to evaluate the relationship among N and K concentrations, the indirect determination of chlorophyll content (SPAD readings), nitrate reductase activity (RNO3 -) in newly expanded leaf lamina (NL) and the dry matter yield for plant tops of Mombaça grass (Panicum maximum Jacq.). A fractionated 52 factorial design was used, with 13 combinations of N and K rates in the nutrient solution. The experimental units were arranged in a randomized block design, with four replications. Plants were harvested twice. The first harvest occurred 36 days after seedling transplanting and the second 29 days after the first. Significance occurred for the interaction between the N and K rates to SPAD readings and to RNO3 - assessment taken on the NL during the first growth. Besides, RNO3 - and SPAD readings increased only with the NL N concentration, reaching the highest values of both variables up to about 25 g kg-1, but were ratively constant at higher leaf N. Significant relationships either between SPAD readings or RNO3 - activity and shoot dry mass weight were also observed. The critical levels of N concentration in the NL were, respectively, 22 and 17g kg-1 in the first and second harvest. Thus, SPAD instrument and RNO3 assessment can be used as complementary tool... Mostrar Tudo |
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Palavras-Chave: |
Guinea Grass; Pasture. |
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Thesagro: |
Clorofila; Estado Nutricional; Gramínea Forrageira. |
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Thesaurus NAL: |
chlorophyll; nitrogen; nutritional status; potassium. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/86935/1/lavres-junior-J-01-2010.pdf
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Marc: |
LEADER 02298naa a2200253 a 4500
001 1863616
005 2013-08-02
008 2010 bl uuuu u00u1 u #d
100 1 $aLAVRES JUNIOR, J.
245 $aNitrate reductase activity and spad readings in leaf tissues of guinea grass submitted to nitrogen and potassium rates.
260 $c2010
520 $aNitrogen and K deficiency are among the most yield limiting factors in Brazilian pastures. The lack of these nutrients can hamper the chlorophyll biosynthesis and N content in plant tissues. A greenhouse experiment was carried out to evaluate the relationship among N and K concentrations, the indirect determination of chlorophyll content (SPAD readings), nitrate reductase activity (RNO3 -) in newly expanded leaf lamina (NL) and the dry matter yield for plant tops of Mombaça grass (Panicum maximum Jacq.). A fractionated 52 factorial design was used, with 13 combinations of N and K rates in the nutrient solution. The experimental units were arranged in a randomized block design, with four replications. Plants were harvested twice. The first harvest occurred 36 days after seedling transplanting and the second 29 days after the first. Significance occurred for the interaction between the N and K rates to SPAD readings and to RNO3 - assessment taken on the NL during the first growth. Besides, RNO3 - and SPAD readings increased only with the NL N concentration, reaching the highest values of both variables up to about 25 g kg-1, but were ratively constant at higher leaf N. Significant relationships either between SPAD readings or RNO3 - activity and shoot dry mass weight were also observed. The critical levels of N concentration in the NL were, respectively, 22 and 17g kg-1 in the first and second harvest. Thus, SPAD instrument and RNO3 assessment can be used as complementary tools to evaluate the N status in forage grass.
650 $achlorophyll
650 $anitrogen
650 $anutritional status
650 $apotassium
650 $aClorofila
650 $aEstado Nutricional
650 $aGramínea Forrageira
653 $aGuinea Grass
653 $aPasture
700 1 $aSANTOS JUNIOR, J. de D. G. dos
700 1 $aMONTEIRO, F. A.
773 $tRevista Brasileira de Ciência do Solo$gv. 34, p. 801-809, 2010.
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