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Registro Completo |
Biblioteca(s): |
Embrapa Clima Temperado. |
Data corrente: |
18/12/2012 |
Data da última atualização: |
18/12/2012 |
Tipo da produção científica: |
Resumo em Anais de Congresso |
Autoria: |
ACCORSI, G. B.; ROSSAROLLA, M. D.; TOMAZETTI, T. C.; MONTEIRO, A. de M.; AGUILA, J. S. D.; AGUILA, L. S. H. D. |
Afiliação: |
Gabriel Brum Accorsi, Universidade Federal do Pampa; Márcia Denise Rossarolla, Universidade Federal do Pampa; Tiago Camponogara Tomazetti, Universidade Federal do Pampa; Aline de Melo Monteiro, Universidade Federal do Pampa; Juan Saavedra del Aguila, Universidade Federal do Pampa; LILIA SICHMANN HEIFFIG DEL AGUILA, CPACT. |
Título: |
Enraizamento de estacas de aceroleira utilizando extrato de tiritica. |
Ano de publicação: |
2012 |
Fonte/Imprenta: |
In: In: SALÃO INTERNACIONAL DE ENSINO, EXTENSÃO E PESQUISA, 4., 2012. Bagé. Compartilhe saberes, Vivencie experiências e almeje sustetabilidade: anais. Bagé: Unipampa, 2012. |
Idioma: |
Português |
Palavras-Chave: |
Tiritica. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/72461/1/3.pdf
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Marc: |
LEADER 00652nam a2200169 a 4500 001 1942954 005 2012-12-18 008 2012 bl uuuu u00u1 u #d 100 1 $aACCORSI, G. B. 245 $aEnraizamento de estacas de aceroleira utilizando extrato de tiritica.$h[electronic resource] 260 $aIn: In: SALÃO INTERNACIONAL DE ENSINO, EXTENSÃO E PESQUISA, 4., 2012. Bagé. Compartilhe saberes, Vivencie experiências e almeje sustetabilidade: anais. Bagé: Unipampa$c2012 653 $aTiritica 700 1 $aROSSAROLLA, M. D. 700 1 $aTOMAZETTI, T. C. 700 1 $aMONTEIRO, A. de M. 700 1 $aAGUILA, J. S. D. 700 1 $aAGUILA, L. S. H. D.
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Embrapa Clima Temperado (CPACT) |
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Registro Completo
Biblioteca(s): |
Embrapa Gado de Corte. |
Data corrente: |
01/02/2008 |
Data da última atualização: |
21/07/2011 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
Internacional - A |
Autoria: |
GALLO, P. H; MICHELETTI, P. L.; BOLDRINI, K. R.; RISSO-PASCOLOTTO, C.; PAGLIARINI, M. S.; VALLE, C. B. do. |
Afiliação: |
Patrícia Helena Gallo, UEM; Pamela Lonardoni Micheletti, UEM; Kellen Regina Boldrini, UEM; Claudicéia Risso-Pascotto, UEM; Maria Suely Pagliarini, UEM; Cacilda Borges do Valle, CNPGC. |
Título: |
2n Gamete formation in the genus Brachiaria (Poaceae: Paniceae). |
Ano de publicação: |
2007 |
Fonte/Imprenta: |
Euphytica, Wageningen, Holanda, v. 154, n. 2, p. 255-260, 2007. |
Idioma: |
Inglês |
Notas: |
CNPGC. |
Conteúdo: |
Microsporogenesis of several Brachiaria species of the Brazilian collection at Embrapa Beef Cattle has been analyzed in detail. This paper reports abnormal cytokinesis in three accessions of three different species (Brachiaria humidicola, 2n = 4x = 36, Brachiaria decumbens, 2n = 4x = 36, and Brachiaria dura, 2n = 6x = 54). Chromosomes paired in bi-, tri-, and quadrivalents in these accessions, whereas chromosome segregation at meiosis I was characterized by exclusion of laggards as micronuclei. In a high number of meiocytes, the first sign of cytokinesis appeared only in metaphase II and did not divide the meiocyte into a dyad. Total absence of cytokinesis was also detected among meiocytes in the second division. Since in both cases the two metaphase plates were very close, they favored the rejoining of chromosome sets after anaphase II and formed a restitutional nucleus in telophase II. Second cytokinesis occurred after telophase II in most meiocytes. Monads, dyads, and triads with n or 2n nuclei were observed among meiotic products. The 2n gametes observed correspond to the first division restitution (FDR). The number of affected cells in each accession was variable, but the number of microspores with restitutional nucleus, including those scored in tetrads and the released ones, did not exceed 9%. Although polyploidy is common in the genus Brachiaria, its origin is still unclear. Current results suggest that 2n gametes may have contributed to the evolutionary history of the genus. MenosMicrosporogenesis of several Brachiaria species of the Brazilian collection at Embrapa Beef Cattle has been analyzed in detail. This paper reports abnormal cytokinesis in three accessions of three different species (Brachiaria humidicola, 2n = 4x = 36, Brachiaria decumbens, 2n = 4x = 36, and Brachiaria dura, 2n = 6x = 54). Chromosomes paired in bi-, tri-, and quadrivalents in these accessions, whereas chromosome segregation at meiosis I was characterized by exclusion of laggards as micronuclei. In a high number of meiocytes, the first sign of cytokinesis appeared only in metaphase II and did not divide the meiocyte into a dyad. Total absence of cytokinesis was also detected among meiocytes in the second division. Since in both cases the two metaphase plates were very close, they favored the rejoining of chromosome sets after anaphase II and formed a restitutional nucleus in telophase II. Second cytokinesis occurred after telophase II in most meiocytes. Monads, dyads, and triads with n or 2n nuclei were observed among meiotic products. The 2n gametes observed correspond to the first division restitution (FDR). The number of affected cells in each accession was variable, but the number of microspores with restitutional nucleus, including those scored in tetrads and the released ones, did not exceed 9%. Although polyploidy is common in the genus Brachiaria, its origin is still unclear. Current results suggest that 2n gametes may have contributed to the evolutionary history of t... Mostrar Tudo |
Palavras-Chave: |
Brachiaria dura; Braquiária; Brasil; Campo Grande; Feed crops; Feed grasses; Mato Grosso do Sul. |
Thesagro: |
Brachiaria Decumbens; Brachiaria Humidicola; Citogenética Vegetal; Gramínea Forrageira; Melhoramento Genético Vegetal; Planta Forrageira; Poliploidia. |
Thesaurus NAL: |
Brazil; cytogenetics; plant breeding; polyploidy. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/38215/1/fulltext.pdf
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Marc: |
LEADER 02621naa a2200409 a 4500 001 1326409 005 2011-07-21 008 2007 bl uuuu u00u1 u #d 100 1 $aGALLO, P. H 245 $a2n Gamete formation in the genus Brachiaria (Poaceae$bPaniceae). 260 $c2007 500 $aCNPGC. 520 $aMicrosporogenesis of several Brachiaria species of the Brazilian collection at Embrapa Beef Cattle has been analyzed in detail. This paper reports abnormal cytokinesis in three accessions of three different species (Brachiaria humidicola, 2n = 4x = 36, Brachiaria decumbens, 2n = 4x = 36, and Brachiaria dura, 2n = 6x = 54). Chromosomes paired in bi-, tri-, and quadrivalents in these accessions, whereas chromosome segregation at meiosis I was characterized by exclusion of laggards as micronuclei. In a high number of meiocytes, the first sign of cytokinesis appeared only in metaphase II and did not divide the meiocyte into a dyad. Total absence of cytokinesis was also detected among meiocytes in the second division. Since in both cases the two metaphase plates were very close, they favored the rejoining of chromosome sets after anaphase II and formed a restitutional nucleus in telophase II. Second cytokinesis occurred after telophase II in most meiocytes. Monads, dyads, and triads with n or 2n nuclei were observed among meiotic products. The 2n gametes observed correspond to the first division restitution (FDR). The number of affected cells in each accession was variable, but the number of microspores with restitutional nucleus, including those scored in tetrads and the released ones, did not exceed 9%. Although polyploidy is common in the genus Brachiaria, its origin is still unclear. Current results suggest that 2n gametes may have contributed to the evolutionary history of the genus. 650 $aBrazil 650 $acytogenetics 650 $aplant breeding 650 $apolyploidy 650 $aBrachiaria Decumbens 650 $aBrachiaria Humidicola 650 $aCitogenética Vegetal 650 $aGramínea Forrageira 650 $aMelhoramento Genético Vegetal 650 $aPlanta Forrageira 650 $aPoliploidia 653 $aBrachiaria dura 653 $aBraquiária 653 $aBrasil 653 $aCampo Grande 653 $aFeed crops 653 $aFeed grasses 653 $aMato Grosso do Sul 700 1 $aMICHELETTI, P. L. 700 1 $aBOLDRINI, K. R. 700 1 $aRISSO-PASCOLOTTO, C. 700 1 $aPAGLIARINI, M. S. 700 1 $aVALLE, C. B. do 773 $tEuphytica, Wageningen, Holanda$gv. 154, n. 2, p. 255-260, 2007.
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