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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
13/01/2011 |
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Data da última atualização: |
16/08/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
PESSIM, C.; PAGLIARINI, M. S.; JANK, L.; KANESHIMA, A. M. de S.; BONATO, A. B. M. |
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Afiliação: |
CLEIDE PESSIM, UNIVERSIDADE ESTADUAL DE MARINGÁ; MARIA SUELY PAGLIARINI, UNIVERSIDADE ESTADUAL DE MARINGÁ; LIANA JANK, CNPGC; ALICE MARIA DE SOUZA KANESHIMA, UNIVERSIDADE ESTADUAL DE MARINGÁ; ANDRÉA BEATRIZ MENDES BONATO, UNIVERSIDADE ESTADUAL DE MARINGÁ. |
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Título: |
Meiotic behavior in Panicum maximum Jacq. (Poaceae: Panicoideae: Paniceae): hybrids and their genitors. |
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Ano de publicação: |
2010 |
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Fonte/Imprenta: |
Acta Scientiarum. Agronomy, v. 32, n. 3, p. 417-422, 2010. |
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DOI: |
https://doi.org/10.4025/actasciagron.v32i3.6461 |
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Idioma: |
Português |
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Conteúdo: |
Panicum maximum Jacq. is one of the most cultivated grasses in the world. The intraspecific hybridization breeding program underway at Embrapa Beef Cattle aims at combining several agronomic characteristics in a single plant with high seed production. Four intraspecific hybrids originated from the cross between sexual tetraploid female plants with apomictic tetraploid male plants, including the genitors, were cytologically evaluated in the meiotic process throughout conventional methodology. Hybrids and genitors showed high meiotic stability. The percentage of abnormal cells among them ranged from 6.7 to 14.2%. Abnormalities recorded were irregular chromosome segregation, chromosome stickiness, and absence of the first cytokinesis, but the latter did not compromise pollen viability. Multivalent chromosome configurations at diakinesis, ranging from one to three quadrivalents, suggest that genetic recombination and introgression of some genes can be expected in the hybrids. Based on meiotic stability, the hybrids should be selected for high seed production, and the genitors could remain in the program participating in other intraspecific crosses. |
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Palavras-Chave: |
Híbridos interespecíficos; Programa de melhoramento. |
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Thesagro: |
Características Agronômicas; Gramínea Forrageira; Meiose; Melhoramento Genético Vegetal; Panicum Maximum; Pastagem; Produção de Sementes. |
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Thesaurus Nal: |
Meiosis; Panicum. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/25440/1/6461-40361-1-PB1.pdf
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Marc: |
LEADER 02126naa a2200313 a 4500
001 1873028
005 2023-08-16
008 2010 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.4025/actasciagron.v32i3.6461$2DOI
100 1 $aPESSIM, C.
245 $aMeiotic behavior in Panicum maximum Jacq. (Poaceae$bPanicoideae: Paniceae): hybrids and their genitors.
260 $c2010
520 $aPanicum maximum Jacq. is one of the most cultivated grasses in the world. The intraspecific hybridization breeding program underway at Embrapa Beef Cattle aims at combining several agronomic characteristics in a single plant with high seed production. Four intraspecific hybrids originated from the cross between sexual tetraploid female plants with apomictic tetraploid male plants, including the genitors, were cytologically evaluated in the meiotic process throughout conventional methodology. Hybrids and genitors showed high meiotic stability. The percentage of abnormal cells among them ranged from 6.7 to 14.2%. Abnormalities recorded were irregular chromosome segregation, chromosome stickiness, and absence of the first cytokinesis, but the latter did not compromise pollen viability. Multivalent chromosome configurations at diakinesis, ranging from one to three quadrivalents, suggest that genetic recombination and introgression of some genes can be expected in the hybrids. Based on meiotic stability, the hybrids should be selected for high seed production, and the genitors could remain in the program participating in other intraspecific crosses.
650 $aMeiosis
650 $aPanicum
650 $aCaracterísticas Agronômicas
650 $aGramínea Forrageira
650 $aMeiose
650 $aMelhoramento Genético Vegetal
650 $aPanicum Maximum
650 $aPastagem
650 $aProdução de Sementes
653 $aHíbridos interespecíficos
653 $aPrograma de melhoramento
700 1 $aPAGLIARINI, M. S.
700 1 $aJANK, L.
700 1 $aKANESHIMA, A. M. de S.
700 1 $aBONATO, A. B. M.
773 $tActa Scientiarum. Agronomy$gv. 32, n. 3, p. 417-422, 2010.
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Registro original: |
Embrapa Gado de Corte (CNPGC) |
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| Registros recuperados : 6 | |
| 5. |  | MENDES-BONATO, A. B.; FELISMINO, M. F.; KANESHIMA, A. M. S.; PESSIM, C.; CALISTO, V.; PAGLIARINI, M. S.; VALLE, C. B. do. Abnormal meiosis in tetraploid genotypes of Brachiaria brizantha (Poaceae) induced by colchicine: its implications for breeding. Journal of Applied Genetics, v. 50, n. 2, p. 83-87, 2009.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 2 |
| Biblioteca(s): Embrapa Gado de Corte. |
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| 6. | | SOUZA-KANESHIMA, A. M. de; SIMIONI, C.; FELISMINO, M. F.; MENDES-BONATO, A. B.; RISSO-PASCOTTO, C.; PESSIM, C.; PAGLIARINI, M. S.; VALLE, C. B. do. Meiotic behaviour in the first interspecific hybrids between Brachiaria brizantha and Brachiaria decumbens. Plant Breeding, v. 129, n. 2, p. 186-191, 2010.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Gado de Corte. |
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| Registros recuperados : 6 | |
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| Nenhum registro encontrado para a expressão de busca informada. |
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