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 | Acesso ao texto completo restrito à biblioteca da Embrapa Gado de Leite. Para informações adicionais entre em contato com cnpgl.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Gado de Leite. |
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Data corrente: |
28/12/2018 |
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Data da última atualização: |
24/01/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MORAIS, L. C.; SOUZA SOBRINHO, F. de; TECHIO, V. H. |
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Afiliação: |
L. C. Morais, UFLA; FAUSTO DE SOUZA SOBRINHO, CNPGL; V. H. Techio, UFLA. |
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Título: |
Comparative microsporogenesis between diploid and tetraploid plants of Brachiaria ruziziensis and their progenies. |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
South African Journal of Botany, v. 119, p. 258-264, 2018. |
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DOI: |
10.1016/j.sajb.2018.09.018 |
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Idioma: |
Inglês |
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Conteúdo: |
Abstract Microsporogenesis studies in Brachiaria have been concentrated in the species B. ruziziensis, B. decumbens and B.brizantha and hybrids because they have great importance as forage. Besides the sexual behavior, B. ruziziensis is among a minority of Brachiaria diploid species (2n = 2 × = 18), while most are tetraploid (2n= 4 × = 36) and apomictic. Brachiaria ruziziensis is used in intra and interspecific crossbreedings. For the success of interspecific hybridization, artificial tetraploidization of B. ruziziensis is necessary. The aim of this study was to compare the microsporogenesis in diploid and synthetic tetraploid B. ruziziensis plants and their respective progenies. The slides were prepared by squash technique and stained with 1% propionic carmine for meiocyte analysis and Alexander's stain for pollen viability. Abnormalities were found in all phases of meiosis in the families of the diploid and tetraploid plants and, in general, the rate was considered low, with the percentage varying according to the genotypes. The diploid family was considered more stable. For both families, there is a tendency to reduce the total frequency of abnormalities in the progenies compared to the mother plants. This response indicates that combinations of random crosses or self-fertilization among plants with the same ploidy level were favorable. For the diploid accessions, the pollen viability index was high, reaching up to 88.3%, whereas the tetraploidized plants presented lower values, reaching a maximum of 61.1%. The results will be of interest to researchers involved in tropical forage breeding or conducting intraspecific crosses, since the occurrence of regular meiosis in progenies ensures the formation of viable pollen grains. MenosAbstract Microsporogenesis studies in Brachiaria have been concentrated in the species B. ruziziensis, B. decumbens and B.brizantha and hybrids because they have great importance as forage. Besides the sexual behavior, B. ruziziensis is among a minority of Brachiaria diploid species (2n = 2 × = 18), while most are tetraploid (2n= 4 × = 36) and apomictic. Brachiaria ruziziensis is used in intra and interspecific crossbreedings. For the success of interspecific hybridization, artificial tetraploidization of B. ruziziensis is necessary. The aim of this study was to compare the microsporogenesis in diploid and synthetic tetraploid B. ruziziensis plants and their respective progenies. The slides were prepared by squash technique and stained with 1% propionic carmine for meiocyte analysis and Alexander's stain for pollen viability. Abnormalities were found in all phases of meiosis in the families of the diploid and tetraploid plants and, in general, the rate was considered low, with the percentage varying according to the genotypes. The diploid family was considered more stable. For both families, there is a tendency to reduce the total frequency of abnormalities in the progenies compared to the mother plants. This response indicates that combinations of random crosses or self-fertilization among plants with the same ploidy level were favorable. For the diploid accessions, the pollen viability index was high, reaching up to 88.3%, whereas ... Mostrar Tudo |
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Palavras-Chave: |
Meiotic behavior; Pollen viability. |
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Thesaurus Nal: |
Pollen; Urochloa. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02449naa a2200205 a 4500
001 2102602
005 2023-01-24
008 2018 bl uuuu u00u1 u #d
024 7 $a10.1016/j.sajb.2018.09.018$2DOI
100 1 $aMORAIS, L. C.
245 $aComparative microsporogenesis between diploid and tetraploid plants of Brachiaria ruziziensis and their progenies.$h[electronic resource]
260 $c2018
520 $aAbstract Microsporogenesis studies in Brachiaria have been concentrated in the species B. ruziziensis, B. decumbens and B.brizantha and hybrids because they have great importance as forage. Besides the sexual behavior, B. ruziziensis is among a minority of Brachiaria diploid species (2n = 2 × = 18), while most are tetraploid (2n= 4 × = 36) and apomictic. Brachiaria ruziziensis is used in intra and interspecific crossbreedings. For the success of interspecific hybridization, artificial tetraploidization of B. ruziziensis is necessary. The aim of this study was to compare the microsporogenesis in diploid and synthetic tetraploid B. ruziziensis plants and their respective progenies. The slides were prepared by squash technique and stained with 1% propionic carmine for meiocyte analysis and Alexander's stain for pollen viability. Abnormalities were found in all phases of meiosis in the families of the diploid and tetraploid plants and, in general, the rate was considered low, with the percentage varying according to the genotypes. The diploid family was considered more stable. For both families, there is a tendency to reduce the total frequency of abnormalities in the progenies compared to the mother plants. This response indicates that combinations of random crosses or self-fertilization among plants with the same ploidy level were favorable. For the diploid accessions, the pollen viability index was high, reaching up to 88.3%, whereas the tetraploidized plants presented lower values, reaching a maximum of 61.1%. The results will be of interest to researchers involved in tropical forage breeding or conducting intraspecific crosses, since the occurrence of regular meiosis in progenies ensures the formation of viable pollen grains.
650 $aPollen
650 $aUrochloa
653 $aMeiotic behavior
653 $aPollen viability
700 1 $aSOUZA SOBRINHO, F. de
700 1 $aTECHIO, V. H.
773 $tSouth African Journal of Botany$gv. 119, p. 258-264, 2018.
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| 1. |  | FERNANDES, D. M.; BERTANI, R. M. de A.; VIDAL, A. de A.; FISCHER, I. H. Doses de composto de lodo de esgoto na cultura da mamona. In: CONGRESSO BRASILEIRO DE MAMONA, 5.; SIMPÓSIO INTERNACIONAL DE OLEAGINOSAS ENERGÉTICAS, 2.; FÓRUM CAPIXABA DE PINHÃO-MANSO, 1., 2012, Guarapari. Desafios e Oportunidades: anais. Campina Grande: Embrapa Algodão, 2012. p. 80| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Algodão. |
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| 3. | | ABREU, J. A. A. DE; SOARES, A. DE A. V.; MORATO, V. T.; BERTANI, R. M. DE A.; MENDES, A. M.; DEUS, A. C. F. Avaliação da produtividade e dos teores de P na parte aérea do feijoeiro sob diferentes níveis de adubação fosfatada. In: ENCONTRO PAULISTA DE CIÊNCIA DO SOLO, 5., 2024, Botucatu. Avanços e novas tecnologias na Ciência do Solo: anais. São Paulo: Sociedade Brasileira de Ciência do Solo, 2024. 1 p.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Territorial. |
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| 4. | | FREDERICO, I. M. C.; BERTANI, R. M. DE A.; SOARES, A. DE A. V.; KANO, C.; FISCHER, I. H.; SILVA, M. DE A. Aplicação de fósforo no crescimento e produtividade do feijoeiro em solos com alto e baixo teor de P. In: ENCONTRO PAULISTA DE CIÊNCIA DO SOLO, 5., 2024, Botucatu. Avanços e novas tecnologias na Ciência do Solo: anais. São Paulo: Sociedade Brasileira de Ciência do Solo, 2024. 1 p.| Tipo: Resumo em Anais de Congresso |
| Biblioteca(s): Embrapa Territorial. |
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| 5. | | ALMEIDA. A. M. de; BERTANI, R. M. de A.; FISCHER, I. H.; AMARAL, J. G. C. do; FURLANETO, F. de P. B.; VIDAL, A. de A. Diagnóstico da cadeia produtiva de oleaginosas na região Centro Oeste, SP. In: CONGRESSO BRASILEIRO DE MAMONA, 4.; SIMPÓSIO INTERNACIONAL DE OLEAGINOSAS ENERGÉTICAS, 1., 2010, João Pessoa. Inclusão social e energia: anais. Campina Grande: Embrapa Algodão, 2010.| Biblioteca(s): Embrapa Algodão. |
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| 6. | | FISCHER, I. H.; ALVES, S. A. M.; ALMEIDA, A. M. de; ARRUDA, M. C. de; BERTANI, R. M. de A.; GARCIA, M. J. De M. Elaboração e validação de escala diagramática para quantificação da severidade da antracnose em frutos de maracujá amarelo. Summa Phytopathologica, Botucatu, v. 35, n. 3, p. 226-228, 2009.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: B - 2 |
| Biblioteca(s): Embrapa Uva e Vinho. |
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| 7. | | SOARES, A. DE A. V. L.; RODRIGUES, F. E.; MATTOS, E. C.; URBANO, L. H.; PRADO, R. DE M.; BERTANI, R. M. DE A.; SILVA, A. P. R. DA; DEUS, A. C. F.; KANO, C.; FURLANETO, F. DE P. B. Contribution of Using Filter Cake and Vinasse as a Source of Nutrients for Sustainable Agriculture—A Review. Sustainability, v. 16, n. 5411, 2024. 19 p.| Tipo: Artigo em Periódico Indexado | Circulação/Nível: A - 2 |
| Biblioteca(s): Embrapa Territorial. |
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| 8. | | DEUS, A. C. F.; SILVA, A. P. R. DA; SILVA, L. J. R. DA; BERTANI. R. M. DE A.; SOARES, A. DE A. V. L.; KANO, C.; FERNANDES, D. M.; BULL, L. T. Innovations in studies on the quantification of the bioavailability of silicon in the soil. In: PRADO, R. DE M.; ETESAMI, H.; SRIVASTAVA, A. K. (ed.). Silicon advances for sustainable agriculture and human health: increased nutrition and disease prevention. Switzerland: Springer, 2024. p. 81-100.| Tipo: Capítulo em Livro Técnico-Científico |
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| Registros recuperados : 8 | |
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