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 | Acesso ao texto completo restrito à biblioteca da Embrapa Recursos Genéticos e Biotecnologia. Para informações adicionais entre em contato com cenargen.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
24/09/2020 |
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Data da última atualização: |
13/01/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
COSTA, F. M.; SILVA, N. C. de A.; VIDAL, R.; CLEMENT, C. R.; ALVES, R. P.; BIANCHINI, P. C.; HAVERROTH, M.; FREITAS, F. de O.; VEASEY, E. A. |
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Afiliação: |
Flaviane Malaquias Costa, ESALQ; Natalia Carolina de Almeida Silva, Technological University of Uruguay; Rafael Vidal, Faculty of Agronomy, University of the Republic, Montevideo, Uruguay; Charles Roland Clement, National Research Institute of Amazonia, Manaus, AM; Rubana Palhares Alves, National Research Institute of Amazonia, Manaus, AM; PAOLA CORTEZ BIANCHINI, CPATSA; MOACIR HAVERROTH, CPAF-AC; FABIO OLIVEIRA FREITAS, Cenargen; Elizabeth Ann Veasey, ESALQ. |
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Título: |
Entrelaçado, a rare maize race conserved in Southwestern Amazonia. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Genetic Resources and Crop Evolution, v. 68, p. 51-58, 2021. |
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DOI: |
https://doi.org/10.1007/s10722-020-01008-0 |
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Idioma: |
Inglês |
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Conteúdo: |
Maize (Zea mays spp. mays L.) is the major domesticated cereal of the Americas and is of great relevance for global food security. For a long time, Amazonia represented an empty space in the racial distribution maps of this species, due to the lack of collections and the idea that locally developed races became extinct during European colonization. However, a native race had been described in Brazilian Amazonia, the Entrelaçado race, and a new study placed Amazonia on the map again, with a proposal for a center of diversification in Southwestern Amazonia. We prospected maize in the Brazilian states of Acre and Rondônia (Southwestern Brazilian Amazonia) and found floury landraces belonging to the Entrelaçado race, rare in existing collections and often considered extinct in the field. We collected indigenous and local names, general and specific uses for Entrelaçado, and characterized these accessions to compare them with other Brazilian floury maize races, based on data from the literature. Floury maize from the Southwest formed a coherent group in the cluster analysis, which grouped with Entrelaçado from the literature, confirming its identification and demonstrating that this race is conserved in Southwestern Amazonia. |
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Palavras-Chave: |
Acre; Raça Entrelaçado; Recursos genéticos de raças terrestres; Rondônia; Southwestern Amazonia; Sudoeste da Amazônia. |
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Thesagro: |
Conservação; Milho; Recurso Genético; Segurança Alimentar. |
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Thesaurus Nal: |
Conservation banks; Corn; Genetic resources; Zea mays subsp. mays. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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Marc: |
LEADER 02395naa a2200397 a 4500
001 2125084
005 2021-01-13
008 2021 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1007/s10722-020-01008-0$2DOI
100 1 $aCOSTA, F. M.
245 $aEntrelaçado, a rare maize race conserved in Southwestern Amazonia.$h[electronic resource]
260 $c2021
520 $aMaize (Zea mays spp. mays L.) is the major domesticated cereal of the Americas and is of great relevance for global food security. For a long time, Amazonia represented an empty space in the racial distribution maps of this species, due to the lack of collections and the idea that locally developed races became extinct during European colonization. However, a native race had been described in Brazilian Amazonia, the Entrelaçado race, and a new study placed Amazonia on the map again, with a proposal for a center of diversification in Southwestern Amazonia. We prospected maize in the Brazilian states of Acre and Rondônia (Southwestern Brazilian Amazonia) and found floury landraces belonging to the Entrelaçado race, rare in existing collections and often considered extinct in the field. We collected indigenous and local names, general and specific uses for Entrelaçado, and characterized these accessions to compare them with other Brazilian floury maize races, based on data from the literature. Floury maize from the Southwest formed a coherent group in the cluster analysis, which grouped with Entrelaçado from the literature, confirming its identification and demonstrating that this race is conserved in Southwestern Amazonia.
650 $aConservation banks
650 $aCorn
650 $aGenetic resources
650 $aZea mays subsp. mays
650 $aConservação
650 $aMilho
650 $aRecurso Genético
650 $aSegurança Alimentar
653 $aAcre
653 $aRaça Entrelaçado
653 $aRecursos genéticos de raças terrestres
653 $aRondônia
653 $aSouthwestern Amazonia
653 $aSudoeste da Amazônia
700 1 $aSILVA, N. C. de A.
700 1 $aVIDAL, R.
700 1 $aCLEMENT, C. R.
700 1 $aALVES, R. P.
700 1 $aBIANCHINI, P. C.
700 1 $aHAVERROTH, M.
700 1 $aFREITAS, F. de O.
700 1 $aVEASEY, E. A.
773 $tGenetic Resources and Crop Evolution$gv. 68, p. 51-58, 2021.
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Embrapa Recursos Genéticos e Biotecnologia (CENARGEN) |
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Registro Completo
|
Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
09/11/2011 |
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Data da última atualização: |
09/11/2011 |
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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: |
RICCI, G. C. L.; SOUZA-KANESHIMA, A. M. de S.; FELISMINO, M. F.; MENDES-BONATO; PAGLIARINI, M. S.; VALLE, C. B. do. |
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Afiliação: |
GLÉIA CRISTINA LAVERDE RICCI, UEM; ALICE MARIA DE SOUZA-KANESHIMA, UEM; MARIANA FERRARI FELISMINO, UEM; ANDREA BEATRIZ MENDES-BONATO, UEM; MARIA SUELY PAGLIARINI, UEM; CACILDA BORGES DO VALLE, CNPGC. |
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Título: |
Chromosome numbers and meiotic analysis in the pre-breeding of Brachiaria decumbens (Poaceae). |
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Ano de publicação: |
2011 |
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Fonte/Imprenta: |
Journal of Genetics, v. 90, No. 2, p. 289-294, Aug. 2011. |
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Idioma: |
Inglês |
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Notas: |
Indian Academy of Sciences. |
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Conteúdo: |
A total of 44 accessions of Brachiaria decumbens were analysed for chromosome count and meiotic behaviour in order to identify potential progenitors for crosses. Among them, 15 accessions presented 2n = 18; 27 accessions, 2n = 36; and 2 accessions, 2n = 45 chromosomes. Among the diploid accessions, the rate of meiotic abnormalities was low, ranging from 0.82% to 7.93%. In the 27 tetraploid accessions, the rate of meiotic abnormalities ranged from 18.41% to 65.83%. The most common meiotic abnormalities were related to irregular chromosome segregation, but chromosome stickiness and abnormal cytokinesis were observed in low frequency. All abnormalities can compromise pollen viability by generating unbalanced gametes. Based on the chromosome number and meiotic stability, the present study indicates the apomictic tetraploid accessions that can act as male genitor to produce interspecific hybrids with B. ruziziensis or intraspecific hybrids with recently artificially tetraploidized accessions. In this paper we determined the chromosome number and evaluated the meiotic behaviour of 44 accessions of B. decumbens available at Embrapa Beef Cattle (Brazil) as a subsidy for the breeding programme. |
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Palavras-Chave: |
Braquiaria. |
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Thesagro: |
Brachiaria Decumbens; Gramínea Forrageira; Melhoramento Genético Vegetal; Pastagem. |
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Categoria do assunto: |
K Ciência Florestal e Produtos de Origem Vegetal |
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Marc: |
LEADER 01995naa a2200253 a 4500
001 1905355
005 2011-11-09
008 2011 bl uuuu u00u1 u #d
100 1 $aRICCI, G. C. L.
245 $aChromosome numbers and meiotic analysis in the pre-breeding of Brachiaria decumbens (Poaceae).$h[electronic resource]
260 $c2011
500 $aIndian Academy of Sciences.
520 $aA total of 44 accessions of Brachiaria decumbens were analysed for chromosome count and meiotic behaviour in order to identify potential progenitors for crosses. Among them, 15 accessions presented 2n = 18; 27 accessions, 2n = 36; and 2 accessions, 2n = 45 chromosomes. Among the diploid accessions, the rate of meiotic abnormalities was low, ranging from 0.82% to 7.93%. In the 27 tetraploid accessions, the rate of meiotic abnormalities ranged from 18.41% to 65.83%. The most common meiotic abnormalities were related to irregular chromosome segregation, but chromosome stickiness and abnormal cytokinesis were observed in low frequency. All abnormalities can compromise pollen viability by generating unbalanced gametes. Based on the chromosome number and meiotic stability, the present study indicates the apomictic tetraploid accessions that can act as male genitor to produce interspecific hybrids with B. ruziziensis or intraspecific hybrids with recently artificially tetraploidized accessions. In this paper we determined the chromosome number and evaluated the meiotic behaviour of 44 accessions of B. decumbens available at Embrapa Beef Cattle (Brazil) as a subsidy for the breeding programme.
650 $aBrachiaria Decumbens
650 $aGramínea Forrageira
650 $aMelhoramento Genético Vegetal
650 $aPastagem
653 $aBraquiaria
700 1 $aSOUZA-KANESHIMA, A. M. de S.
700 1 $aFELISMINO, M. F.
700 1 $aMENDES-BONATO
700 1 $aPAGLIARINI, M. S.
700 1 $aVALLE, C. B. do
773 $tJournal of Genetics$gv. 90, No. 2, p. 289-294, Aug. 2011.
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