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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
11/09/1997 |
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Data da última atualização: |
11/09/1997 |
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Autoria: |
PENHA, J. M. F.; DA SILVA, C. J.; BIANCHINI JUNIOR, I. |
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Afiliação: |
Universidade de Sao Carlos. PPG-ERN (Sao Carlos, SP); UFMT-IB (Cuiaba, MT). |
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Título: |
Demografia de folhas de Pontederia lanceplata Nuttal em uma area alagavel do Pantanal de Mato Grosso. |
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Ano de publicação: |
1994 |
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Fonte/Imprenta: |
In: CONGRESSO DE ECOLOGIA DO BRASIL, 2., 1994, Londrina. Programa e resumos... Londrina: Universidade Estadual de Londrina / Sociedade de Ecolgia do Brasil, 1994. |
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Páginas: |
p.131 |
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Idioma: |
Português |
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Conteúdo: |
O Pantanal de Mato Grosso e um extenso sistema alagavel localizado no centro da America do Sul. Nestes sistemas o pulso de inundacao e a maior forca seletiva controlando a biota - teoria do pulso de inundacao. Com objetivo de testar a generalidde desta teoria escolhemos uma especie de macrofita aquatica - Pontederia lanceolata - a fim de verificar como esta responde ao pulso de inundacao. Em campo, 9 quadrados, com area de o,25 m2 cada, foram delimitados. Foram selecionados, ao acaso, 3 plantas de cada quadrado e, acompanhou-se a variacao de suas caracteristicas ao pulso de inundacao aumentando a taxa de natalidade, a densidade, o comprimento medio, a area foliar, a longevidade e o numero de nascimento por corte, de suas folhas. O aumento da taxa de natalidade, de ramos ferteis, foi acompanhada pela diminuicao da taxa de natalidde de folhas. Estes aumentos estao relacionados a diminuicao do stress hidrico e aumento, da disponibilidade de nutrientes e de espaco para colonizacao. Dependendo da intensidade e duracao da estacao seca a planta pode ser anual ou perene. Os resultados aqui encontrados corroboram a teoria do pulso de inundacao. |
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Palavras-Chave: |
Aquatic plant; Pontederia lanceplata. |
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Thesagro: |
Botânica; Demografia; Flora; Planta Aquatica. |
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Thesaurus Nal: |
botany; demography; Pantanal. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01983naa a2200265 a 4500
001 1791602
005 1997-09-11
008 1994 bl uuuu u00u1 u #d
100 1 $aPENHA, J. M. F.
245 $aDemografia de folhas de Pontederia lanceplata Nuttal em uma area alagavel do Pantanal de Mato Grosso.
260 $c1994
300 $ap.131
520 $aO Pantanal de Mato Grosso e um extenso sistema alagavel localizado no centro da America do Sul. Nestes sistemas o pulso de inundacao e a maior forca seletiva controlando a biota - teoria do pulso de inundacao. Com objetivo de testar a generalidde desta teoria escolhemos uma especie de macrofita aquatica - Pontederia lanceolata - a fim de verificar como esta responde ao pulso de inundacao. Em campo, 9 quadrados, com area de o,25 m2 cada, foram delimitados. Foram selecionados, ao acaso, 3 plantas de cada quadrado e, acompanhou-se a variacao de suas caracteristicas ao pulso de inundacao aumentando a taxa de natalidade, a densidade, o comprimento medio, a area foliar, a longevidade e o numero de nascimento por corte, de suas folhas. O aumento da taxa de natalidade, de ramos ferteis, foi acompanhada pela diminuicao da taxa de natalidde de folhas. Estes aumentos estao relacionados a diminuicao do stress hidrico e aumento, da disponibilidade de nutrientes e de espaco para colonizacao. Dependendo da intensidade e duracao da estacao seca a planta pode ser anual ou perene. Os resultados aqui encontrados corroboram a teoria do pulso de inundacao.
650 $abotany
650 $ademography
650 $aPantanal
650 $aBotânica
650 $aDemografia
650 $aFlora
650 $aPlanta Aquatica
653 $aAquatic plant
653 $aPontederia lanceplata
700 1 $aDA SILVA, C. J.
700 1 $aBIANCHINI JUNIOR, I.
773 $tIn: CONGRESSO DE ECOLOGIA DO BRASIL, 2., 1994, Londrina. Programa e resumos... Londrina: Universidade Estadual de Londrina / Sociedade de Ecolgia do Brasil, 1994.
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Registro original: |
Embrapa Pantanal (CPAP) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Milho e Sorgo. Para informações adicionais entre em contato com cnpms.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
20/01/2006 |
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Data da última atualização: |
30/05/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MAGALHAES, J. V.; GARVIN, D. F.; WANG, Y. H.; SORRELLS, M. E.; KLEIN, P. E.; SCHAFFERT, R. E.; LI, L.; KOCHIAN, L. V. |
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Afiliação: |
JURANDIR VIEIRA DE MAGALHAES, CNPMS; ROBERT EUGENE SCHAFFERT, CNPMS. |
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Título: |
Comparative mapping of a major aluminum tolerance gene in sorghum and other species in the poaceae. |
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Ano de publicação: |
2004 |
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Fonte/Imprenta: |
Genetics, Maryland, v. 167, n. 4, p. 1905-1914, 2004. |
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Idioma: |
Inglês |
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Conteúdo: |
In several crop species within the Triticeae tribe of the grass family Poaceae, single major aluminum (Al) tolerance genes have been identified that effectively mitigate Al toxicity, a major abiotic constraint to crop production on acidic soils. However, the trait is quantitatively inherited in species within other tribes, and the possible ancestral relationships between major Al tolerance genes and QTL in the grasses remain unresolved. To help establish these relationships, we conducted a molecular genetic analysis of Al tolerance in sorghum and integrated our findings with those from previous studies performed in crop species belonging to different grass tribes. A single locus, AltSB, was found to control Al tolerance in two highly Al tolerant sorghum cultivars. Significant macrosynteny between sorghum and the Triticeae was observed for molecular markers closely linked to putatively orthologous Al tolerance loci present in the group 4 chromosomes of wheat, barley, and rye. However, AltSB was not located within the homeologous region of sorghum but rather mapped near the end of sorghum chromosome 3. Thus, AltSB not only is the first major Al tolerance gene mapped in a grass species that does not belong to the Triticeae, but also appears to be different from the major Al tolerance locus in the Triticeae. Intertribe map comparisons suggest that a major Al tolerance QTL on rice chromosome 1 is likely to be orthologous to AltSB, whereas another rice QTL on chromosome 3 is likely to correspond to the Triticeae group 4 Al tolerance locus. Therefore, this study demonstrates a clear evolutionary link between genes and QTL encoding the same trait in distantly related species within a single plant family MenosIn several crop species within the Triticeae tribe of the grass family Poaceae, single major aluminum (Al) tolerance genes have been identified that effectively mitigate Al toxicity, a major abiotic constraint to crop production on acidic soils. However, the trait is quantitatively inherited in species within other tribes, and the possible ancestral relationships between major Al tolerance genes and QTL in the grasses remain unresolved. To help establish these relationships, we conducted a molecular genetic analysis of Al tolerance in sorghum and integrated our findings with those from previous studies performed in crop species belonging to different grass tribes. A single locus, AltSB, was found to control Al tolerance in two highly Al tolerant sorghum cultivars. Significant macrosynteny between sorghum and the Triticeae was observed for molecular markers closely linked to putatively orthologous Al tolerance loci present in the group 4 chromosomes of wheat, barley, and rye. However, AltSB was not located within the homeologous region of sorghum but rather mapped near the end of sorghum chromosome 3. Thus, AltSB not only is the first major Al tolerance gene mapped in a grass species that does not belong to the Triticeae, but also appears to be different from the major Al tolerance locus in the Triticeae. Intertribe map comparisons suggest that a major Al tolerance QTL on rice chromosome 1 is likely to be orthologous to AltSB, whereas another rice QTL on chromosome 3 is likel... Mostrar Tudo |
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Thesagro: |
Sorghum bicolor. |
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Thesaurus NAL: |
aluminum. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02389naa a2200229 a 4500
001 1489102
005 2018-05-30
008 2004 bl uuuu u00u1 u #d
100 1 $aMAGALHAES, J. V.
245 $aComparative mapping of a major aluminum tolerance gene in sorghum and other species in the poaceae.$h[electronic resource]
260 $c2004
520 $aIn several crop species within the Triticeae tribe of the grass family Poaceae, single major aluminum (Al) tolerance genes have been identified that effectively mitigate Al toxicity, a major abiotic constraint to crop production on acidic soils. However, the trait is quantitatively inherited in species within other tribes, and the possible ancestral relationships between major Al tolerance genes and QTL in the grasses remain unresolved. To help establish these relationships, we conducted a molecular genetic analysis of Al tolerance in sorghum and integrated our findings with those from previous studies performed in crop species belonging to different grass tribes. A single locus, AltSB, was found to control Al tolerance in two highly Al tolerant sorghum cultivars. Significant macrosynteny between sorghum and the Triticeae was observed for molecular markers closely linked to putatively orthologous Al tolerance loci present in the group 4 chromosomes of wheat, barley, and rye. However, AltSB was not located within the homeologous region of sorghum but rather mapped near the end of sorghum chromosome 3. Thus, AltSB not only is the first major Al tolerance gene mapped in a grass species that does not belong to the Triticeae, but also appears to be different from the major Al tolerance locus in the Triticeae. Intertribe map comparisons suggest that a major Al tolerance QTL on rice chromosome 1 is likely to be orthologous to AltSB, whereas another rice QTL on chromosome 3 is likely to correspond to the Triticeae group 4 Al tolerance locus. Therefore, this study demonstrates a clear evolutionary link between genes and QTL encoding the same trait in distantly related species within a single plant family
650 $aaluminum
650 $aSorghum bicolor
700 1 $aGARVIN, D. F.
700 1 $aWANG, Y. H.
700 1 $aSORRELLS, M. E.
700 1 $aKLEIN, P. E.
700 1 $aSCHAFFERT, R. E.
700 1 $aLI, L.
700 1 $aKOCHIAN, L. V.
773 $tGenetics, Maryland$gv. 167, n. 4, p. 1905-1914, 2004.
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Embrapa Milho e Sorgo (CNPMS) |
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