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Registro Completo |
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Biblioteca(s): |
Embrapa Pantanal. |
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Data corrente: |
29/04/1999 |
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Data da última atualização: |
29/04/1999 |
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Autoria: |
ECKENWALDER, J. E.; BARRETT, S. C. H. |
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Título: |
Phylogenetic systematics of Pontederiaceae. |
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Ano de publicação: |
1986 |
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Fonte/Imprenta: |
Systematic Botany, v.11, n.3, p.373-391, 1986. |
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Idioma: |
Inglês |
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Conteúdo: |
Six different methods of ciadogram construction were applied to a data set embracing 34 species and subspecies of Pontederiacease. Nineteen Wagner trees were constructed using different combinations of character subsets and outgroups. Although 12 trees constructed using the largest character cliques uncovered by character compatibility analysis, these were highly unresolved. Four additional trees were constructed using plenetic methods. Trees resulting from the various procedures were compared using several optimality criteria. Wagner trees based on all 42 characters or on the subset of 27 reproductive characters were most successful according to these criteria. Branch-swapping trials, based upon common features found in the Wagner and other trees produced another 10 trees is partly a function of homoplasy. Two-thirds of the character state changes on the trees are homoplasious. The primitive breeding system of the Pontederiaceae is not clearly resolved, but heterostyly is probably a synapomorphy of only one lineage of the family. A vicariance explanation of the biogeography of the family based on a Gondwanan distribution, seems less parsimonious than an origin in South America, followed by several eastward dispersals. While Monochoria and Pontederia are apparently monophyletic under different analyses, Eichhornia and Hetetanthera, as presently circumscribed, are probably paraphyletic. |
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Palavras-Chave: |
Botanic. |
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Thesagro: |
Botânica; Pontederiaceae. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01842naa a2200169 a 4500
001 1795480
005 1999-04-29
008 1986 bl --- 0-- u #d
100 1 $aECKENWALDER, J. E.
245 $aPhylogenetic systematics of Pontederiaceae.
260 $c1986
520 $aSix different methods of ciadogram construction were applied to a data set embracing 34 species and subspecies of Pontederiacease. Nineteen Wagner trees were constructed using different combinations of character subsets and outgroups. Although 12 trees constructed using the largest character cliques uncovered by character compatibility analysis, these were highly unresolved. Four additional trees were constructed using plenetic methods. Trees resulting from the various procedures were compared using several optimality criteria. Wagner trees based on all 42 characters or on the subset of 27 reproductive characters were most successful according to these criteria. Branch-swapping trials, based upon common features found in the Wagner and other trees produced another 10 trees is partly a function of homoplasy. Two-thirds of the character state changes on the trees are homoplasious. The primitive breeding system of the Pontederiaceae is not clearly resolved, but heterostyly is probably a synapomorphy of only one lineage of the family. A vicariance explanation of the biogeography of the family based on a Gondwanan distribution, seems less parsimonious than an origin in South America, followed by several eastward dispersals. While Monochoria and Pontederia are apparently monophyletic under different analyses, Eichhornia and Hetetanthera, as presently circumscribed, are probably paraphyletic.
650 $aBotânica
650 $aPontederiaceae
653 $aBotanic
700 1 $aBARRETT, S. C. H.
773 $tSystematic Botany$gv.11, n.3, p.373-391, 1986.
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Registro original: |
Embrapa Pantanal (CPAP) |
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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. |
Registro Completo
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Biblioteca(s): |
Embrapa Recursos Genéticos e Biotecnologia. |
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Data corrente: |
12/03/1998 |
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Data da última atualização: |
10/04/2008 |
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Autoria: |
MENDONCA, R. C. de; FELFILI, J. M.; WALTER, B. M. T.; SILVA JUNIOR, M. C. da; REZENDE, A. V.; FILGUEIRAS, T. S.; NOGUEIRA, P. E. |
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Afiliação: |
EMBRAPA-CENARGEN. |
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Título: |
Flora vascular do cerrado. |
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Ano de publicação: |
1998 |
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Fonte/Imprenta: |
In: SANO, S.M.; ALMEIDA, S.P.de, ed. Cerrado: ambiente e flora. Planaltina: EMBRAPA-CPAC, 1998 |
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Páginas: |
p.289-556 |
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Idioma: |
Português |
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Conteúdo: |
Composicao das listas; Flora vascular; Pteridofitas; Fanerogamas; Plantas invasoras ou ruderais; Riqueza floristica do bioma cerrado. |
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Palavras-Chave: |
Brasil; Brazilian savannas; Fanerogama; Indigenous organisms; Planta invasora; Pteridophyta; Spermatophyta; Vascular. |
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Thesagro: |
Cerrado; Flora; Pteridófita. |
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Thesaurus NAL: |
Brazil; weeds. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 01066naa a2200361 a 4500
001 1179688
005 2008-04-10
008 1998 bl uuuu u00u1 u #d
100 1 $aMENDONCA, R. C. de
245 $aFlora vascular do cerrado.
260 $c1998
300 $ap.289-556
520 $aComposicao das listas; Flora vascular; Pteridofitas; Fanerogamas; Plantas invasoras ou ruderais; Riqueza floristica do bioma cerrado.
650 $aBrazil
650 $aweeds
650 $aCerrado
650 $aFlora
650 $aPteridófita
653 $aBrasil
653 $aBrazilian savannas
653 $aFanerogama
653 $aIndigenous organisms
653 $aPlanta invasora
653 $aPteridophyta
653 $aSpermatophyta
653 $aVascular
700 1 $aFELFILI, J. M.
700 1 $aWALTER, B. M. T.
700 1 $aSILVA JUNIOR, M. C. da
700 1 $aREZENDE, A. V.
700 1 $aFILGUEIRAS, T. S.
700 1 $aNOGUEIRA, P. E.
773 $tIn: SANO, S.M.; ALMEIDA, S.P.de, ed. Cerrado: ambiente e flora. Planaltina: EMBRAPA-CPAC, 1998
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Embrapa Recursos Genéticos e Biotecnologia (CENARGEN) |
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