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A preliminary approach to the phylogeny of the genus Paspalum (Poaceae).
Souza-Chies, Tatiana T; Essi, Liliana; Rua, Gabriel H; Valls, José Francisco M; Miz, Rogéria B.
Afiliação
  • Souza-Chies TT; Departamento de Botânica, Universidade Federal do Rio Grande do Sul, Av. Bento Gonçalves, 9500, CEP 91501-970, Brazil. tatiana.chies@ufrgs.br
Genetica ; 126(1-2): 15-32, 2006 Jan.
Article em En | MEDLINE | ID: mdl-16502082
The present work intends to clarify the phylogenetic relationships among the species of Paspalum L. belonging to the informal groups Notata/Linearia and Dilatata, and to raise some preliminary hypotheses on the phylogeny of the genus as a whole. A combined dataset including morphological and molecular characters was used to analyze 28 species of Paspalum plus some representatives of related genera of the tribe Paniceae. Analyses were performed using both parsimony and maximum likelihood. The monophyly of Paspalum is not supported nor contradicted. The circumscription of informal groups of Paspalum is discussed, as well as the cladistic treatment of allopolyploid taxa, especially those comprising the Dilatata group. The relationships of members of the Dilatata with their putative progenitors is confirmed, but the monophyly of the group as a whole is not. A close relationship between P. dilatatum Poir. and P. lividum Trin. ex Schltdl. is shown. Our analysis is consistent with the monophyly of a group comprising Notata+Linearia, with a monophyletic Notata group nested within it. The delimitation of the core Notata is proposed by including P. conduplicatum Canto-Dorow, Valls and Longhi-Wagner, P. notatum Flüggé, P. minus E. Fourn., P. pumilum Nees and P. subciliatum Chase.
Assuntos
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Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Filogenia / Paspalum Idioma: En Revista: Genetica Ano de publicação: 2006 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda
Buscar no Google
Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Filogenia / Paspalum Idioma: En Revista: Genetica Ano de publicação: 2006 Tipo de documento: Article País de afiliação: Brasil País de publicação: Holanda