A preliminary approach to the phylogeny of the genus Paspalum (Poaceae)

Genetica
Tatiana T Souza-ChiesRogéria B Miz

Abstract

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.,...Continue Reading

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Citations

Apr 29, 2008·Molecular Phylogenetics and Evolution·Liliana EssiTatiana Teixeira de Souza-Chies
Sep 27, 2013·Anais Da Academia Brasileira De Ciências·Mayra T Eichemberg, Vera L Scatena
May 31, 2011·American Journal of Botany·Christian A ZanottiOsvaldo Morrone
Jul 19, 2013·Annals of Botany·Juan Pablo A OrtizFulvio Pupilli

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