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Made available in DSpace on 2018-11-26T16:32:42Z (GMT). No. of bitstreams: 0 Previous issue date: 2016-05-01 Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq) Fundacao de Amparo a Pesquisa do Estado do Rio Grande do Sul (FAPERGS) Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) Australian Tropical Herbarium, James Cook University (ATH - JCU) Programa de Pos-Graduacao em Genetica e Biologia Molecular, Universidade Federal do Rio Grande do Sul (PPGBM - UFRGS) Aechmea subgenus Ortgiesia comprises ca. 20 species distributed in Brazil, Argentina, Paraguay, and Uruguay, with a center of diversity in the Brazilian Atlantic rainforest. We examined interspecific relationships of Ortgiesia based on Amplified Fragment Length Polymorphisms (AFLP). Ninety-six accessions belonging to 14 species of Ortgiesia were sampled, and genotyped with 11 AFLP primer combinations. The neighbor joining (NJ) tree depicted two main genetic groups within Aechmea subgenus Ortgiesia, and four subgroups. The NJ tree showed short internal branches, indicating an overall shallow genetic divergence among Ortgiesia species as expected for the recently radiated subfamily Bromelioideae. Our results suggest that hybridization and/or incomplete lineage sorting may have hampered the reconstruction of interspecific relationships in Aechmea subgenus Ortgiesia. The mapping of petal color (yellow, blue, pink, or white), inflorescence type (simple or compound), and inflorescence shape (ellipsoid, subcylindric, cylindric, or pyramidal) against the NJ tree indicated that these characters are of limited taxonomic use in Aechmea subgenus Ortgiesia due to homoplasy. An analysis of the current distribution of Ortgiesia identified the southern region of the Brazilian Atlantic rainforest, between latitudes of 26 degrees and 27 degrees S, as the center of diversity for the subgenus. (C) 2016 Elsevier Inc. All rights reserved. Univ Fed Rio Grande do Sul, Inst Biociencias, Dept Genet, Ave Bento Goncalves 9500,POB 15053, BR-91501970 Porto Alegre, RS, Brazil James Cook Univ, Australian Trop Herbarium, POB 6811, Cairns, Qld 4878, Australia James Cook Univ, Ctr Trop Biodivers & Climate Change, Discovery Dr, Townsville, Qld 4814, Australia Univ Estadual Paulista, Inst Biociencias, Dept Ecol, Ave 24A 1515, BR-13506900 Rio Claro, SP, Brazil Univ Estadual Paulista, Inst Biociencias, Dept Ecol, Ave 24A 1515, BR-13506900 Rio Claro, SP, Brazil CNPq: 479413/2011-8 Fundacao de Amparo a Pesquisa do Estado do Rio Grande do Sul (FAPERGS): Pronex 10/0198-0 Fundacao de Amparo a Pesquisa do Estado do Rio Grande do Sul (FAPERGS): PqG 06/2010 - 1015348 FAPESP: 2009/52725-3 CNPq: 142124/2010-9 CNPq: 237012/2012-0