Data/hora: 09/06/2024 02:00:54

Provedor de dados: | 88
País: | Brazil
Título: | Biosystematics of the genus Dahlstedtia Malme (Leguminosae, Papilionoideae, Millettieae)
Autores: | Teixeira,Simone P.; Ranga,Neusa T.
Data: | 2004-03-01
Ano: | 2004
Palavras-chave: | Allopatry; Dahlstedtia pentaphylla; Dahlstedtia pinnata; Gene flow; Geographical distribution.
Resumo: | Dahlstedtia has been considered a monotypic genus by some authors, but comprising two species according to others. The latter view was supported by our biosystematic study. The two species are Neotropical, mainly occurring in the Brazilian Atlantic Forest, where they are, however, allopatric. Experimental pollinations show that the two species are intersterile. After interspecificcrossings, few pollen tubes reach the ovule, a dense secretion fills the micropyle and no proembryos are formed. Probably, there is no gene flow between species, but if it should occur, no hybrids would be formed. The present work confirms Burkart's taxonomic view, according to which Dahlstedtia comprises at least two species: D. pinnata and D. pentaphylla.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84042004000100005
Editor: | Sociedade Botânica de São Paulo
Relação: | 10.1590/S0100-84042004000100005
Formato: | text/html
Fonte: | Brazilian Journal of Botany  v.27 n.1 2004
Fonte: | info:eu-repo/semantics/openAccess