Aspectos taxonomicos, geneticos e reprodutivos de Pterodon pubescens (Benth.) Benth. e P. emarginatus Vog. (Leguminosae, Dipteryxeae) / Taxonomic, genetic and reproductive aspects of Pterodon pubescens (Benth.) Benth. e P. emarginatus Vog. (Leguminosae, Dipteryxeae)
AUTOR(ES)
Dulce Maria Sucena da Rocha
DATA DE PUBLICAÇÃO
2006
RESUMO
RAPD markers and morphological characters were employed in order to study the variation observed in Pterodon emarginatus sensu Lewis (Fabaceae, Papilionoideae, Dipteryxeae). The objective was to verify if the dimorphism observed in this taxon could be interpreted as variation within a species or if it indicates that P. emarginatus sensu Lewis contains more than one taxonomical entity and in this case, what is the relationship of them and how would be the best way to denominate them. In a publication about the legume species of Bahia (Brazil), Lewis has considered both P. pubescens (Benth.) Benth. and P. polygalaeflorus (Benth.) Benth. as synonyms of P. emarginatus Vog.. Since then, these two species have been treated as synonyms of P. emarginatus in many botanical databanks. However, P.emarginatus as proposed by Lewis, is a dimorphic species presenting individuals with pink flowers, pubescent leaves, and retuse folioles apex as well as plants with purple (violet) flowers, glabrous leaves and strong emarginate folioles apex. There is no mixed population of the two morphs (pink and violet) of P.emarginatus sensu Lewis in the field. The results of the AMOVA for RAPD markers showed that 74% of the observed variance was due to the difference between morphs pink and violet. The canonical discriminant analysis for morphological data agrees with molecular data showing a good separation of the two morphs (r= 0,963 p<0,0001). Those analyses together with the phototypes for the three taxa under study indicate that P.polygalaeflorus is a synonym of P.emarginatus and P.pubescens should be maintained as a separate species
ASSUNTO(S)
genetica vegetal taxonomia vegetal plant genetics plants biological diversity conservation diversidade biologica - conservação
ACESSO AO ARTIGO
http://libdigi.unicamp.br/document/?code=vtls000416877Documentos Relacionados
- Atividade antinociceptiva e antitumoral de compostos isolados da Pterodon pubescens Benth. (Leguminosae- papilionoidea)
- Atividade antiinflamatoria do oleo de sucupira : Pterodon pubescens Benth. Leguminosae-Papilionoideae
- Ocorrência e estrutura de nectários extraflorais em Pterodon pubescens Benth. e em Pterodon polygalaeflorus Benth.
- Ocurrence and structure of extrafloral nectaries in Pterodon pubescens Benth. and Pterodon polygalaeflorus Benth.
- Atividade antinociceptiva do oleo das sementes de Pterodon pubescens Benth. (Leguminosaes-Papilionoidea)