Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: 

RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 3
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
Anatomía de raíz de la tribu Cranichideae (Orchidaceae), con énfasis en la importancia filogenética del velamen 32
Figueroa Batalla, Coyolxauhqui.
El velamen es una rizodermis especializada formada por células muertas con engrosamientos en la pared secundaria; se encuentra en muchas orquídeas y otras monocotiledóneas. Se considera que esta estructura podría tener valor taxonómico, aunque no se han realizado estudios al respecto en la tribu Cranichideae. En este trabajo se examinó la estructura anatómica de la raíz de 26 especies/19 géneros de cinco linajes (subtribus) de la tribu Cranichideae mediante microscopía de luz y microscopía electrónica de barrido. Se evaluó la importancia taxonómica y filogenética del velamen en el marco de una filogenia generada a partir de secuencias de ADN nuclear y de cloroplasto así como caracteres morfológicos/anatómicos de raíz. Se registró por primera vez...
Tipo: Tesis Palavras-chave: Anatomía de raíz; Cranichideae; Filogenia; NrITS; Orchidaceae; Plastidio trnK-matK; Secuencias de ADN; Tilosomas; Velamen; Maestría; Botánica; DNA sequences; Orchidaceae; Phylogeny; Plastid trnK-matK; Root anatomy; Tilosomes.
Ano: 2007 URL: http://hdl.handle.net/10521/1467
Imagem não selecionada

Imprime registro no formato completo
ITS2 variability of Biomphalaria (Mollusca, Planorbidae) species from the Paranapanema Valley (São Paulo State, Brazil): diversity patterns, population structure, and phylogenetic relationships 74
Tuan,Roseli; Santos,Priscila dos.
The ribosomal DNA internal transcribed spacer 2 (ITS2) has been shown to be a useful genetic marker for species identification and phylogenetic reconstruction in the genus of freshwater snails Biomphalaria (Preston 1910). Additionally, ITS2 studies in Biomphalaria have uncovered significant intra-specific genetic variability suggesting the presence of cryptic species complexes. We obtained ITS2 sequences for the Biomphalaria species B. glabrata, B. tenagophila, B. occidentalis and B. peregrina from the Paranapanema Valley (São Paulo State, Brazil) and compared them with a comprehensive set of published Biomphalaria ITS2 sequences using Bayesian inference of phylogeny. Analysis of the resulting trees showed that the newly obtained B. glabrata sequences did...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Bayesian inference; Biomphalaria; DNA sequences; Internal transcribed spacer 2 (ITS2); Ribosomal DNA.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572007000100024
Imagem não selecionada

Imprime registro no formato completo
Systematic revision of the living species of Bullidae (Mollusca : Gastropoda : Cephalaspidea), with a molecular phylogenetic analysis 5
Malaquias, Manuel Antonio E.; Reid, David G..
Bullidae are a worldwide family of marine shelled cephalaspidean gastropods with a mainly tropical distribution, but also with some representatives in temperate waters. The taxonomy of the group has in the past been based only on shell characters, and the few anatomical accounts available have not addressed more than one to three species, so there has been no agreement about the number of valid species. Seventy-two specific names and 16 varietal names have been proposed worldwide. The systematics of the family Bullidae are revised, based not only on shells but also on anatomy of all extant species and on DNA sequence data. Twelve species are recognized worldwide, including one new species here described, and all are assigned to the genus Bulla. Two species...
Tipo: Text Palavras-chave: Bayesian analysis; Bulla; DNA sequences; Morphological stasis; Taxonomy.
Ano: 2008 URL: https://archimer.ifremer.fr/doc/00466/57805/60094.pdf
Registros recuperados: 3
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional