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Pollinator Specificity and Convergence in Fly-pollinated Pleurothallis(Orchidaceae) Species: A Multiple Population Approach
TLDR
Despite similarities in floral morphology and odour, genetic data show that these species pairs are not each other's closest relatives, and it is hypothesize that these similarities are due to convergence in allopatric species that evolved similar pollination mechanisms.
Self-incompatibility, Inbreeding Depression and Crossing Potential in Five BrazilianPleurothallis (Orchidaceae) Species
TLDR
Self-incompatibility and inbreeding depression are apparently important in the maintenance of the unusually high levels of genetic variability found in these Pleurothallis species.
Fly-pollinated Pleurothallis (Orchidaceae) species have high genetic variability: evidence from isozyme markers.
TLDR
It is suggested that self-incompatibility, inbreeding depression, and mechanical barriers that prevent self-pollination in these species are responsible for the maintainance of the high genetic variability.
Genetic and morphological variability in Cattleya elongata Barb. Rodr. (Orchidaceae), endemic to the campo rupestre vegetation in northeastern Brazil
TLDR
The differences observed between the two genetic markers and the various morphological markers examined here indicated that the isolated use of any single parameter of these different populations for conservation planning or management would not consider all of the variability to be found in the species, as found in other Brazilian campos rupestres plants.
Lip anatomy and its implications for the pollination mechanisms of Bulbophyllum species (Orchidaceae).
TLDR
These findings corroborate the hypothesis that, because pollination in these species is dependent on an unpredictable external factor (wind), nectar is necessary to keep the insect in the flower for a long period.
Post-zygotic reproductive isolation between sympatric taxa in the Chamaecrista desvauxii complex (Leguminosae-Caesalpinioideae).
TLDR
The two varieties examined demonstrate marked differences in their morphology, floral biology, phenology and genetic make-up, all of which indicate that they should be treated as two distinct species.
Morphological and histological characterization of the osmophores and nectaries of four species of Acianthera (Orchidaceae: Pleurothallidinae)
TLDR
The presence of osmophores on the sepals reinforces that this localization is common among the Pleurothallidinae, whilst they occur in a different region (labelum) in the other major fly-pollinated orchid group (Bulbophyllum).
Reproductive biology of Pseudolaelia corcovadensis Porto & Brade (Orchidaceae): melittophyly and self-compatibility in a basal Laeliinae
TLDR
O posicionamento filogenetico do genero Pseudolaelia permite indicar that melitofilia e autocompatibilidade sejam caracteristicas basais na subtribo Laeliinae, com posterior radiacao adaptativa para polinizacao por beija-flores, Lepidoptera, Diptera e outros Hymenoptera.
Geographical genetic structuring and phenotypic variation in the Vellozia hirsuta (Velloziaceae) ochlospecies complex.
TLDR
It is recommended that Vellozia hirsuta is considered a single enormously variable species and is treated as an ochlospecies, a species having widely polymorphic and weakly polytypic complex variation, with morphological characteristics varying independently.
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