Angiosperm
Mostrando 13-24 de 166 artigos, teses e dissertações.
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13. Atmospheric pollen and spore content in the urban area of the city of Medellin, Colombia
The atmosphere of the urban area of the city of Medellin, Colombia was monitored with the objective of identifying airborne pollen and spores throughout a whole year. Sampling was performed between February 2010 and March 2011, coinciding with the La Niña climate phenomenon, which is characterized by a considerable increase in precipitation. Samples of airb
Hoehnea. Publicado em: 2015-03
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14. Angiosperm Checklist of Espírito Santo: using electronic tools to improve the knowledge of an Atlantic Forest biodiversity hotspot
Resumo Uma listagem de angiospermas do estado do Espírito Santo é apresentada, incluindo um total de 6.204 espécies nativas, representando um aumento de 16% na riqueza de espécies registrada para o Estado. O Espírito Santo abriga 32% das espécies nativas da Floresta Atlântica e apresenta 516 espécies endêmicas (8.3% do total registrado para o Estado
Rodriguésia. Publicado em: 2015
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15. New information on molecular features of the dengue virus type 3, panorama of the amphibian research in Brazil, and a new extinct Cretaceous angiosperm
An. Acad. Bras. Ciênc.. Publicado em: 2014-12
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16. A new angiosperm from the Crato Formation (Araripe Basin, Brazil) and comments on the Early Cretaceous Monocotyledons
A paleoflora da Formação Crato é uma das poucas floras equatoriais do Cretáceo Inferior. É diversificada, com muitas angiospermas, especialmente representantes dos clados magnoliids, monocotiledôneas e eudico-tiledôneas, confirmando a hipótese de que a diversidade das angiospermas durante a última parte do Cretáceo Inferior era ralativamente alta.
An. Acad. Bras. Ciênc.. Publicado em: 2014-12
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17. Angiosperm flora used by meliponine guilds (Apidae, Meliponina) occurring at rainforest edges in the state of Ceará, Brazil
Informações sobre o uso dos recursos florísticos de bordas imediatas de fragmentos de floresta atlântica pelas abelhas sem ferrão não estão facilmente disponíveis na literatura científica. Considerando a importância dessas espécies vegetais para as guildas de meliponíneos locais, este estudo objetivou identificar e caracterizar a flora das bordas
An. Acad. Bras. Ciênc.. Publicado em: 04/07/2014
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18. Pollen grains in quaternary sediments from the Campos Basin, state of Rio de Janeiro, Brazil: Core BU-91-GL-05
Here, we describe pollen grains extracted from a Pleistocene-Holocene sediment core (BU-91-GL-05; 22°48'45"S; 41°54'13"W) taken from the Albacora Slope (22°48'45"S; 41°54'13"W), located in the Campos Basin of the northern region of the state of Rio de Janeiro, Brazil. The analysis resulted in the identification and morphological description of 46 types o
Acta Bot. Bras.. Publicado em: 2013-12
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19. Effects of gut passage on the germination of seeds ingested by didelphid marsupials in a neotropical savanna
We analyzed the effects that passage through the guts of seven didelphid species had on the seed germination of 10 plant species. This study was conducted in an area of riparian woodland in a cerrado (savanna) reserve in southeastern Brazil. We found seeds of 23 angiosperm species in 427 fecal samples obtained from seven didelphid species. The plant families
Acta Bot. Bras.. Publicado em: 2013-09
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20. Floristic composition and community structure of epiphytic angiosperms in a terra firme forest in central Amazonia
This survey aimed to describe the floristic composition and structure of the epiphytic community occurring in a terra firme forest in the city of Coari, Brazil, in the Amazon region. Data collection was performed with a 1.5 ha plot method, with which upland, slope and lowland habitats were sampled. All angiosperm epiphytes and their host plants (diameter at
Acta Bot. Bras.. Publicado em: 2013-06
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21. Floristic and phytosociological analysis of palm swamps in the central part of the Brazilian savanna
We analyzed the floristics and phytosociology of three palm swamps in the municipality of Bela Vista de Goiás, located in the state of Goiás, Brazil, in the central part of the Brazilian savanna (Cerrado). The floristic surveys were conducted monthly from May 2008 to April 2009, and 310 species were recorded (seven bryophytes, 15 ferns and 288 angiosperms)
Acta Bot. Bras.. Publicado em: 2013-03
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22. Diversidade em Psidium guajava L. por caracteres morfológicos, moleculares e citogenéticos / Diversity in Psidium guajava L. by morphological, molecular and cytogenetics
Guava (Psidium guajava L.) is one of the most economically important fruit crop from Myrtaceae family. Brazil is one of the largest producers of guava in the world, which is a potential crop in growth and profitability. Cross-pollination of the species and the existence of heterogeneous seminal propagation orchards result in variability, allowing the selecti
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 12/07/2012
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23. Estudos anatômicos e taxonômicos da subtribo Sipolisiinae H.Rob. (Asteraceae Martinov)
The Asteraceae (Compositae) is the largest angiosperm family with 43 tribes, 1.600-2.000 genera and 24.000-30.000 species, distributed around the globe except for Antarctica. The tribe Vernonieae has undergone changes in its classification, since the largest genera of the tribe, Vernonia Schreb, was segregated in several others, and several subtribes were cr
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 28/02/2012
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24. Cloning and expression of embryogenesis-regulating genes in Araucaria angustifolia (Bert.) O. Kuntze (Brazilian Pine)
Angiosperm and gymnosperm plants evolved from a common ancestor about 300 million years ago. Apart from morphological and structural differences in embryogenesis and seed origin, a set of embryogenesis-regulating genes and the molecular mechanisms involved in embryo development seem to have been conserved alike in both taxa. Few studies have covered molecula
Genetics and Molecular Biology. Publicado em: 20/01/2012