Poricidal Anthers
Mostrando 1-5 de 5 artigos, teses e dissertações.
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1. Trade off between quantity and size of pollen grains in the heterandrous flowers of Senna pendula (Fabaceae)
ABSTRACT Heteranthery, the presence of different types of stamens in a flower, may reduce the conflict between pollinators and plants by ensuring the resource for the pollinator without drastically affecting the availability of viable male gametes for fertilization, according to the division-of-labor hypothesis. We investigated whether the poricidal anthers
Acta Bot. Bras.. Publicado em: 30/07/2018
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2. An overview on pollination of the Neotropical Poales
Abstract Current phylogenetic hypotheses support that ancestral Poales were animal-pollinated and that subsequent shifts to wind pollination have occurred. Ten of the 16 Poales families are widely distributed in the Neotropics, however a comprehensive understanding of their pollination systems' diversity is still lacking. Here we surveyed studies on pollinat
Rodriguésia. Publicado em: 2015-06
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3. Diversidade de fontes de pólen utilizadas por abelhas Centridini em áreas de Cerrado / Diversity of pollen sources used by Centridini bees in areas of Cerrado. Dissertation in Ecology and Conservation of Natural Resources
As abelhas nativas são os principais responsáveis pela polinização em áreas naturais e nos sistemas agrícolas. Nesse contexto, informações sobre as fontes de recursos alimentares e os padrões de utilização dessas por abelhas simpátricas podem subsidiar ações de conservação e manejo desse grupo. Nesse trabalho apresentamos informações sobre
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 16/02/2012
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4. Revisão taxonomica e analise cladistica do genero Dichorisandra J.C. Mikan (Commelinaceae) / Taxonomic revision and cladistic analysis of Dichorisandra
The neotropical genus Dichorisandra is the largest within the subtribe Dichorisandrinae, being characterized by its poricidal anthers (sometimes opening by slits but functionally poricidal) and its arillated seeds. The plants are perennial, herbaceous, sometimes with a leaf rosette close to the ground, and live mostly within forests. The last revision of the
Publicado em: 2008
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5. Biologia de reprodução de especies de Kielmeyera (Guttiferae) de cerrados de Brasilia, DF
This study deal with reproductive biology of two sympatric wood species of the genus Kielmeyera (Guttiferae), K. coriacea and K.speciosa. Pollination, dispersal and establishment of seedlings were studied to characterize the reproductive process and its adaptation to Cerrado vegetation conditions. The study was conducted from march, 1984 to January, 1985 in
Publicado em: 1986