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| Silva,Marcelo Aparecido de Souza; Varassin,Isabela Galarda. |
| ABSTRACT Plant size and clonality are important traits for explaining the reproductive effort of clonal plants. Larger plants can invest more resources into reproduction, and clonality is known to increase reproductive effort. Moreover, reproductive effort is influenced by environmental variation, and so the spatial distribution of plants may affect plant reproductive effort. We investigated the effect of plant size, clonality and spatial distribution on the reproductive effort of Vriesea carinata in the Atlantic Forest in the state of Paraná, Brazil. We marked twenty individual plants and measured their rosette size, biomass and number, as well as rosette reproductive effort (number of flowers, fruits and seeds). We also evaluated the relationship between... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Clonal growth; Morphological variation; Reproductive effort; RNSM; Vriesea. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-33062016000300401 |
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| Silva,Karina Gonçalves da; Ferreira,Mauricio Lamano; Silva,Emerson Alves da; Kanashiro,Shoey; Camargo,Plínio Barbosa de; Tavares,Armando Reis. |
| Abstract: The objective of this work was to evaluate if nitrogen use efficiency (NUE) indexes can elucidate functional differences in nutrient uptake between the root system and tank of epiphytic bromeliads. The bromeliads Guzmania lingulata and Vriesea 'Harmony' received fertilizers in their tanks or through their roots using modified Hoagland & Arnon solution, with 0.00, 2.62, or 5.34 mmol L-1 nitrogen, as urea. After 90 days, nitrogen contents in leaves and plant biomass were evaluated, and NUE indexes were calculated. Guzmania lingulata and V. 'Harmony' fertilized in their tanks with 5.34 mmol L-1 had the highest averages of nitrogen uptake efficiency and recovery efficiency; those fertilized with 2.62 mmol L-1 through their roots showed the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Guzmania lingulata; Vriesea; Bromeliaceae; Nutritional efficiency index; Plant nutrition; Root functionality. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000600703 |
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| SOUZA,EVERTON H.; SOUZA,FERNANDA V.D.; ROSSI,MÔNICA L.; PACKER,RENAN M.; CRUZ-BARROS,MARIA AMELIA V.; MARTINELLI,ADRIANA P.. |
| ABSTRACT Pollen morphology characterization is important in taxonomy, conservation and plant breeding, and pollen viability studies can support breeding programs. This study investigated pollen morphology and male fertility in 18 species of Bromeliaceae with ornamental potential. For morphological characterization, pollen grains were acetolyzed and characterization of exine was done using scanning and transmission electron microscopy. Pollen viability was investigated by in vitro germination and histochemical tests. Species belonging to Aechmea and Ananas genera presented medium size pollen, except for Ae. fasciata, with large pollen. Al. nahoumii, P. sagenarius and the Vriesea species analyzed showed large pollen, except for V. carinata, with very large... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Aechmea; Alcantarea; Ananas; In vitro pollen germination; Histochemical test; Vriesea. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652017000603067 |
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