Artículo
Abstract:
The morphology, phases, rewards, attractants, visitors, pollen and P/O ratio of four buzz-pollinated species of the tribe Cassieae were analysed in order to establish their floral biology and to test the presence of morphological androecium's differentiation. We wanted to know if the morphological differences, when observed, reflected functional differences between the groups of stamens. Results allowed us to establish that both genera share a group of characteristics that place them in the buzz-pollination syndrome. The pollinators are bumblebees able to vibrate the stamens leading to nothotribic or sternotribic deposition of pollen. The morphological androecium's differences are more evident in Senna than in Chamaecrista, as well as the reflected functional differences: the medium stamens play a nutritional role while the longest play a reproductive one. The P/O ratio was extremely high for all the species treated and pollen production was also high. It may be related to the visitor's behaviour and would act as a reproductive strategy to assure an effective pollen deposition.
Registro:
| Documento: | Artículo |
| Título: | Morphological aspects of four buzz-pollinated species of the tribe cassieae (Caesalpiniaceae) |
| Autor: | Laporta, C.; Palacios, R.A. |
| Filiación: | University of Buenos Aires, Faculty of Exact and Natural Sciences, Departement of Biology and Biodiversity, Pab. II, piso 4, Buenos Aires, (1428), Argentina |
| Palabras clave: | Buzz-pollination; Caesalpiniaceae; Chamaecrista; Floral biology; Senna; Caesalpinioideae; Cassieae; Chamaecrista; Senna |
| Año: | 2001 |
| Volumen: | 561 |
| Página de inicio: | 179 |
| Página de fin: | 183 |
| DOI: | http://dx.doi.org/10.17660/ActaHortic.2001.561.26 |
| Título revista: | Acta Horticulturae |
| Título revista abreviado: | Acta Hortic. |
| ISSN: | 05677572 |
| Registro: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_05677572_v561_n_p179_Laporta |
Referencias:
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Citas:
---------- APA ----------
Laporta, C. & Palacios, R.A. (2001) . Morphological aspects of four buzz-pollinated species of the tribe cassieae (Caesalpiniaceae). Acta Horticulturae, 561, 179-183.http://dx.doi.org/10.17660/ActaHortic.2001.561.26
---------- CHICAGO ----------
Laporta, C., Palacios, R.A. "Morphological aspects of four buzz-pollinated species of the tribe cassieae (Caesalpiniaceae)" . Acta Horticulturae 561 (2001) : 179-183.http://dx.doi.org/10.17660/ActaHortic.2001.561.26
---------- MLA ----------
Laporta, C., Palacios, R.A. "Morphological aspects of four buzz-pollinated species of the tribe cassieae (Caesalpiniaceae)" . Acta Horticulturae, vol. 561, 2001, pp. 179-183.http://dx.doi.org/10.17660/ActaHortic.2001.561.26
---------- VANCOUVER ----------
Laporta, C., Palacios, R.A. Morphological aspects of four buzz-pollinated species of the tribe cassieae (Caesalpiniaceae). Acta Hortic. 2001;561:179-183.http://dx.doi.org/10.17660/ActaHortic.2001.561.26
