Artículo

Estamos trabajando para incorporar este artículo al repositorio
Consulte el artículo en la página del editor
Consulte la política de Acceso Abierto del editor

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:

  • Bahadur, B., Chaturvedi, A., Rama Swary, N., S.E.M. studies of pollen in relation to enantiostyly and heteranthery in Cassia (Caesalpinaceae) (1990) Current Perspectives in Palyn.l Research Vol. of the Journal of Palynology, 1990-1991, pp. 7-22
  • Buchmann, S.L., Buzz pollination of Cassia quiedondilla (Leguminosae) by bees of the genera Centris and Melopoma (1974) Bull. South Cal. Acad. Sci., 73, pp. 171-173
  • Hurley, J.P., A biophysical model for buzz pollination in angiosperms (1978) J. Theor. Biol., 72, pp. 639-657
  • Cruden, R.W., Pollen ovule-ratios: A conservative indicator of breeding systems in flowering plants (1977) Evolution, 31, pp. 22-46
  • Dulberger, R., The floral biology of Cassia didymobotrya and C (1981) Auriculata. Am. J. Bot., 68 (10), pp. 1350-1360
  • Erdtman, G., Pollen morphology and plant taxonomy (1952) Angiosperms. (An Introduction to Palynology)., 1, pp. I-XII. , 1-539. Almquist & Wicksell, Stockholm
  • Faegri, K., Van Der Pijl., L., (1971) The Principles of Pollination Biology, , 2° Ed Pergamon Press Oxford
  • Genise, J., Palacios, R., Observaciones sobre la biología floral de Prosopis II Fases florales y visitantes en el Distrito Chaqueño Serrano (1990) Darwiniana, 30, pp. 71-85
  • Greissl, R., Vitality analysis of monadic and polyadic pollen grains using optical contrast-fluorescence microscopy (1989) Sc. and Tech. Information, 15 (5), pp. 180-184
  • Irwin, H.S., Barneby, R., The American Cassiinae A synoptical revision of Leguminosae tribe Cassieae subtribe Cassiinae in the New World (1982) Memoirs of the New York Botanical Garden, 35, pp. 455-918
  • Kelly, K.L., ISCC-NBS color-name charts illustrated with centroid colors (1965) Suppl. to Nat. Bur. Standards Circ. 553, , U. S. Government Printing Office, Washington
  • Osborn, M.M., Kenan, P.A., Lane, M.A., Pollination biology of Opuntia polyacantha (Cactaceae) in S (1988) Colorado. Pl. Syst. Evol., 159, pp. 85-94
  • Thorp, R.W., Estes, J.R., Intrafloral behavior of bees on flowers of Cassia fasciculata (1975) J. Kans. Entom. Soc., 48, pp. 175-184

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