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Abstract:

The composition of the floral nectar sugars and amino acids of four species of Passiflora (P. foetida, P. caerulea, P. suberosa, and P. misera) included in different infrageneric taxa and with distinct pollination mechanisms has been studied. The effect of weather and floral age on nectar volume, existence, and total and relative amounts of the various compounds was explored. The proportion of sugars was rather constant within a given species whereas the composition, number, and total quantity of amino acids showed great intraspecific and intra-plant variability; these nectar properties were independent of floral stage or meteorological conditions. Species belonging to the same subgenus displayed equivalent sugar ratios and similar total amount of amino acids, so these characteristics might be conservative in the genus. For all species, the amino acid concentration surpassed known values for their respective pollination syndromes, viz. bee and wasp-pollinated flowers. No relationship emerged between pollinators with different glossa length and nectars with distinct sugar ratios. Rather, nectar chemical composition seems to reflect taxonomic relationships. © Springer-Verlag 2009.

Registro:

Documento: Artículo
Título:Composition of the floral nectar of different subgenera of Argentinian Passiflora species
Autor:García, M.T.A.; Gottsberger, G.
Filiación:DBBE, FCEyN, Universidad de Buenos Aires, Buenos Aires, Argentina
Botanical Garden and Herbarium, University of Ulm, 89081 Ulm, Germany
Lab. 79, 4 p., Pab. II, C1428EHA Ciudad Universitaria, C.A.B.A, Buenos Aires, Argentina
Palabras clave:Amino acids; Chemotaxonomical affinities; Floral nectar constituents; Passiflora; Pollination mechanisms; Sugars; Apoidea; Passiflora; Passiflora caerulea; Passiflora edulis; Passiflora foetida; Passiflora misera; Passiflora suberosa
Año:2009
Volumen:283
Número:3
Página de inicio:133
Página de fin:147
DOI: http://dx.doi.org/10.1007/s00606-009-0215-3
Título revista:Plant Systematics and Evolution
Título revista abreviado:Plant Syst. Evol.
ISSN:03782697
CODEN:ESPFB
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03782697_v283_n3_p133_Garcia

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Citas:

---------- APA ----------
García, M.T.A. & Gottsberger, G. (2009) . Composition of the floral nectar of different subgenera of Argentinian Passiflora species. Plant Systematics and Evolution, 283(3), 133-147.
http://dx.doi.org/10.1007/s00606-009-0215-3
---------- CHICAGO ----------
García, M.T.A., Gottsberger, G. "Composition of the floral nectar of different subgenera of Argentinian Passiflora species" . Plant Systematics and Evolution 283, no. 3 (2009) : 133-147.
http://dx.doi.org/10.1007/s00606-009-0215-3
---------- MLA ----------
García, M.T.A., Gottsberger, G. "Composition of the floral nectar of different subgenera of Argentinian Passiflora species" . Plant Systematics and Evolution, vol. 283, no. 3, 2009, pp. 133-147.
http://dx.doi.org/10.1007/s00606-009-0215-3
---------- VANCOUVER ----------
García, M.T.A., Gottsberger, G. Composition of the floral nectar of different subgenera of Argentinian Passiflora species. Plant Syst. Evol. 2009;283(3):133-147.
http://dx.doi.org/10.1007/s00606-009-0215-3