INVESTIGADORES
SERSIC Alicia Noemi
artículos
Título:
Floral biology of Aristolochia argentina (Aristolochiaceae).
Autor/es:
TRUJILLO, C.; SÉRSIC, A.N.
Revista:
FLORA
Editorial:
ELSEVIER GMBH
Referencias:
Año: 2006 vol. 201 p. 374 - 382
ISSN:
0367-2530
Resumen:
AbstractThe floral biology of Aristolochia argentina (Aristolochiaceae) was studied in natural populations in Cordoba,Argentina. This native vine has flowers that attract mainly scuttle fly pollinators of the genus Megaselia (Phoridae).The trap-like perianth is formed by a limb, a tube, and a basal utricle. The limb produces an odor that recalls decayingplant tissues, which apparently mimics the natural oviposition substrate of the flies. The insects stay entrapped insidethe utricle for approximately 24 h, making contact with the sexual organs of the flower. When released, they canbecome captured again in other flowers. The mechanisms of herkogamy and protogyny are efficient. Although self-compatibility exists, as demonstrated by the high percentage of fruits produced by geitonogamy, fruits were notproduced under natural or artificial autogamous conditions. Natural pollination showed significantly lower fruit setthan xenogamous and geitonogamous crosses.r 2006 Elsevier GmbH. All rights reserved.
