INVESTIGADORES
FERRUCCI Maria silvia
artículos
Título:
El polen de Paullinieae (Sapindaceae)
Autor/es:
FERRUCCI, M.S.; ANZĂ“TEGUI, L.M.
Revista:
Bonplandia
Editorial:
Imprenta de la UNNE
Referencias:
Lugar: Resistencia; Año: 1993 vol. 6 p. 211 - 243
ISSN:
0524-0476
Resumen:
A detailed study on the morphology of pollen on thirty one species of the tribe Paullinieae, comprising seven genera, has been carried out by LM and SEM. The pollen grains of the following taxa were examined: subtribe Paulliniinae (Cardiospermum L., 4 spp., Houssayanthus Hunz., 2 spp., Lophostigma Radlk., 1 sp., Paullinia L., 3 spp., Serjania Miller, 16 spp., and Urvillea Kunth, 4 spp.); subtribe Thinouiinae (Thinouia Triana & Planchon, 1 sp.). All of them grow in Argentina, except L. plumosum Radlk. and H. monogynus (Schdl.) Ferrucci, collected in Bolivia and Paraguay respectively. Four pollen types have been recognized: type A - isopolar, tricolporate, subspheroidal to oblate-spheroidal grains in Thinouia; type B - isopolar or subisopolar, trisyncolporate, heterocolpate, dicolpodiorate, monocolpate, prolate or prolate-spheroidal grains in Lophostigma; type C - heteropolar, hemitrisyncolporate, peroblate or oblate grains are shared by Serjania, Houssayanthus, Cardiospermum and Urvillea, (in these genera three groups are recognized based on details of structure and sculpture) and type D - isopolar or subisopolar triporate, oblate or peroblate grains in Paullinia. The probable evolutionary trends of pollen morphology characters are discussed. Based on shape and aperture types of the grains, a tentative phylogenetic line of the tribe is presented.