INVESTIGADORES
GONZALEZ Ana Maria
artículos
Título:
Anatomía y Ontogenia de Semillas de Helicteres Lhotzkyana (Sterculiaceae)
Autor/es:
GONZALEZ, ANA MARIA; CARMEN L. CRISTÓBAL
Revista:
Bonplandia
Editorial:
Ed. Instituto de Botánica del Nordeste.
Referencias:
Año: 1997 vol. 9 p. 287 - 294
Resumen:
ANATOMÍA Y ONTOGENIA DE SEMILLAS DE HELICTERES LHOTZKYANA (STERCULIACEAE)
por ANA MARÍA GONZÁLEZ[1] y CARMEN L. CRISTÓBAL2
Summary
The anatomy and ontogeny of the seeds of H. Lhotzkyana was studied, in order to know the structure and origin of its wing. Ripe seeds of H.baruensis, representative of the genus, were also analized so as to compare both kind of seeds.
The exotesta is made of longitudinally elongated sclereids, endotesta is parenchymatic with small patches of tannin cells. The principal mechanical layer of the seed coat is the exotegmen, formed by radially elongated macrosclereids; meso- and endotegmen are tanniniferous.
The present study shows that the wing of the seeds of H. Lhotzkyana develops from the raphe, and consists of parenchymatic cells sourronding the rapheal vascular bundle and both sclerenchymatic epidermis.
[1]Becaria de perfeccionamiento del CONICET, 2 Instituto de Botánica del Nordeste, UNNE-CONICET, CC: 209, Corrientes, Argentina.