IADO 05364
INSTITUTO ARGENTINO DE OCEANOGRAFIA
Unidad Ejecutora - UE
artículos
Título:
LIFE CYCLE OF PUNCTARIA LATIFOLIA (PUNCTARIACEAE, PHAEOPHYCEAE) FROM BUENOS AIRES, SOUTH AMERICA
Autor/es:
M. CECILIA GAUNA; NATALIA. V. PIZANI; ELISA R. PARODI
Revista:
IHERINGIA. SERIE BOTANICA
Editorial:
undaco Zoobotanica do Rio Grande do Sul Jardim Botanico. Muesu de Ciencias Naturais
Referencias:
Lugar: Porto Alegre; Año: 2007
ISSN:
0073-4705
Resumen:
The life cycle of Punctaria latifolia was studied under culture conditions. The material was collected in the intertidal zone of Villa del Mar and Bay San Blas (Buenos Aires) Argentina, South America, during of August and December of 2003. It was found adhered to the rocky substrate and on Spartina alterniflora plants. This species presented a haplodiplobiontic heteromorphic life cycle. Sporophytes presented both plurilocular and unilocular sporangia. The asexual reproduction was evidenced by the germination of unispores that originated microscopic gametophytes. Zygotes reconstituted the diploid phase. Chromosome counts gave 16 and 8 for diplo- and haplo- phases, respectively.
