Germination of spores and gametophytes of Polystichum montevidense (Spreng.) Rosenst. (Dryopteridaceae)


Abstract:

A description is made of characteristics of the germination of spores, gametophytic development and adult gametophyte structure of Polystichum montevidense (Spreng.) Rosenst. obtained by sterile culture. It was found that sporangia produce 32 monolete spores with crested perispore. The germination of Vittaria-type spores occurs three days after sowing. Gametophyte development is of the Aspidium type. The laminar gametophytes have only one type of glandular trichomes, with secretion of trichomes has a lipid nature, distributed on the edge of the lamina and a few on the surface. It is reported for the first time that adult gametophyte cells have oil droplets. Sexual expression is manifested in gametophytes of more than 100 days old, with only female gametophytes. All this is illustrated with pictures recorded with light microscopes and a scanning electron microscope.

Año de publicación:

2013

Keywords:

  • Archegonia
  • spores
  • Trichomes
  • lipids
  • Dryopteridaceae

Fuente:

scopusscopus

Tipo de documento:

Article

Estado:

Acceso restringido

Áreas de conocimiento:

  • Botánica
  • Planta

Áreas temáticas de Dewey:

  • Plantas
  • Plantas conocidas por sus características y flores
  • Temas específicos de la historia natural de las plantas
Procesado con IAProcesado con IA

Objetivos de Desarrollo Sostenible:

  • ODS 15: Vida de ecosistemas terrestres
  • ODS 14: Vida submarina
  • ODS 2: Hambre cero
Procesado con IAProcesado con IA