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Gayana. Botánica

versión On-line ISSN 0717-6643

Resumen

LETELIER, Luis  y  PENAILILLO, Patricio. Gametophyte and young sporophyte development of Pteris chilensis Desv. (Pteridaceae-Pteridophyta). Gayana Bot. [online]. 2007, vol.64, n.1, pp. 93-97. ISSN 0717-6643.  http://dx.doi.org/10.4067/S0717-66432007000100009.

The ex situ culture by spores of Pteris chilensis Desv. is presented. The germination of spores occurred after 10-12 days, having the pattern of germination as Vittaria type. A filamentous gametophyte of 3-4 cells is formed after 23-24 days; reaching the mature developing between 60-95 days. The cordiform gametophyte shows two symmetrical wings. The archegonia appear before the antheridia. Finally, the first frond is formed after 115 days of sowing. The spores are cultured in agar on Thompson nutritive medium in a culture chamber at a photoperiod of 12 hours light (1,500 lux) and a mean temperature of 25°C

Palabras clave : Ferns; Morphogenesis; Chile; Maule Region.

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