[Gametophyte morphogenesis of Mexican species of Pleopeltis (Polypodiaceae, subfamily Pleopeltoideae)].
The development and morphology of the gametophytes of seven species of ferns from genus Pleopeltis are described and compared. The spore germination is Vittaria-type in P. astrolepis, P. crassinervata, P. macrocarpa, P. polylepis and P. revoluta. For P. angusta and P. mexicana it was proposed a new germination pattern is Pleopeltis-type. The prothallial development is Drynaria-type in P. astrolepis, P. crassinervata, P. macrocarpa, P. polylepis and P. revoluta and Ceratopteris-type for P. angusta and P. mexicana. The gametangia are typical of the leptosporangiate ferns, sporophytes after six and a half months in culture did not appeared.
Reyes Jaramillo
Irma
I
Departamento de Biología, Area de Botánica Estructural y Sistemática, Universidad Autónoma Metropolitana, Iztapalapa, Apartado Postal 55-535, 09340 México, D. F. irj@xanum.uam.mx
Pérez-García
Blanca
B
Mendoza Ruiz
Aniceto
A
D005718:Gametogenesis / Q000502:physiology*; D018525:Germination / Q000502:physiology*; D008800:Mexico; D029621:Polypodiaceae / Q000166:cytology / Q000254:growth & development*