Morfogénesis de los gametofitos de especies mexicanas de Pleopeltis (Polypodiaceae, subfamilia Pleopeltoideae)
Date
Authors
Reyes Jaramillo, Irma
Pérez García, Blanca
Mendoza Ruiz, Aniceto
Journal Title
Journal ISSN
Volume Title
Publisher
Universidad de Costa Rica
Abstract
Description
Se describe y compara la morfología y el desarrollo de la fase sexual de siete especies mexicanas del género Pleopeltis. P. astrolepis, P. crassinervata, P. macrocarpa, P. polylepis y P. revoluta todas ellas presentan germinación de tipo-Vittaria. Para P. angusta y P. mexicana se propone un nuevo patrón de germinación tipo-Pleopeltis. El desarrollo protálico de P. astrolepis, P. crassinervata, P. macrocarpa, P. polylepis y P. revoluta es tipo-Drynaria. P. angusta y P. mexicana son tipo-Ceratopteris. Los gametangios son del tipo común de los helechos leptosporangiados; después de seis y medio meses de cultivo no se formaron esporofitos.
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.
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.
Keywords
epiphytic, gametophyte, fern, morphogenesis, pleopeltis, polypodiaceae