Resumo

HERRERA-SORIANO, A. et al. Morphogenic description of gametophyte and sporophyte of Pleopeltis astrolepis (Liebm.) Fournier (Polypodiaceae-Polypodiidae). Polibotánica [online]. 2018, n.46, pp.179-191. ISSN 1405-2768.  https://doi.org/10.18387/polibotanica.46.11.

We analyzed and described the morphogenetic development of gametophyte and sporophyte of Pleopeltis astrolepis (Liebm.) Fourn. It is an epiphyte species that is distributed from Mexico to Brazil, the specimen was collected in a cloud forest at San Bartolo Tutotepec in the state of Hidalgo, at an altitude of 1,000 meters. The spores were sown in glass franks with natural substrates, some with maquique (fibers of the stem of Cyathea sp.) and another in plant litter (bought in Xochimilco for garden plants).

The germination takes place within the sporangia. The gametophyte development was Drynaria type in both substrates, a lot of sporophytes were obtained. The gametophytes were chordate to chordate-lobed shaped and prothallus bisexual. The gametangia were developed in 240 days in maquique and 330 days in plant litter. Ecological aspects of the differences in development are discussed.

Palavras-chave : gametophytes and sporophytes development; habitat; epiphytic ferns; prothallus bisexual; natural substrates.

        · resumo em Espanhol     · texto em Espanhol     · Espanhol ( pdf )