نتایج جستجو برای: pteridophyta
تعداد نتایج: 306 فیلتر نتایج به سال:
Kalibendo Waterfall located in the plantation area of coffee, rubber, and clove Kampunganyar Village, Banyuwangi Regency, Indonesia. The has a height up to 825 meters with choppy topography, type B climate on Schmidt-Ferguson scale so that it is suitable environment for ferns (Pteridophyta). In last five years, waterfall been developed as tourist can potentially affect diversity Pteridophyta. T...
We have constructed a phylogenic tree for green plants by comparing 5S rRNA sequences. The tree suggests that the emergence of most of the uni- and multicellular green algae such as Chlamydomonas, Spirogyra, Ulva, and Chlorella occurred in the early stage of green plant evolution. The branching point of Nitella is a little earlier than that of land plants and much later than that of the above g...
The spore morphology and wall ultrastructure of Sphaeropteris gardneri (Hook.) R.M. Tryon from Brazil were analyzed with LM, SEM and TEM. The spores are trilete with an ornamentation formed of short low ridges with spines in their margins. The exospore is 2.5microm thick, two- layered in section and single or branched channels are present. The perispore is 1.2microm thick and two-layered. The i...
Cercosporoid fungi (former Cercospora s. lat.) represent one of the largest groups of hyphomycetes belonging to the Mycosphaerellaceae (Ascomycota). They include asexual morphs, asexual holomorphs or species with mycosphaerella-like sexual morphs. Most of them are leaf-spotting plant pathogens with special phytopathological relevance. The only monograph of Cercospora s. lat., published by Chupp...
BACKGROUND AND AIMS To understand how gametophyte densities affect the sexual expression and sizes of Osmunda cinnamomea and to provide information on the density of growth needed to favour successful reproduction, fresh spores were sown at various densities and subsequent gametophyte growth was studied. METHODS Spores were sown and cultured in the laboratory. Subsequent gameophytes at differ...
Pteridophyta plants as plant communities in biodiversity have important ecological functions rivers and human life. One of the habitats for ferns upper reaches river Bengkulu is Pasmah River. The River a source water people its surroundings. To maximize role river, it necessary to make an inventory around one which ferns. This study aims determine diversity types variations pteridophyta sorus. ...
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