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Contemporary Problems of Ecology

2015 year, number 5

Adaptive Strategies of Homosporous Helophytic and Hydrophytic Ferns

N. M. DERZHAVINA
Orel State University, 302026, Orel, Komsomolskaya str., 95
Keywords: helophytes, hydrophytes, aerohydatophytes, acrophyllomic and laminаlic buds, hydropotes

Abstract

On the basis of the study of helophytic and hydrophytic ferns, as well as literature data, adaptive strategies of their sporophytes were identified. A complex anаlysis of the photosynthetic apparatus of the plants was carried out at different levels of its organization : a) fronds, b) mesophyll cells, c) plastid apparatus. Among these species there had been a selection of the plants which were characterized by various biomorphs, active vegetative reproduction and accelerated passing of ontogenetic phases. As the result, the structures promoting aeration, maintenance of optimum water balance and effective photosynthesis had appeared.