RESEARCH ON THE PHYSIOLOGY OF SPRING PLANTS THAT INHABIT OAK FORESTS

Abstract

The paper presents the results of the research carried on the physiology of the spring plants belonging to the following species: Ficaria verna, Gagea lutea, Anemone ranunculoides, Scilla bifolia, Corydalis cava. The physiological indices which have been analyzed were: photosynthesis, transpiration, total water content, free and linked water, osmotic pressure and suction force. There were recorded increased values of transpiration, a high content of total water, a low percentage of linked water and low values of osmotic pressure at all the plants which have been studied. The low temperature of the soil during the flowering period of these plants does not influence the normal activity of the roots. The defoliated forest allows for the sun's rays to penetrate to the ground level, but the values of photosynthesis do not increase in proportion to the intensity of the light, remaining relatively constant until the evening.