[Orthostatic hypotension in patients with Parkinson's disease].

Orthostatic hypotension (OH) is a common vegetative symptom of Parkinson's disease (PD), which is predominantly neurogenic in nature. Detection and treatment of OH is of great importance, since it affects daily activity and increases the risk of falls. In the long term it damages target organs - the heart, kidneys and brain.

[Effects of elevated atmospheric ethylene on the development of regenerative organs of short-stem wheat cultivars].

Laboratory experiments were performed to study cytoembryologic development of regenerative organs of wheat cult. 20-1-Shortstem and cult. Apogee in atmosphere with elevated concentration of ethylene.

[Embryological investigation of super-dwarf wheat grown in laboratory experiment with elevated content of ethylene in atmosphere].

Data of the cytoembryological analysis of plants of super-dwarf wheat grown in laboratory experiment with elevated ethylene content in atmosphere were compared with results of space experiment and the ground control with ambient ethylene concentration. It was shown that crop barrenness in both the space and ground experiments was caused by exposure to increased ethylene throughout the whole ontogenesis which made pollen nonviable. The cytogenetic analysis revealed that male sterility of the wheat flowerlets in space flight evolved, as a rule, earlier and was deeper by character, i.

[Cyto-embryologic investigation of super dwarf wheat grown on board of the Mir orbital complex].

The cytoembryologic analysis of wet and dry samples of super dwarf wheat cultivated in greenhouse SVET aboard the MIR station over the whole cycle of vegetation was made with the use of light microscopy. Characteristic features of wheat development in space flight are plentiful early tillering, and formation and rapid growth of side shoots. Elementary spikelets in the composite head were more numerous but the top spikelets were rudimentary and, therefore, the ripe head contained less of these spikelets as compared with the ground controls (9-13 and 14, respectively).