Comparison of circadian rhythms of plant leaf temperature and dew point makes it possible to identify time intervals of dew falls. Using the dragon tree (Dracaena draco L.) as an example, it was shown that under arid conditions a CAM plant is able to condense and absorb up to ½ liter of water from...

In Russia's North Caucasus where drought is frequent the apple tree is one of the most important garden crops. Physiological and biochemical studies are necessary to assess adaptiveness of apple varieties to stressors during summer, in particular, to summer drought. The purpose of this work is to...

The ratio of the primary mechanisms of carbon deposition in Scots pine (Pinus sylvestris L.) during the growing season was investigated. Temperature regulation of trunk respiratory expenditure and correlation of crown photosynthesis with trunk respiratory activity in spring and autumn have been...

The data on stomatal conductivity of the Siberian spruce needles in bilberry spruce forest and spruce regrowth on a 4-year old clearcut in the middle taiga subzone (62° 17' N 50°40' B) were assessed. The highest transpilration and stomatal clonductivity values of needles were recorded on the...

Indirect arguments in favor of the assumption «the drying of the tree tops in the stems of Gmelin larch (Larix gmelinii (Rupr.) Rupr.), growing on permafrost soil of the northern slope is due to the discrepancy between the structure of the water transport system in the stem and physiologically...

Biology and anatomy of roots, haustoria and leaves of the hemiparasitic species Pedicularis sceptrum-carolinum L. were studied. It is shown that P. sceptrum-carolinum can absorb water from the host plant since a juvenile stage of ontogenesis, and depends on the presence of suitable host plants in...

Article analyzes the scientific achievements and heritage of Mikhail Antonovich Shemberg, a well-known dendrologist, who made a great contribution to the study of Siberian forests. He carried out a critical taxonomic treatment of birch Betula L. genus, developed new methodological approaches based...

To determine the variety of Pseudotsuga, it is proposed to use isoenzyme spectrum of needles and buds. Differences in the isoenzyme composition of the needles and buds, as well as biological and morphological differences, make it possible to classify the green and gray varieties as separate species.

Bioelectric potentials (BEP), impedance of alburnum and temperature features of tree trunks were used for a diagnostics of coniferous trees physiological state in natural conditions. As a result it was determined that while thriving trees have BEP in a range of 180-210 mV, the weakened ones have...

The article presents the results of the analysis of experimental materials obtained at the integrated forest hydrological station during the formulation of an active experiment on forestry in small catchments. Changes in the elements of the water balance of mountain slopes on small (elementary)...