Physiological and biochemical characteristics of Betula platyphylla in the conditions of Central and South Yakutia

Changes of electrophysiological characteristics and singularity of the maintenance of total proteins in runaways of Central- and South Yakutia populations of Betula platyphylla in seasonal cycle of devel-opment in the conditions of sharply continental climate of cryolitozone are described. Considerable re-duction of electric resistance of runaways is found during rest of plants in comparison with vegetative condition is found. Birches of Central Yakutia had higher indicators of relative electric conductivity at different frequencies (120/1000 Hz), than those in Southern Yakutia. It was determined groups of total proteins with molecular weights 14, 17, 26, 27, 32, 39, 49, 51 кД, having strongly pronounced seasonal dynamics and, possibly, connected with formation of plants frost resistance. At the same time it is not revealed accurate distinctions between two populations on singularities of the maintenance of given pro-teins.