The seasonal changes in thermally-induced transitions of basic level chlorophyll fluorescence of the introduced at Central Urals and indigenous species of Picea
This research paper introduces results of study of changes in thermally-induced transitions of basic level chlorophyll fl of the introduced at Central Urals species - Colorado and White spruce ( Picea pungens Engl. "Glauca", P. canadensis Britt.), as well as the indigenous species - Siberian spruce ( P. obovata Ledeb.) in connection with the processes of going into and coming out of dormancy. In the process of analyzing of obtained thermograms it was recorded that the dormancy breaking of introduced species start 1-2 months earlier (mart - april), and the processes of coming out of dormancy start one month later as against indigenous species (november). In a similar way, on basis of studying of the fl level at the different stages of a temperature curve during the winter the assumption was made that considerable destruction of all chloroplast inner membrane constituents of introduced species and that partial preservation of chloroplast stromal structure of indigenous species occurs.