Analysis of the Chlorophyll Fluorescence Parameters in the Bark Chloroplasts of Poplar from Different Areas of Ulan Bator
"Математика. Компьютер. Образование". Cб. трудов XVI международной конференции. Под общей редакцией Г.Ю. Ризниченко Ижевск: Научно-издательский центр "Регулярная и хаотическая динамика", 2009. Vol. 2. Pp. 180-197. (accepted)
Fluorescence methods were used for monitoring of poplar from different areas of Ulan Bator. The Fv/Fm ratio was similar in control and annual shoots of trees from the city which indicated a relatively favourable ecological situation. However, histograms of the values Fv/Fm distribution and decreased ∆F/Fm’ ratio indicate deterioration of the physiological state of these trees. Analysis of the chlorophyll fluorescence transients showed changes of redox state of plastoquinone pool, electron transport rate in pho-tosystem II, decrease of the size of the Chl. antenna and the number of active photosystem II reaction centers. Derangements of photosynthetic process appeared only in triennial shoots. This fact suggests about applicability of fluorescence probing of the three-years old tree shoots for evaluation physiological state of the whole plant as well as for monitoring ecological state of the phytocenosis.