Tikhova G., Pridacha V., Sazonova T. Study of the water potential dynamics in Betula pendula Roth trees using cosinor- analysis // Principy èkologii. 2015. № 3. P. 60‒72. DOI: 10.15393/j1.art.2015.4321

Issue № 3

Original research


Study of the water potential dynamics in Betula pendula Roth trees using cosinor- analysis

   Galina Petrovna
Forest Research Institute of Karelian Research Center RAS, 11, Pushkinskaya st. , 185910 Petrozavodsk, Karelia, tikhovag@gmail.com
   Vladislava Borisovna
Forest Research Institute of Karelian Research Centre, RAS, 11, Pushkinskaya St., 185910 Petrozavodsk, Karelia, pridacha@krc.karelia.ru
   Tatyana Arkadyevna
Forest Research Institute of Karelian Research Centre, RAS, 11 Pushkinskaya St., 185910 Petrozavodsk, Karelia, Russia, sazonova@krc.karelia.ru
Betula pendula Roth
Betula pendula Roth var. carelica
water potential
diurnal biorhythm
seasonal dynamics
Summary: On the basis of measured data on Ψ diurnal and seasonal variations, the additive model of water potential (Ψ) seasonal dynamics in silver birch (Betula pendula Roth) and curly (Karelian) birch (Betula pendula Roth var. carelica) was developed using cosinor- analysis. The analysis of Ψ time series revealed that diurnal Ψ biorhythms in silver birch and curly birch shoots changed unidirectionally over the growing season although the scope of variability differed significantly. More substantial changes of the studied parameter during the growing season were noted in curly birch. It was shown that the modeling of biorhythms of water status parameters enables to understand better the processes of water regime regulation in plants, as it allows detecting specific intra-species differences, which are difficult to determine using conventional methods of statistical data treatment.

© Petrozavodsk State University

Reviewer: N. Vasilevskaya
Reviewer: A. V. Korosov
Received on: 21 July 2015
Published on: 12 November 2015


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