Quantitative characteristics of the phases of winter dormancy of conifer species at a site in Central Siberia

Тип публикации: статья из журнала

Год издания: 2016

Идентификатор DOI: 10.1007/s40415-016-0298-3

Ключевые слова: Abies, Abscisic acid, Chlorophyll fluorescence, Photosynthetic pigments, Picea, Pinus

Аннотация: Traditionally the registration of seasonal changes in plant growth and development has been carried out phenologically, i.e., qualitatively using visual inspection. However, since the process of plant acclimatization to winter dormancy involves reversible biochemical and physiological changes at the level of cells, quantitative methods can be applied to determine the duration and the depth of winter dormancy in perennial plants. We used a method based on detecting thermally induced changes in the zero-level fluorescence (TICZF) on needles from four Siberian coniferous trees. Needles of Picea obovata Ledeb. and Abies sibirica Ledeb. recover from the state of winter dormancy much faster than those of Pinus sibirica Du Tour and Pinus sylvestris L. The photosynthetic apparatus in the needles of A. sibirica may be damaged during the spring period, characterized by unstable weather, when after several days of warm weather, the plants prematurely recover from winter dormancy. We conclude that under conditions of climate warming tree, species like A. sibirica may suffer from severe diebacks due to desiccation caused by premature break of winter dormancy.

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Издание

Журнал: BRAZILIAN JOURNAL OF BOTANY

Выпуск журнала: Vol. 39, Is. 4

Номера страниц: 1005-1014

ISSN журнала: 18069959

Место издания: SAO PAULO

Издатель: SOC BOTANICA SAO PAULO

Авторы

  • Pakharkova Nina V. (Siberian Fed Univ, Pr Svobodny 79, Krasnoyarsk 660041, Russia)
  • Heilmeier Hermann (TU Bergakad Freiberg, Leipziger Str 29, D-09599 Freiberg, Germany)
  • Gette Irina G. (Siberian Fed Univ, Pr Svobodny 79, Krasnoyarsk 660041, Russia)
  • Andreeva Elena B. (State Nat Reserve Stolby, Karernaya 26a, Krasnoyarsk 660006, Russia)
  • Grachev Alexi M. (Russian Acad Sci, Inst Geog, 29 Staromonetniy Pereulok, Moscow 119017, Russia)
  • Gaevskiy Nikolay A. (Siberian Fed Univ, Pr Svobodny 79, Krasnoyarsk 660041, Russia)
  • Grigoriev Yurii S. (Siberian Fed Univ, Pr Svobodny 79, Krasnoyarsk 660041, Russia)

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