Siberian Federal University

Issue

Journal of Siberian Federal University. Biology. 2011 4 (1)

Authors

Velisevich, Svetlana N.; Goroshkevich, Sergey N.

Contact information

Velisevich, Svetlana N. : Institute for Monitoring of Climatic and Ecological Systems SB RAS , 10/3 Academichesky pr., Tomsk, 634055 Russia , e-mail: ; Goroshkevich, Sergey N. : Institute for Monitoring of Climatic and Ecological Systems SB RAS , 10/3 Academichesky pr., Tomsk, 634055 Russia

Keywords

Pinus sibirica Du Tour; shoot; organogenesis; growth; ontogenesis; Siberian stone pine; Pinus sibirica Du Tour

Abstract

On the example of male and female shoots in young (140 years), middle-aged (235 years) and old (346 years) generative trees of Siberian stone pine (Ket-Chulym rivers, south-eastern part of Western Siberia) the effect of tree age on the ratio of vegetative and generative processes is studied. The traits characterizing vegetative development of generative shoots are reduced linear during the reproductive period of ontogenesis. The traits of the generative development of shoots and indirectly related vegetative traits reached maximum values in middle-aged trees. At the peak of reproduction increases the direct and indirect relationship between vegetative and generative traits of shoots: increased vegetative organogenesis in young trees has effected the cone initiation, reduced vegetative development in middle age has a positive effect on the cone formation and continuation this trend due to tree aging even strengthens this relationship. It is suggested that observed differences due to: (1) changing the balance between vegetative and generative organogenesis in the seasonal cycle of development of shoots and (2) ontogenetic changes in the root-leaf functional correlation.

Pages

23-35

Paper at repository of SibFU

https://elib.sfu-kras.ru/handle/2311/2370

This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License (CC BY-NC 4.0).