Changes in the anatomical structure of tree rings of the rootstock and scion in the heterografts of Siberian pine

Тип публикации: статья из журнала

Год издания: 2013

Идентификатор DOI: 10.1007/s00468-013-0909-6

Ключевые слова: Tree rings, Anatomical characteristics, Grafts, Xylem differentiation, Graft union, Anatomical characteristics, Graft union, Grafts, Tree rings, Xylem differentiation, Anatomical characteristics, Anatomical structures, Graft unions, Individual characteristics, Interannual variation, Non-uniform distribution, Tree rings, Xylem differentiation, Grafts, Plants (botany), Forestry, Anatomy, Forestry, Grafts, Plants, Xylem, Pinus sibirica, Pinus sylvestris

Аннотация: The analysis of the anatomical characteristics of tree rings of the Pinus sibirica scions and Pinus sylvestris rootstocks is presented. The main anatomical features maintain the seasonal dynamics characteristic of the reference (ungrafted) trees of scion and rootstock, pointing to the stability of the genetic control of the xylem differentiation. However, various anatomical characteristics are reduced for rootstocks and increased for scions relative to the reference trees. A mechanism consistent with our results is that the graft union zone creates a barrier for the ascending and descending transport of substances, including phytohormones. The reaction of the scion and rootstock to climatic factors is weakened relative to the reaction of the reference trees. Thus, the presumed shift towards phytohormone disbalance reduces the influence of external factors on xylem differentiation. The interannual variation of the individual characteristics of the scions and rootstocks is increased relative to the reference trees, reflecting either the influence of the graft partners on each other or the non-uniform distribution of the growth regulators across the graft union. Thus, heterografts can be used to evaluate the interaction of the internal and external mechanisms of xylem differentiation.

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Издание

Журнал: TREES-STRUCTURE AND FUNCTION

Выпуск журнала: Vol. 27, Is. 6

Номера страниц: 1621-1631

ISSN журнала: 09311890

Место издания: NEW YORK

Издатель: SPRINGER

Авторы

  • Darikova Y.A. (Siberian Federal University)
  • Vaganov E.A. (V. N. Sukachev Institute of Forest,Siberian Branch of the Russian Academy of Sciences)
  • Grachev A.M. (Siberian Federal University)
  • Kuznetsova G.V. (V. N. Sukachev Institute of Forest,Siberian Branch of the Russian Academy of Sciences)

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