Full text of this article is only available in PDF format.

Heikki Hänninen (email)

Modelling bud dormancy release in trees from cool and temperate regions

Hänninen H. (1990). Modelling bud dormancy release in trees from cool and temperate regions. Acta Forestalia Fennica no. 213 article id 7660. https://doi.org/10.14214/aff.7660


The premises of several models obtained from literature on bud dormancy release in trees from cool and temperate regions differs from each other with respect to responses to air temperature during the rest period of the buds. The predicted timing of bud burst in natural conditions varied among the models, as did the prediction of the models for the outcome of a chilling experiment.

Experimental results with two-year old seedlings of Scots pine (Pinus sylvestris L.) and Norway spruce (Picea abies (L.) H. Karst.) did not agree with any of the models. The experimental results also deviated from abundand earlier findings, which also disagreed with any of the models. This finding suggests that Finnish provenances of Scots pine and Norway spruce differ from more southern provenances with respect to temperature regulation of bud dormancy release.

A synthesis model for the effects of air temperature on bud dormancy release in trees was developed on the basis of the previous models and the experimental results of both the present and previous studies. The synthesis model contains part of the original models as special cases. The parameters of the synthesis model represent several aspects of the bud dormancy release of trees that should be addressed separately with each species and provenance in experimental studies. Further aspects of dormancy release were discussed, in order to facilitate further development of the models.

The PDF includes a summary in Finnish.

Pinus sylvestris; Picea abies; climatic adaptation; annual cycle; bud dormancy; quiescence; rest; growth competence

Published in 1990

Views 2538

Available at https://doi.org/10.14214/aff.7660 | Download PDF

Creative Commons License CC BY-SA 4.0

Click this link to register to Silva Fennica.
Log in
If you are a registered user, log in to save your selected articles for later access.
Contents alert
Sign up to receive alerts of new content

Your selected articles
Your search results
Höyhtyä R., Hänninen H. (1991) Effect of photon flux density on bud dormancy re.. Silva Fennica vol. 25 no. 3 article id 5452
Valkonen M.-L., Hänninen H. et al. (1990) Frost hardiness of Scots pine seedlings during d.. Silva Fennica vol. 24 no. 4 article id 5433
Hänninen H., Pelkonen P. (1988) Effects of temperature on dormancy release in No.. Silva Fennica vol. 22 no. 3 article id 5357
Hänninen H., (1987) Effects of temperature on dormancy release in wo.. Silva Fennica vol. 21 no. 3 article id 5319
Hänninen H., Kramer K. (2007) A framework for modelling the annual cycle of tr.. Silva Fennica vol. 41 no. 1 article id 313