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

Erkki Hallman (email), Pertti Hari, Pentti K. Räsänen, Heikki Smolander

Effect of planting shock on the transpiration, photosynthesis, and height increment of Scots pine seedlings

Hallman E., Hari P., Räsänen P. K., Smolander H. (1978). Effect of planting shock on the transpiration, photosynthesis, and height increment of Scots pine seedlings. Acta Forestalia Fennica no. 161 article id 7595. https://doi.org/10.14214/aff.7595

Abstract

In the experiment Scots pine (Pinus sylvestris L.) seedlings were transplanted out in the field. The effect of the treatments on gas metabolism and daily height increment were examined. The seedlings were 5-year old Scots pine plants growing in clay pots, covered with plastic bags. Transpiration and photosynthetic rates were monitored with open IRGA measuring system for a few days before being subjected to the treatments and for one month after. In addition, the daily amounts of transpired water and daily height increments were measured. A model for the potential rate of each metabolic process was constructed.

Planting and additional exposure had a strong and rather permanent effect on the self-regulation of the processes. This effect is very similar to that caused by water deficit. Exposure makes the disturbance more pronounced. Transpiration of the transplanted seedlings decreased in a few days after planting to less than half of the potential value and that of the exposed ones decreased to a quarter of the potential value. The daily amounts of photosynthesis decreased to half of the potential value. There was no recovery in photosynthesis during the whole monitoring period of four weeks. There was a slight recovery in transpiration about five weeks after transplanting.

Thus, the treatment probably generated stress conditions throughout the whole growing period, which is characterized by strong self-regulation of photosynthesis and transpiration, thus causing an essential decrease in the total amount of CO2 fixed. The photosynthesis was depressed especially at elevated temperatures after planting, as during water deficit. Planting and additional exposure did not produce any detectable changes in the dependence of the growth rate on temperature or in the effect of self-regulation on height growth. On the other hand, the level of growth was decreased as a result of planting out.

The PDF includes a summary in Finnish.

Keywords
Pinus sylvestris; photosynthesis; Scots pine; planting; stress; seedlings; drought; transpiration; water deficit

Published in 1978

Views 2042

Available at https://doi.org/10.14214/aff.7595 | Download PDF

Creative Commons License CC BY-SA 4.0

Register
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
Smolander H., Kellomäki S. et al. (1990) The effect of nitrogen concentration on needle p.. Silva Fennica vol. 24 no. 1 article id 5414
Smolander H., Lappi J. (1984) The interactive effect of water stress and tempe.. Silva Fennica vol. 18 no. 2 article id 5210
Hari P., Kanninen M. et al. (1979) An automatic system for measurements of gas exch.. Silva Fennica vol. 13 no. 1 article id 5019
Pelkonen P., Smolander H. (1976) Increase in gas exchange rate in Scots pine by t.. Silva Fennica vol. 10 no. 2 article id 4940
Smolander H., (1984) Measurement of fluctuating irradiance in field s.. Acta Forestalia Fennica vol. 0 no. 187 article id 7634
Hallman E., Hari P. et al. (1978) Effect of planting shock on the transpiration, p.. Acta Forestalia Fennica vol. 0 no. 161 article id 7595
Luoranen J., Rikala R. et al. (2011) Machine planting of Norway spruce by Bracke and .. Silva Fennica vol. 45 no. 3 article id 107
Kankaanhuhta V., Saksa T. et al. (2010) The effect of quality management on forest regen.. Silva Fennica vol. 44 no. 2 article id 157
Hänninen H., Luoranen J. et al. (2009) Late termination of freezer storage increases th.. Silva Fennica vol. 43 no. 5 article id 175
Kankaanhuhta V., Saksa T. et al. (2009) Variation in the results of Norway spruce planti.. Silva Fennica vol. 43 no. 1 article id 217
Luoranen J., Lappi J. et al. (2006) Field performance of hybrid aspen clones planted.. Silva Fennica vol. 40 no. 2 article id 342
Luoranen J., Rikala R. et al. (2005) Extending the planting period of dormant and gro.. Silva Fennica vol. 39 no. 4 article id 361
Stenberg P., Rautiainen M. et al. (2004) Reduced simple ratio better than NDVI for estima.. Silva Fennica vol. 38 no. 1 article id 431