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

Riitta Höyhtyä (email), Heikki Hänninen

Effect of photon flux density on bud dormancy release in Norway spruce seedlings.

Höyhtyä R., Hänninen H. (1991). Effect of photon flux density on bud dormancy release in Norway spruce seedlings. Silva Fennica vol. 25 no. 3 article id 5452. https://doi.org/10.14214/sf.a15610

Abstract

The effect of photon flux density on bud dormancy release in two-year-old seedlings of Norway spruce (Picea abies (L.) H. Karst.) was examined. The seedlings were first chilled for 0–21 weeks under natural conditions and then forced in a warm greenhouse either in low (15 μEm-2s-1) or in high (300 μEm-2s-1) photon flux density. Occurrence of bud burst was observed in the forcing conditions, and the observations were used for estimating the cumulative frequency distribution of the chilling requirement for growth competence. The estimated distribution had greater variance in the low photon flux density than in the high photon flux density forcing. This finding suggests that unnaturally low photon flux densities during forcing may yield overestimates of the genetic within-population variation in the chilling requirement for growth competence.

The PDF includes an abstract in Finnish.

Keywords
Picea abies; dormancy; seedlings; buds; light intensity; chilling requirement; annual habit; development

Published in 1991

Views 4910

Available at https://doi.org/10.14214/sf.a15610 | 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
Send to email
Niskanen A., (1999) The financial and economic profitability of fiel.. Silva Fennica vol. 33 no. 2 article id 664 (remove) | Edit comment
Saarilahti M., Ole-Meiludie R. E. L. (1987) Production rate and work strain on workers in cu.. Silva Fennica vol. 21 no. 1 article id 5308 (remove) | Edit comment
Mäkelä M., (1977) The amounts of logging residues and stump and ro.. Silva Fennica vol. 11 no. 3 article id 4974 (remove) | Edit comment
Liu X., Xu H. et al. (2004) Nutrient distribution in Picea likiangensis tree.. Silva Fennica vol. 38 no. 3 article id 412 (remove) | Edit comment
Laatikainen P., (1973) Milled peat and milled bark as substrate for Sco.. Silva Fennica vol. 7 no. 1 article id 4877 (remove) | Edit comment
Jalkanen R., Jalkanen E. et al. (1984) Ten-year effects of breaking the soil surface on.. Silva Fennica vol. 18 no. 2 article id 5211 (remove) | Edit comment
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