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

Veikko Hintikka

Germination ecology of Galeopsis bifida (Lamiaceae) as a pioneer species in forest succesion.

Hintikka V. (1987). Germination ecology of Galeopsis bifida (Lamiaceae) as a pioneer species in forest succesion. Silva Fennica vol. 21 no. 3 article id 5320. https://doi.org/10.14214/sf.a15477

Abstract

The occurrence of Caleopsis bifida on clear-cut and burned forest soil and its disappearance in 4–6 years after disturbance is attributed to its germination ecology. Initially the seeds are dormant 96–100% and remain dormant in nylon gaze bags in different types of forest humus layers at least 10 years. Dormancy is released in laboratory (1) by treatment of 100 ppm aqueous solution of GA3, (2) by heating the dormant seeds to 40–55°C for 1–5 h, and (3) by 1% KNO3 solution. It is concluded that conditions in clear-cut and burned areas favour germination of seeds in regard to temperature and content of nitrates in contrast to humus of closed vegetation where the seeds remain dormant.

The PDF includes an abstract in Finnish.

Keywords
Galeopsis bifida; germination ecology; pioneer species; forest succession; release of seed dormancy; clear-cut area; prescribed burning

Published in 1987

Available at https://doi.org/10.14214/sf.a15477 | Download PDF

Creative Commons License

Register
Click this link to register for Silva Fennica submission and tracking system.
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