Evidence of Photoperiodic Ecoytypes in Trees
Vaartaja O. 1959. Evidence of Photoperiodic Ecoytypes in Trees. Ecological Monographs. 29(2):91-111
This study is an atempt to determine whether photoperiodic variation exists within species of the most important coniferous and deciduous genera, mainly from Europe and North America. Several photoperiodic treatments were utilized to facilitate analysis of differences between northern and southern seedlings. The treatments were arranged by alternating light and dark periods in such a manner that confounding the treatments with differences in other factors was minimized. A short summary of the main results was published earlier (Vaartaja 1957b).
- Type
- Journal Article
- Authors
- Vaartaja, O.
- Units
- SODN
- Keywords
- Botany (Reproduction Dispersal Behavior), coniferous forests, deciduous forests, Methods (General Laboratory), photoperiodic ecotypes