Model systems

Variation in spectral reflectance of silver birch

We study genotype- and population-related variation in spectral reflectance of silver birch (Betula pendula Roth).

Silver birch is economically important in Finland, has a wide geographic range across latitudes and its foliar chemistry is well-known. Thus, it is a good study system for intraspecific variation.

Silver birch (Betula pendula Roth.) leaves.

Lichen species recognition for environmental monitoring

Relative abundance of different lichen species is utilized to monitor environmental changes. In remote sensing, airborne devices of small size and limited spectral resolution are utilized for lichen species recognition . Our aim is to find the optimal spectral reflectance features for species differentiation in environmental monitoring.

Spectral imaging of different lichen species. On the left RGB, in the middle false colour image from VNIR range, on the right false colour image from SWIR.

Forest tree seeds

Seeds are economically the most important products of the plant kingdom. The quality control for seed production requires efficient techniques that can be incorporated in practical applications. Viable, empty and damaged seeds can be recognized by hyperspectral and thermal imaging techniques with high precision.

Thermal imaging of spruce seeds after a light pulse.

Stress responses of Arabidopsis thaliana

Arabidopsis thaliana (thale cress) is the  most common model organism in plant research. Changes in spectral reflectance of Arabidopsis plants due to different stress treatments are studied.


Arabidopsis thaliana (thale cress) accessions grown in different growing conditions.