Differences in the climatic adaptation of silver birch (Betula pendula) and downy birch (B. pubescens) in Finland based on male flowering phenology

Alpo Luomajoki
Bok · Engelsk · 1999

Utgitt	Helsinki , 1999
Omfang	35 s. : fig.
Emner	fenologi blomstring blomstringstidspunkt pollen fotoperioder tilpasning