%0 Research note
%T Climatic adaptation of seed maturity in Scots pine and Norway spruce populations
%A Fedorkov, Aleksei
%D 2001
%J Silva Fennica
%V 35
%N 1
%R doi:10.14214/sf.609
%U https://silvafennica.fi/article/609
%X Seed maturation of Scots pine and Norway spruce in a provenance  experiment at Kortkeros (northern Russia) was examined by the X-ray  method. Logarithmic relationships were found between seed anatomy  development and long-term average thermal sum. Seed development in the  northern populations of Scots pine and Norway spruce was a little faster  than in the southern ones.