%0 Research article
%T Survival, height growth and damages of Siberian (Larix sibirica Ledeb.) and Dahurian (Larix gmelinii Rupr.) larch provenances in field trials located in southern and northern Finland
%A Lukkarinen, Antti J.
%A Ruotsalainen, Seppo
%A Nikkanen, Teijo
%A Peltola, Heli
%D 2010
%J Silva Fennica
%V 44
%N 5
%R doi:10.14214/sf.120
%U https://silvafennica.fi/article/120
%X The aim of this study was to analyse differences in the survival and  height growth of, as well as damages to Siberian (Larix sibirica Ledeb.)  and Dahurian (Larix gmelinii Rupr.) larch provenances over four growing  seasons in field trials established in 2006 in southern (Punkaharju)  and northern Finland (Kivalo). In this context, the study also  investigated if the geographical and climatic conditions of the origin  of the provenance could explain the differences between the provenances.  The study material consisted of 20 Russian Siberian and Dahurian larch  provenances and five seed sources from Finland (4) and Russia (1) as  comparison lots. It was found that the Finnish seed sources of Siberian  larch survived well in both the Kivalo and Punkaharju trials. Five  northern latitude Russian provenances, of which one was Dahurian and the  remainder were Siberian larches, had the highest survival in Kivalo.  However, the differences observed in survival between provenances were  only significant (p < 0.05) in Kivalo. Regardless of the trial, the  differences, however, in height growth were significant and large  between provenances. The southern Dahurian larches had a superior height  growth in Punkaharju. The northern Dahurian larch provenance from  Magadan (59°50′N, 150°40′E) had the largest height growth in Kivalo,  among some northern Siberian larches. Damages were diverse, though  Dahurian larches had less mammal damage than the Siberian larches. In  general, the differences between provenances were not significant.  Latitude and altitude best explained the differences between  provenances, but also mean temperature, temperature sum and  continentality index affected them (p < 0.05).