Evacuation as a means of conserving forest gene resources for fir and beech.

Stockholm

1995

S.397-401

Bandaufführung

11023S

175968

The effect of competition on five Norway spruce (Picea abies (L.) Karst.) clones of different provenances growing monoclonally (intragenotypic competition) and in intimate mixtures (intergenotypic competition) at close spacing were studied until the age of five years. In height, root collar diameter, dry weight, and mortality rate, clones reacted differently to the treatments, showing significant inherent competitive differences. A positive competitive reaction between certain clones can raise total increment by overcom‐pensation and can reduce risks by maintaining genetic diversity until harvest.Keywords: intragenotypic competition, intergenotypic competition; clonal mixtures; Picea abies.