Dependence of douglas-fir mean height on geographic origin of Canadian provenances in seedling nursery conditions

Abstract

Seed and seedling tests, performed with the aim of acquiring knowledge about the genetic potential of selected provenances, are generally one of the first trials in a complex system of comparative examinations to be conducted upon the introduction of alien tree species. This paper presents the results of the investigation of the dependence of the mean height of 14 Canadian origin Douglas-fir provenances, originating from latitude 49° 10' to 51° 35', longitude 11 ° 20' to 120° 10' and the altitude of 488 to 1,070 m, on the geographic origin. Understanding the variations in the mean height of a seedling is of major importance for acquiring knowledge on genetic potential of selected provenances, which are one of the key parameters for the introduction of Douglas fir into relevant forest sites in Serbia.