Abstract
Douglas-fir has been the most common introduced conifer species in European plantations since 1825. The analysis of the characteristics of the introduced tree species by conducting genetic tests may predict the success of transfer of Douglas-fir seed of different provenances. The projection of the model of provenance test aims at providing information on adaptation to habitat and climate conditions in new ecosystems in Serbia. The original seed of Douglas-fir from North America was used for setting the experiment of different provenances at two sites in Serbia. The first experiment was set in a beech forest (Fagetum moesiacae montanum Jov. 1976) on district cambisol in the area of Juhor mountain in central Serbia, while the second one was set in Tanda near the town of Bor in eastern Serbia on the habitat of Hungarian and Turkey oak (Quercetum frainetto-cerris Rud. 1949) on eutric cambisol. Through the analysis of the anatomical structure of Douglas-fir needles this paper tends to determine whether there are statistically significant differences in the length of transfusion parenchyma of provenances located in different habitats. The important function of parenchyma in needles is the physiological process of water, organic and mineral matter flow. The effects of the sites where the experiments were set on the transfusion parenchyma of needles were determined by statistical analysis.
Highlights
The genus Pseudotsuga Carrière (Pinaceae Lindley) includes 8 to 12 species distributed in the western part of North America, Mexico and eastern Asia (L ave n d e r, Hermann, 2014)
The first experiment was set in a beech forest (Fagetum moesiacae montanum Jov. 1976) on district cambisol in the area of Juhor mountain in central Serbia, while the second one was set in Tanda near the town of Bor in eastern Serbia on the habitat of Hungarian and Turkey oak (Quercetum frainetto-cerris Rud. 1949) on eutric cambisol
The experiment in the area of the mountain Juhor in central Serbia was set in a beech forest (Fagetum moesiacae montanum Jov. 1976) on district cambisol, while the second experiment was set in Tanda near the town of Bor in eastern Serbia on the habitat of Hungarian and Turkey oak (Quercetum frainetto-cerris Rud. 1949) on eutric cambisol
Summary
The genus Pseudotsuga Carrière (Pinaceae Lindley) includes 8 to 12 species distributed in the western part of North America, Mexico and eastern Asia (L ave n d e r, Hermann , 2014). In its natural habitat and in the optimum conditions, it can reach up to 100 m in height, up to 4 m in diameter and up to 1300 years of age It occurs at a wide range of altitudes (from 0 to 3200 m), with varying climate conditions as well as geological substrates and soils (D a Ro n ch et al, 2016). As an exotic species it is grown in Europe, New Zealand, South America and elsewhere in the world (L ave n d e r, Hermann , 2014). It was introduced in Europe in the 19th century, at first as a decorative species, and later on as an economically important species in forestry. As it is less sensitive to drought than Silver fir, it has recently been increasingly used as its alternative in plantations at lower altitudes, or as a response to climate change (D a Ro n ch et al, 2016)
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