Variability of potassium content in the needles of Douglas-fir provenances of Canadian origin
2020
Jovanović, Filip | Lavadinović, Vera | Rakonjac, Ljubinko | Stajić, Snežana | Miletić, Zoran | Ćirković-Mitrović, Tatjana
The provenance test model is based on the analysis of growth,anatomical, physiological, chemical, mechanical, and other properties of an allochthonousspecies to justify its transfer from the place of origin to new ecosystems. Douglas-fir is oneof the most common allochthonous conifer species in the forest plantations of Europe.Given that the analysis of different physiological properties of trees is important for theintroduction of specified provenances into new habitats, this paper presents the results ofan investigation of the variability of potassium content in young Douglas-fir needles of 14Canadian provenances raised on two experimental sites in Belgrade. Potassium is anessential element involved in a number of biochemical and physiological processes andplays a significant role in the adaptation of plants on biotic and abiotic stress factors.Determination of the deviation of potassium content in the needles of each Douglas-firprovenance studied was performed using the Z-test.
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