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Swedish lodgepole pine seed orchard crops tested in north-west Russia

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Tree vitality and height of lodgepole pine (Pinus contorta var. latifolia) originating from the six Swedish seed orchards and native Scots pine (Pinus sylvestris L.) were estimated in three 8-yr-old test plantations established in the Komi Republic (north-west Russia). A randomized row-plot design with 9–13 replicates of each entry was used. In general, the Scots pine tree vitality was better than that of lodgepole pine but these differences were significant only for seed sources of southern origins Larslund, Rumhult, and Österby. On the contrary, the lodgepole pine height growth was faster (6–21%) except for seed sources of southern origins Rumhult and Österby. In comparison with the native Scots pine, lower mean heights (4–10%) were recorded for these seed sources. Among the lodgepole pine seed sources the northern origins had better vitality, while the effect of latitude on the tree height was insignificant.
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Keywords: Exotic trees; Scots pine; field trials; height growth; lodgepole pine; vitality

Document Type: Research Article

Affiliations: Institute of Biology, Komi Science Center,Russian Academy of Sciences, Syktyvkar, Russia

Publication date: 2012-10-01

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