Title: Swedish lodgepole pine seed orchard crops tested in north-west Russia
Abstract: Abstract 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. Keywords: Exotic treesfield trialsheight growthlodgepole pineScots pinevitality Acknowledgements I am very grateful for help Dr Finnvid Prescher and Jan Nygren (Svenska Skogsplantor AB) as well as Dr Torgny Persson and Dr Bengt Andersson (SkogForsk) for the Swedish lodgepole pine seed orchards seed lots provided. Many thanks go to the personnel of Forest Committee of the Komi Republic for seedlings production and establishment of field trials. I would like to acknowledge two anonymous reviewers for valuable comments and suggestions on the manuscript. Special thanks also to referee 2 for revising the language.
Publication Year: 2012
Publication Date: 2012-10-01
Language: en
Type: article
Indexed In: ['crossref']
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