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A genecological investigation of the annual rhythm of Pinus contorta Dougl. and a comparison with Pinus silvestris L.

Hagner, Mats (1970). A genecological investigation of the annual rhythm of Pinus contorta Dougl. and a comparison with Pinus silvestris L. Technical Report. Stockholm: Predecessors to SLU > Royal School of Forestry, Sveriges lantbruksuniversitet. Studia forestalia Suecica ; 81
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Abstract

In a material of 27 provenances of two-year-old Pinuss contorta it was found that the annual rhythm, illustrated by degree of lignification, colour of the bark on the terminal shoot, dry/fresh weight of needles, shoot extension, budsetting and electrical resistance, was related to the geographic and climatic parameters of seed source. Regression analyses showed that the rhythm was most closely correlated with the mean January daily temperature and latitude. The analyses also showed how latitude and altitude interact. Budsetting was found to have a pattern of geographic variation that was different from the other expressions of rhythm. A comparison between P. contorta and P, silvestris with reference to lignification, laboratory frost resistance and field hardiness, indicated that the Canadian pine, which withstands a Scandinavian climate far north of its seed source, presumably manages to do so in spite of a relatively low degree of winter adjustment in late September.

Authors/Creators:Hagner, Mats
Title:A genecological investigation of the annual rhythm of Pinus contorta Dougl. and a comparison with Pinus silvestris L.
Series/Journal:Studia forestalia Suecica (0039-3150)
Year of publishing :1970
Number:81
Number of Pages:26
Place of Publication:Stockholm
Publisher:Skogshögskolan
ISSN:0039-3150
Language:English
Publication Type:Report
Full Text Status:Public
Subjects:Obsolete subject words > FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING > Plant production
Obsolete subject words > FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING > Plant production > Forestry
Keywords:genecological investigations , annual rhythm, Pinus silvestris, Pinus contorta
URN:NBN:urn:nbn:se:slu:epsilon-9-117
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-9-117
ID Code:5809
Department:Predecessors to SLU > Royal School of Forestry
Deposited By: Skogsbiblioteket Umeå
Deposited On:04 Mar 2011 00:00
Metadata Last Modified:01 Dec 2015 15:07

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