Jonsson, Alena and Eriksson, Gösta and Dormling, Ingegerd and Ifver, Jan
(1981).
Studies on frost hardiness of Pinus contorta Dougl. seedlings grown in climate chambers.
Uppsala:
UNSPECIFIED, Sveriges lantbruksuniversitet.
Studia forestalia Suecica
; 157
[Report]
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Abstract
Pinus contorta populations from latitudes 47o to 63'N were cultivated in climate chambers and freeze tested at varying photoperiods. The results were compared with data from field trials comprising other populations from the same latitudinal range. A good agreement between our data on frost hardiness from the climate chambers and the ones front field trials was obtained. Breeding for frost hardiness in Pinus contorta ought to be done by early testing using the design developed in the present investigation. The longer the night length the greater the hardiness. Low temperature during the night promotes the development of hardiness. The more northern the origin the shorter the night length required to induce hardiness. Dry matter content of the upper 3 cm of the shoots and the lengthening of the secondary needles are strongly correlated with hardiness.
| Authors/Creators: | Jonsson, Alena and Eriksson, Gösta and Dormling, Ingegerd and Ifver, Jan |
|---|---|
| Title: | Studies on frost hardiness of Pinus contorta Dougl. seedlings grown in climate chambers |
| Series Name/Journal: | Studia forestalia Suecica |
| Year of publishing : | 1981 |
| Number: | 157 |
| Number of Pages: | 47 |
| Place of Publication: | Uppsala |
| Publisher: | College of Forestry, Swedish University of Agricultural Sciences |
| ISBN for printed version: | 91-38-06093-0 |
| ISSN: | 0039-3150 |
| Language: | English |
| Publication Type: | Report |
| Full Text Status: | Public |
| Subjects: | Obsolete subject words > FORESTRY, AGRICULTURAL SCIENCES and LANDSCAPE PLANNING > Plant production > Plant and forest protection |
| Keywords: | Pinus contorta Dougl., frost hardiness, climate chambers |
| URN:NBN: | urn:nbn:se:slu:epsilon-9-43 |
| Permanent URL: | http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-9-43 |
| ID Code: | 5434 |
| Faculty: | S - Faculty of Forest Sciences |
| Deposited By: | Skogsbiblioteket Umeå |
| Deposited On: | 25 Oct 2010 00:00 |
| Metadata Last Modified: | 07 Dec 2015 10:55 |
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