Seasonal Changes in the Frost Hardiness of Provenances of Picea sitchensis in Scotland
- 1 October 1982
- journal article
- research article
- Published by Oxford University Press (OUP) in Forestry: An International Journal of Forest Research
- Vol. 55 (2) , 137-153
- https://doi.org/10.1093/forestry/55.2.137
Abstract
Changes in the natural level of frost hardiness of shoots of four provenances of Picea sitchensis were monitored over two growing seasons by detaching shoots from 7 to 10-year-old trees growing in a nursery in Scotland, and subjecting them to freezing temperatures under conditions which simulated night frosts. Six seasonal phases of frost hardiness were identified (Fig. 3). Seasonal changes in hardiness are discussed in relation to changes in shoot growth and environmental factors. The main opportunities for selecting frost hardy genotypes seem to be in the rate of autumn hardening, the time of pre-bud burst dehardening, and the time of bud-burst.This publication has 2 references indexed in Scilit:
- Cold Hardiness of Pine Needles and Apple Bark as Affected by Alteration of Day Length and TemperaturePhysiologia Plantarum, 1978
- Growth and cold hardiness of intervarietal hybrids of douglas-firTheoretical and Applied Genetics, 1977