Frost hardiness of dormantSalixshoots
作者:
HeinrichA. von Fircks,
期刊:
Scandinavian Journal of Forest Research
(Taylor Available online 1992)
卷期:
Volume 7,
issue 1-4
页码: 317-323
ISSN:0282-7581
年代: 1992
DOI:10.1080/02827589209382724
出版商: Taylor & Francis Group
关键词: Salix;willow;cutting;winter hardiness;winter damage;frost resistance;frost tolerance.
数据来源: Taylor
摘要:
The frost hardiness of dormant stem cuttings of cultivatedSalix,representing a range of species and clones, was determined. Plants were subjected to a standardized artificial hardening regime, and frost hardiness was determined using a standardized freezing method. All the cuttings survived exposure to temperatures of at least ‐ 85°C. Freezing tolerance was concluded to be the most important winter survival mechanism for all cultivatedSalixspecies. Primordia in the axillary buds, the secondary cambium and the root initiation cells all tolerated the imposed low‐temperature stress. Field observations, together with the experimental results, suggest that winter damage is because of incomplete winter acclimation rather than inherent inability to develop adequate tolerance to low temperature stress.
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