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Tapani Repo (email)

Rehardening potential of Scots pine seedlings during dehardening.

Repo T. (1991). Rehardening potential of Scots pine seedlings during dehardening. Silva Fennica vol. 25 no. 1 article id 5437. https://doi.org/10.14214/sf.a15591


The ability of one-year old Scots pine (Pinus sylvestris L.) seedlings to reharden during the dehardening period was studied. Naturally hardened quiescent seedlings were preconditioned at 0°C for ten days and then placed in chambers at different forcing temperatures with different light regimes. The forcing periods were followed by cool periods. Changes in frost hardiness were monitored at intervals using freeze tests of whole plants. Frost hardiness was assessed by three methods: impedance, survival and growth retardation. Dehardening seemed to be a partially reversible process, i.e. in some growing conditions slight rehardening was found.

The PDF includes an abstract in Finnish.

Pinus sylvestris; frost resistance; acclimatization; quiescence; impedance

Published in 1991

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Available at https://doi.org/10.14214/sf.a15591 | Download PDF

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