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Home → Publications → National Nursery Proceedings → 1988 → Effect of the Timing of Cold Storage on Cold Hardiness and Root Growth Potential of Douglas-fir

Effect of the Timing of Cold Storage on Cold Hardiness and Root Growth Potential of Douglas-fir

Container grown Douglas fir seedlings were cold acclimated in growth chambers over 20 weeks. At weekly intervals, cold hardiness and root growth potential (RGP) were measured, and additional seedlings were placed in 1?C storage for 4 weeks. Cold hardiness and RGP were reassessed following storage. Cold hardening continued in storage regardless of when during acclimation seedlings were stored. However, the rate of cold acclimation increased or decreased during storage depending on the level of cold hardiness at the start of the storage period. RGP generally declined during storage, though occasionally remained the same or increased without apparent relation to level of cold hardiness.


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Author(s): Karen E. Burr, Richard W. Tinus

Publication: National Nursery Proceedings - 1988

Event: Combined Meeting of the Western Forest Nursery Associations
1988 - Vernon, CAN