Seasonal changes in intensity of bud dormancy in loblolly pine seedlings

The terminal buds of six-month-old loblolly pine (Pinus taeda L.) seedlings remained closed for approximately six months, although bud dormancy, as measured by rate of bud break in a standard greenhouse environment, was only exhibited for about one month. The peak of bud dormancy was in December for...

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Veröffentlicht in:Tree physiology 1989-09, Vol.5 (3), p.379-385
Hauptverfasser: Boyer, J.N, South, D.B
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description The terminal buds of six-month-old loblolly pine (Pinus taeda L.) seedlings remained closed for approximately six months, although bud dormancy, as measured by rate of bud break in a standard greenhouse environment, was only exhibited for about one month. The peak of bud dormancy was in December for seedlings grown near Auburn, Alabama. However, the timing and intensity varied with seed source and may have been affected by the warm fall temperatures. Seedlings from the more northern provenances entered dormancy first and reached a deeper state of dormancy than seedlings from southern provenances. The rate of shoot elongation was not consistently related to the rate of bud break.
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language eng
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source Oxford University Press Journals Digital Archive legacy
subjects budbreak
buds
dormancy
growth rate
photoperiod
Pinus taeda
provenance
seasonal variation
seedlings
shoots
temperature
title Seasonal changes in intensity of bud dormancy in loblolly pine seedlings
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