The effect of temperature during short-day (SD) dormancy induction was examined in three boreal tree species in a controlled environment. Saplings of Betula pendula Roth, B. pubescens Ehrh. and Alnus glutinosa (L.) Moench. were exposed to 5 weeks of 10-h SD induction at 9, 15 and 21 degrees C
Dormancy release and thermal time to budburst as affected by duration of chilling outdoors, followed by different flushing temperatures and daylengths in a phytotron, were studied in cuttings of several northern tree species. In Betula pubescens, B. pendula and Prunus padus vegetative buds were
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