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Fig. 2 | Annals of Forest Science

Fig. 2

From: Short-day photoperiods affect expression of genes related to dormancy and freezing tolerance in Norway spruce seedlings

Fig. 2

Daily maximum and minimum greenhouse temperatures from July 15, 2013 to Apr. 10, 2014. Temperature measured 1.6 m above ground. Daily maximum and minimum outdoor temperatures from July 15 to Oct. 28, 2013. Temperature measured 1.3 m above ground. Seedlings grown outdoors were transferred indoors to the same greenhouse as the other seedlings on Oct. 28 for winter storage at minimum temperature of +7 °C. Natural day lengths are indicated in the figure

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Annals of Forest Science

ISSN: 1297-966X