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Table 4 Average values of number of days to stage of bud burst (BB) with standard deviation, for different chilling and photoperiod conditions of Betula pubescens in experiment 1

From: Chilling temperature and photoperiod influence the timing of bud burst in juvenile Betula pubescens Ehrh. and Populus tremulaL. trees

 

Partial chilling

Full chilling

Photoperiod

8 h

12 h

16 h

8 h

12 h

16 h

BB

1st

77.4 ± 9.3

73.6 ± 10.9

63.0 ± 13.6

80.8 ± 2.8

78.2 ± 1.5

76.0 ± 3.5

50 %

90.4 ± 16.5

92.6 ± 10.7

74.5 ± 9.1

84.2 ± 4.6

82.0 ± 1.2

79.4 ± 4.3

100 %

97.0 ± 17.3

107 ± 11.6

80.3 ± 10.9

88.6 ± 7.8

83.8 ± 1.3

84.8 ± 9.7