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. 2020 May 8;11:550. doi: 10.3389/fpls.2020.00550

TABLE A1.

Correlations between daily accumulated sapflux (three age categories) and PPFD in five phenological stages.

Age Phenological stages
Incubation Culm-elongation Branch-development Leafing Established
A1 0.51* 0.45* 0.74** 0.93** 0.87**
A2 0.47* 0.74** 0.86** 0.96** 0.86**
A3 0.25 0.54** 0.65** 0.94** 0.81**

The numbers are R2 of linear fit; * indicates significant correlation and ** very significant.