Fig. 3
From: Provenance variation and seed sourcing for sessile oak (Quercus petraea (Matt.) Liebl.) in France
Linear regression between provenance bud burst score (DEB3, index) at the site of Sillegny (whole sample of provenances) and the mean diurnal temperature range (MDR, in °C) at the origin of provenance. Legend: Vertical dashed line indicates MDR value at the site of Sillegny, black dots correspond to the French provenances. The blue line is the regression line (DEB3 = − 7.48 + 0.85 MDR; p < 10−8). Positive values of DEB3 correspond to early flushing provenances, and negative values to late flushing provenances