Figure 5.

(A) Effect of winter progression on bud water content, (B) short-term water uptake into buds and (C) correlation between bud water content and short-term water uptake after 24 h at 20 °C and constant photoperiod forcing condition. Opaque points and error bars represent mean and corresponding standard errors, respectively, while solid lines and shaded areas in (C) represent model predictions and corresponding 0.90 confidence intervals and transparent points represent the underlying raw data. The different sites are illustrated by triangles for Uetliberg (high-elevation site) and circles for Muttenz (low-elevation site). The first day with minimum temperature <0 °C is indicated with dashed lines. The first day with average temperatures <0 °C is indicated with solid lines.