Table 2.
Correlation between the number of days until different leaf development stages and leaf biomass in relation to non-structural carbohydrate (NSC) concentrations in shoots and roots at pre- and post-winter.
| NSC indices | Parameters | Bud swelling | Bud break | Leaf unfolding | Leaf biomass |
|---|---|---|---|---|---|
| Pre-winter | |||||
| Shoots sugar |
Pr(>|t|)
R2 slope |
< 0.001
0.482 -1.383 |
0.003
0.266 -1.569 |
0.004
0.254 -1.630 |
0.039
0.134 -2.951 |
| Shoots starch |
Pr(>|t|)
R2 slope |
< 0.001
0.343 0.986 |
0.015
0.188 0.128 |
0.040
0.138 1.027 |
0.035
0.139 2.540 |
| Roots sugar |
Pr(>|t|)
R2 slope |
0.005
0.233 -0.530 |
0.011
0.205 -0.748 |
0.035
0.144 -0.668 |
0.025
0.157 -1.761 |
| Roots starch |
Pr(>|t|)
R2 slope |
0.013
0.190 0.164 |
0.066 0.112 |
0.255 0.044 |
0.377 0.026 |
| Post-winter | |||||
| Shoots sugar |
Pr(>|t|)
R2 slope |
0.055 0.117 |
0.206 0.054 |
0.039
0.139 2.209 |
0.480 0.017 |
| Shoots starch |
Pr(>|t|)
R2 slope |
0.608 0.009 |
0.555 0.012 |
0.518 0.015 |
0.351 0.029 |
| Roots sugar |
Pr(>|t|)
R2 slope |
0.486 0.016 |
0.592 0.010 |
0.939 < 0.001 |
0.305 0.035 |
| Roots starch |
Pr(>|t|)
R2 slope |
0.038
0.136 0.097 |
0.289 0.039 |
0.223 0.051 |
0.665 0.006 |
-1 * DOY was used, thus positive and negative slope indicate a promotion or delay, respectively, of phenology with higher NSC. Slope of regression line is given if Pr < 0.05 (which is shown in bold).