Fig. 3

Proportion of cortex in the root diameter represented in the root diamter of seedlings derived from seeds (obtained from tree No. 1) stored for 24 months at 3 °C, −3 °C, −10 °C, −20 °C, cryopreserved at −196 °C, or freshly harvested (not stored). Values with the same lower case letter are not significantly different at P < 0.05 (Tukey test). Bars represent mean values across four orders of roots, whiskers represent SE of the mean