Fig. 1.

Percentage of imbibed seeds (mean ± s.e.) of (A–F) G. carolinianum and (G–L) G. dissectum at constant temperature and at 20/10 °C after dry storage at different constant temperatures (15–40 °C) for 1 – 5 months. An asterisk indicates a significant difference in imbibition between the two incubation temperatures in each month. Different upper- and lower-case letters indicate a significant difference between different months in imbibition under a constant temperature and under 20/10 °C, respectively (P < 0·05).