Fig. 2.

Percentage of imbibed seeds (mean ± s.e.) of (A–F) G. carolinianum and (G–L) G. dissectum at alternating temperature and at 20/10 °C after dry storage at different alternating temperatures 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 particular alternating temperature and under 20/10 °C, respectively (P < 0·05).