Figure 2

Interactive effect of temperature and water potential on (a) Germination Index, (b) Germination rate Index, (c) Mean Germination Time and (d) Mean Germination Rate of Helianthus annuus L var. S1-278 using hydrothermal time model. Bars sharing different letter (s) for each parameter are significantly different from each other according to the HSD test (p ≤ 0.05). All the data represented are the average of three replications (n = 3). Error bars represent the standard errors (SE) of three replicates.