Figure 4

Interactive effect of temperature and water potential on (a) Radicle Length, (b) Plumule Length, (c) Time to 50% Germination and (d) Coefficient of Velocity of Germination 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.