Table 3.
Hydration Treatments | % Normal Seedling for Fresh Seeds | % Normal Seedling for CDd (P75) Seeds | % Normal Seedling for CDd (P50) Seeds | % Normal Seedling for CDd (P25) Seeds |
---|---|---|---|---|
DW | 99.00 ± 1.85 NS | 73.50 ± 9.78 NS | 50.00 ± 10.03 b | 21.00 ± 6.32 b |
CaCl2 | 100.00 ± 0.00 NS | 70.00 ± 8.28 NS | 58.00 ± 11.51 NS | 32.00 ± 11.31 NS |
CaCl2 CW | 100.00 ± 0.00 NS | 74.00 ± 10.03 NS | 67.00 ± 12.42 a | 39.00 ± 11.06 a |
CaMg | 98.50 ± 4.24 NS | 76.50 ± 10.57 NS | 76.50 ± 10.57 a | 40.00 ± 9.56 a |
CaMg CW | 100.00 ± 0.00 NS | 72.50 ± 4.50 NS | 63.00 ± 5.95 NS | 23.00 ± 6.32 NS |
CaMg CW (6.5) | 99.00 ± 1.85 NS | 76.50 ± 5.83 NS | 68.00 ± 10.90 a | 29.00 ± 5.13 NS |
MgCl2 | 99.00 ± 1.85 NS | 83.00 ± 9.50 NS | 68.00 ± 10.90 NS | 28.00 ± 11.11 NS |
MgCl2 CW | 99.50 ± 1.41 NS | 71.00 ± 11.06 NS | 57.00 ± 12.96 NS | 39.00 ± 10.20 a |
NaCl | 98.00 ± 2.20 NS | 76.25 ± 5.06 NS | 50.00 ± 9.07 NS | 24.50 ± 6.57 NS |
NaCl CW | 100.00 ± 0.00 NS | 78.50 ± 6.02 NS | 51.50 ± 11.99 NS | 40.00 ± 14.18 a |
NaCl CW (6.5) | 99.50 ± 1.41 NS | 74.00 ± 6.76 NS | 68.00 ± 10.90 NS | 48.00 ± 15.57 a |
Values represent mean ± SD (4 × n = 25) % normal seedling production of the control (fresh seeds soaked in deionised water [DW] and all the inorganic salt solutions), and CDd (P75, P50 and P25) lettuce seeds exposed to DW and inorganic salt solutions. Values labelled with different letters are significantly different (p < 0.05, ANOVA) when compared across hydration treatments within each controlled deterioration level. Cathodic water, CW; cathodic water adjusted to pH 6.5, CW (6.5); NS: not significantly different from value obtained with DW and therefore not considered in statistical comparisons.