Table 3.
Thermal properties of tuber starch granules from plants exhibiting silencing of GBSS (1041 lines) or overexpressing SBEII (1047 lines)
| Line | T o (°C) | T p (°C) | T c (°C) | Δ H (J g −1 ) |
|---|---|---|---|---|
| WT676 | 54.7 ± 0.7e | 58.1 ± 0.4ef | 61.6 ± 0.0d | 15.4 ± 0.4bcde |
| WT898 | 55.3 ± 0.2e | 58.5 ± 0.1ef | 62.1 ± 0.1d | 15.9 ± 0.2bcde |
| WT903 | 55.4 ± 0.6e | 58.6 ± 0.3ef | 61.6 ± 0.0d | 15.7 ± 0.1bcde |
| EV33-3 | 54.2 ± 0.7cd | 57.7 ± 0.4d | 61.6 ± 0.5d | 15.8 ± 2.7bcde |
| EV33-5 | 55.4 ± 0.6e | 58.7 ± 0.4fg | 62.1 ± 0.1d | 15.0 ± 0.5abcd |
| EV34-33 | 54.9 ± 0.2de | 58.2 ± 0.1de | 61.7 ± 0.0d | 14.9 ± 0.5abc |
| 1041-1 | 59.3 ± 0.1f | 63.1 ± 0.2h | 67.5 ± 0.1f | 18.2 ± 0.1f |
| 1041-3 | 59.6 ± 0.6f | 63.8 ± 0.4i | 68.7 ± 0.3g | 17.2 ± 1.5ef |
| 1041-4 | 53.8 ± 0.5c | 57.8 ± 0.2d | 61.9 ± 0.6d | 16.8 ± 1.7def |
| 1041-16 | 60.0 ± 0.4f | 63.4 ± 0.3hi | 67.9 ± 0.3f | 17.9 ± 0.4f |
| 1047-3 | 55.2 ± 0.3e | 59.1 ± 0.5g | 64.9 ± 1.2e | 16.6 ± 1.5cdef |
| 1047-5 | 53.6 ± 0.8c | 57.0 ± 0.7c | 60.9 ± 0.1c | 14.2 ± 1.6ab |
| 1047-12 | 52.8 ± 0.9b | 55.9 ± 0.5b | 59.1 ± 0.2ab | 13.7 ± 0.5a |
| 1047-15 | 52.3 ± 0.4ab | 55.6 ± 0.2b | 59.2 ± 0.2b | 14.5 ± 0.5ab |
| 1047-17 | 52.0 ± 0.3a | 55.0 ± 0.1a | 58.5 ± 0.2a | 14.6 ± 0.4ab |
| 1047-23 | 53.7 ± 0.2c | 56.7 ± 0.2c | 59.7 ± 0.3b | 15.0 ± 1.3abcd |
WT: wild-type; EV: empty vector. Data are means ± SD (n = 4 biological replicates). Means in the same column not sharing a common letter are significantly different between groups at P = 0.05 as determined by LSD after a one-way ANOVA test.
T o = temperature of onset of gelatinisation peak.
T p = temperature of gelatinisation peak.
T c = temperature of gelatinisation conclusion.
ΔH = gelatinisation enthalpy of starch.