Table VI.
Thermal properties of starch in endosperm of BEI-deficient mutant of rice as measured by differential scanning calorimetry
Four homozygous sbe1 mutant lines, BMF69, BMF70, BMF71 (EM557S), and EMF22; two homozygous wx mutant lines, BMF23-1 and BMF23-2; two homozygous sbe1/wx mutant lines, EMF25 and EMF26; a homozygous ae mutant line, EM529; and a homozygous ae/wx mutant line, AMF24 were used for analyses as well as the wild-type rice cv T65. The values are averages of three replications.
| Genotype | Line | Toa | Tpb | Tcc | DHd |
|---|---|---|---|---|---|
| °C | J g-1 | ||||
| Sbe1Sbe1/WxWx | T65 | 51.5 ± 0.5 | 60.3 ± 0.2 | 68.7 ± 1.3 | 10.3 ± 1.4 |
| sbe1sbe1/WxWx | BMF69 | 45.9 ± 0.6 | 55.2 ± 0.2 | 64.7 ± 1.2 | 10.0 ± 0.4 |
| sbe1sbe1/WxWx | BMF70 | 45.5 ± 0.3 | 55.0 ± 0.3 | 63.9 ± 0.4 | 9.3 ± 0.3 |
| sbe1sbe1/WxWx | BMF71 | 45.1 ± 0.2 | 55.0 ± 0.3 | 63.9 ± 0.9 | 9.2 ± 0.4 |
| sbe1sbe1/WxWx | EMF22 | 45.8 ± 0.3 | 55.4 ± 0.3 | 64.6 ± 0.3 | 8.3 ± 0.5 |
| Sbe1Sbe1/wxwx | BMF23-1 | 51.9 ± 0.8 | 61.3 ± 0.5 | 68.5 ± 0.3 | 13.1 ± 0.5 |
| Sbe1Sbe1/wxwx | BMF23-2 | 53.1 ± 0.4 | 62.9 ± 0.4 | 71.0 ± 0.6 | 15.0 ± 0.4 |
| sbe1sbe1/wxwx | EMF25 | 43.4 ± 0.5 | 54.8 ± 0.3 | 63.7 ± 0.2 | 10.0 ± 0.4 |
| sbe1sbe1/wxwx | EMF26 | 46.4 ± 0.4 | 55.7 ± 0.2 | 65.4 ± 0.8 | 11.3 ± 0.6 |
| aeae/WxWx | EM529 | 64.4 ± 1.1 | 76.0 ± 0.2 | 83.5 ± 0.4 | 8.9 ± 0.6 |
| aeae/wxwx | AMF24 | 70.2 ± 0.3 | 77.6 ± 0.0 | 83.9 ± 0.3 | 11.7 ± 0.4 |
a Onset temperature.
b Peak temperature.
c Conclusion temperature.
d Gelatinization enthalpy of starch.