Table 1.
Tolerance of rice cultivars to high temperature at flowering based on the studies of Matsui et al. (2001)
| Percentage fertility under high temperature | |||||
| Control | |||||
| Cultivar | 35·0/26·0 °C* | 37·5/26·0 °C | 40·0/26·0 °C | Tolerance to high temperature | |
| 1 | Nipponbare | 94·6 | 85·3 | 35·0 | Tolerant |
| 2 | Akitakomachi | 93·4 | 80·0 | 50·3 | Tolerant |
| 3 | Aichinokaori | 96·1 | 78·2 | 19·8 | Moderate |
| 4 | Yumehikari | 91·5 | 74·3 | 22·9 | Moderate |
| 5 | Kinmaze | 95·4 | 65·2 | 22·2 | Moderate |
| 6 | Akihikari | 92·6 | 65·9 | 13·2 | Moderate |
| 7 | Aoinokaze | 91·4 | 58·4 | 19·9 | Moderate |
| 8 | Minamihikari | 92·7 | 45·7 | 19·2 | Susceptible |
| 9 | Hinohikari | 93·4 | 44·1 | 13·7 | Susceptible |
* Day/night temperature