Table 1 Agronomic characteristics of Koshihikari, Koshihikari esp2, Oonari, and Oonari esp2 lines grown in the Tsukuba field in 2016, 2017, and 2018
| Â | Â | Maxumum tiller number stage | Heading date (day) | Maturation stage | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Year | Line | Plant height (cm) | Leaf color (SPAD) | Leaf width (cm) | No. of tillers (No./plant) | Culm length (cm) | Panicle length (cm) | No. of panicles (No./plant) | Leaf color (SPAD) | Unhulled rice weight (g/plant) | Head brown rice weight (g/plant) | Ratio of head brown rice weight (%) | Polished rice yield (%) | Leaf blast resistance (0–9) | Panicle blast resistance (0–9) | |
2016 | Koshihikari | 73.3 | 40.2 | 11.2 | 13.8 | 8/1 | 93.1 | 20.3 | 9.8 | 29.3 | 30.5 | 25.0 | 100 | 91.9 | 7.8 | 9.0 |
Koshihikari esp2 | 65.5 | 37.9 | 10.1 | 12.0 | 8/3 | 88.7 | 21.9 | 9.9 | 32.2 | 22.0 | 18.3 | 73 | 89.6 | 8.0 | 4.4 | |
Oonari | 72.7 | 35.3 | 11.3 | 15.7 | 8/6 | 74.8 | 24.5 | 8.4 | 28.7 | 34.4 | 30.3 | 121 | 90.0 | 0.0 | – | |
Oonari esp2 | 66.5 | 35.7 | 11.4 | 17.6 | 8/8 | 76.1 | 26.2 | 8.4 | 31.8 | 32.3 | 27.4 | 110 | 90.1 | 0.0 | – | |
EM747 (Taichung 65 esp2) | – | – | – | – | 8/19 | – | – | – | – | 14.2 | 12.1 | 48 | – | 6.2 | 5.3 | |
2017 | Koshihikari | 76.3 | 40.5 | 11.6 | 14.0 | 7/31 | 85.4 | 21.0 | 10.6 | 28.9 | 26.9 | 21.5 | 100 | 90.1 | – | – |
Koshihikari esp2 | 68.7 | 41.2 | 9.4 | 13.4 | 8/2 | 76.8 | 20.4 | 8.8 | 31.1 | 21.8 | 17.7 | 83 | 88.7 | – | – | |
Oonari | 82.2 | 33.5 | 11.2 | 13.4 | 8/7 | 78.6 | 21.8 | 9.0 | 29.9 | 33.2 | 26.0 | 121 | 90.7 | – | – | |
Oonari esp2 | 83.6 | 35.6 | 10.2 | 13.7 | 8/9 | 76.4 | 23.8 | 9.4 | 32.7 | 31.0 | 24.2 | 112 | 89.1 | – | – | |
2018 | Koshihikari | 75.9 | 39.5 | 11.0 | 15.6 | 7/27 | 96.2 | 19.7 | 12.9 | 30.5 | 31.5 | 26.3 | 100 | 90.6 | – | – |
Koshihikari esp2 | 67.7 | 40.3 | 9.2 | 14.6 | 7/31 | 85.4 | 22.3 | 14.7 | 25.1 | 22.9 | 19.6 | 75 | 90.2 | – | – | |
Oonari | 89.2 | 34.9 | 14.6 | 33.2 | 8/3 | 71.5 | 26.2 | 14.2 | 28.9 | 41.3 | 30.4 | 116 | 90.7 | – | – | |
Oonari esp2 | 90.4 | 37.2 | 15.4 | 31.0 | 8/5 | 62.9 | 27.4 | 13.6 | 33.0 | 33.7 | 28.5 | 108 | 88.7 | – | – | |