Table 2.
Mean dry matter (DM) weight, nonstructural carbohydrate (NSC) concentration and its amount in the leaf sheaths plus stems, and leaf area index (LAI) at heading as affected by different CO2 concentrations and genotypes averaged for two years (2012 and 2013).
| CO2 concentration | Genotype | DM weight (g m−2) | Stem DM weight (g m−2) | NSC concentration (g kg−1) | NSC amount (g m−2) | LAI |
|---|---|---|---|---|---|---|
| CO2 concentration (C) | ||||||
| FACE | 1152 | 713 | 370 | 264 | 4.33 | |
| Ambient | 1038 | 609 | 332 | 203 | 4.67 | |
| Genotype (G) | ||||||
| Koshihikari | 1069 | 674 | 366 | 248 | 4.37 | |
| CSSL-GN1 | 1093 | 643 | 335 | 217 | 4.60 | |
| NIL-APO1 | 1124 | 666 | 351 | 235 | 4.53 | |
| C × G | ||||||
| FACE | Koshihikari | 1127 | 731 | 380 | 277 | 4.12 |
| CSSL-GN1 | 1151 | 694 | 359 | 250 | 4.48 | |
| NIL-APO1 | 1179 | 714 | 371 | 265 | 4.40 | |
| Ambient | Koshihikari | 1011 | 617 | 353 | 219 | 4.62 |
| CSSL-GN1 | 1036 | 591 | 312 | 185 | 4.73 | |
| NIL-APO1 | 1069 | 619 | 332 | 205 | 4.66 | |
| ANOVA | ||||||
| CO2 concentration (C) | * | ** | * | ** | NS | |
| Genotype (G) | NS† | NS | NS | NS | NS | |
| C × G | NS | NS | NS | NS | NS | |
*Significant at P < 0.05. **Significant at P < 0.01. †Not significant at P < 0.10.