Table 1.
Correlation coefficients between leaf matter accumulation and nitrogen and carbon metabolism in tobacco.
| Parameter | NRA | GSA | NO3-N | TN | NO3-N/TN | Pigment | Pn |
|---|---|---|---|---|---|---|---|
| Total soluble sugar content | 0.362 | 0.292 | −0.452 | −0.554 | −0.486 | 0.433 | 0.777 |
| Reducing sugar content | −0.119 | −0.086 | −0.805 | −0.879 * | −0.825 * | 0.019 | 0.368 |
| Leaf biomass | 0.631 | 0.796 | 0.226 | 0.014 | 0.201 | 0.822 * | 0.738 |
NRA: Nitrate reductase activity; GSA: Glutamine synthetase activity; TN: Total nitrogen content; Pn: Photosynthetic rate. Symbol * indicates significant differences at 0.05, respectively.