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. 2017 Dec 2;22(12):2126. doi: 10.3390/molecules22122126

Table 2.

Correlation coefficients between nitrate content and enzymes of nitrogen assimilation, pigment content in tobacco.

Parameter NRA/NA GSA/NA Pigment/NA Pn/NA
NO3-N −0.986 ** −0.828 * −0.923 ** −0.970 **
NO3-N/TN −0.989 ** −0.849 * −0.936 ** −0.973 **

NA: Nitrogen application level; NRA/NA: Nitrate reductase activity/Nitrogen application level; GSA/NA: Glutamine synthetase activity/Nitrogen application level; Pn: Photosynthetic rate. Symbols ** and * indicate significant differences at 0.01 and 0.05, respectively.