Table 1. Detected amino acids in N. vitis in different nitrogen sources.
Values are means of three replications ± standard deviation.
| Asparagine | Glutamine | Serine | Histidine | Arginine | Tyrosine | Methionine | Phenylalanine | Isoleucine | Leucine | Total content | |
|---|---|---|---|---|---|---|---|---|---|---|---|
| μg gFw-1 | |||||||||||
| Control | 2.0 ± 0.1 d | 5.4 ± 0.1 b | 2.1 ± 0.1 b | 24.0 ± 1.6 d | 0.3 ± 0.1 d | 0.01 ± 0.01 f | 0.7 ± 0.1 c | 0.3 ± 0.01 d | V.L | V.L | 33.80 ± 1.4 d |
| KNO 3 | 7.0 ± 0.3 a | 2.6 ± 0.1 c | 0.1 ± 0.01 d | 55.8 ± 2.8 b | 0.9 ± 0.2 b | 0.7 ± 0.03 a | 2.9 ± 0.1 b | 4.9 ± 0.14 a | V.L | V.L | 74.04 ± 2.04 b |
| NaNO 3 | 2.7 ± 0.3 c | 6.4 ± 0.1 a | 0.3 ± 0.02 c | 56.4 ± 2.9 b | 0.1 ± 0.01 f | 0.06 ± 0 e | 0.3 ± 0.03 de | 0.6 ± 0.01 c | V.L | V.L | 66.75 ± 2.99 c |
| Urea | 1.1 ± 0.1 d | 1.4 ± 0.1 d | 0.08 ± 0.01 e | 29.1 ± 1.5 c | 1.25 ± 0.2 a | 0.3 ± 0.02 c | 0.5 ± 0.03 c | 0.4 ± 0.03 cd | V.L | V.L | 34.10 ± 2.66 d |
| (NH 4 ) 2 PO 4 | 0.6 ± 0.02 e | 1.1 ± 0.1 e | 3.8 ± 0.1 a | 0.45 ± 0.02 e | 0.4 ± 0.04 c | 0.45 ± 0.03 b | 4.1 ± 0.25 a | 4.0 ± 0.3 b | V.L | V.L | 14.90 ± 1.35 e |
| (NH 4 ) 2 SO 3 | 3.1 ± 0.2 b | 6.4 ± 0.1 a | 0.3 ± 0.04 c | 72.90 ± 3.5 a | 0.2 ± 0.03 e | 0.2 ± 0.03 d | 0.3 ± 0.02 e | 0.4 ± 0.03 d | V.L | V.L | 83.80 ± 3.8 a |
Different letters show the significant difference with p ≤ 0.05 based on Duncan’s analyses. Means followed by the same letter in each column are not significantly different. VL: very low, the content less than 0.1 μg gFW-1