Table 5.
The effect of the nitrogen level on the boll shell amino acid and soluble protein content of the two Bt cotton cultivars in 2015.
| Cultivar | N rate (kg/ha) | Amino acid content (mg g−1 FW) | Soluble protein content (mg g−1FW) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| 10DAF | 20DAF | 30 DAF | 40 DAF | 10DAF | 20DAF | 30DAF | 40DAF | ||
| SK-1 | 0(CK) | 75.82f | 84.17e | 103.27fg | 112.18e | 7.58a | 11.53a | 13.73a | 15.54a |
| 75 | 81.65e | 87.67e | 106.13f | 116.36de | 6.56c | 9.80b | 13.47a | 14.35b | |
| 150 | 85.36dc | 93.26d | 111.45e | 124.55c | 6.12d | 7.85d | 11.21c | 13.13c | |
| 225 | 94.92b | 107.07b | 125.42c | 132.62b | 5.41f | 6.37f | 10.34d | 11.96d | |
| 300 | 105.90a | 123.08a | 145.31a | 144.96a | 4.82g | 4.87g | 8.72e | 9.96e | |
| SK-3 | 0(CK) | 50.78i | 72.72f | 96.79h | 112.68e | 7.15b | 9.87b | 13.32a | 15.01a |
| 75 | 60.60h | 75.87f | 100.91g | 118.84d | 6.55c | 8.27c | 12.50b | 13.55c | |
| 150 | 67.14g | 89.01de | 106.57f | 124.24c | 6.32cd | 7.73d | 11.23c | 12.46d | |
| 225 | 78.86ef | 97.98c | 118.15d | 134.35b | 5.78e | 7.10e | 9.12e | 9.92e | |
| 300 | 89.37c | 104.07b | 130.92b | 143.95a | 4.87g | 6.11f | 8.24f | 8.56f | |
Symbol SK-1 and SK-3 are cultivar Sikang1 and Sikang3 respectively, CK is Control. DAF is acronym of “days after flowering.” Same letter among treatments within each sampling date represent non-significant difference (LSD test at 0.05 significance level).