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Table 2 The effect of application of 5 amino acids composition and 21 amino acids composition on flower protease and peptidase activities of the two Bt cotton cultivars at flowering period

From: Amino acids application enhances flowers insecticidal protein content in Bt cotton

Treatment Protease activity in fresh weight /(mg·g− 1·h− 1) Peptidase activity in fresh weight /(μmol·g− 1·h− 1)
2016 2017 2016 2017
S1CK 54.6d 47.5e 170.2d 170.2c
S1A1 74.4bc 75.1bc 245.5c 251.8b
S1A2 76.3b 61.3cd 254.3bc 257.3b
S3CK 69.2cd 55.5de 176.0d 168.0c
S3A1 95.7a 90.0ab 285.0ab 333.9a
S3A2 108.5a 93.8a 323.6a 369.7a
  1. Note: S1 and S2 indicate the conventional Bt cultivar Sikang1 and hybrid Bt cultivar Sikang 3, respectively. A1, A2, CK represent 5 amino acids treatment, 21 amino acids treatment, and the control, respectively. Differences between treatments within the same year labeled by the same letter are statistically not significant (LSD test at 0.05 significance level)