Fig. 6

Content of plant hormones in cotton leaves from the early flowering season to the stage of full bloom. Several plant growth regulator treatments commonly used in cotton fields were sprayed in the field to reveal the effects of different plant growth regulators on cotton phytohormones by detecting the dynamics of the changes in phytohormones among different treatments, and the feasibility of the methodology in this study was also validated. All plant hormones were quantified at fresh weight in this experiment