Fig. 1
Morphological study of cotton boll shedding process after S treatment and determination of ROS content. AZ: abscission zone. S0-S5 shows treatment 0d, 1d, 2d, 3d, 4d, 5d, respectively. A,B Paraffin section and Stereoscope to observe effect of S treatment at different times on of abscission zone of cotton boll. C Investigation on the shedding rate of cotton bolls at different time points after S treatment. Statistical significance between different treatment and control groups was tested using T test (*p < 0.05; **p < 0.01), biological replicates n = 3. D,E Changes of H2O2 and O2.− content in cotton bolls treated with S. Statistical significance between different treatment and control groups was tested using T test (*p < 0.05; **p < 0.01), biological replicates n = 6