3.4.5. Changes in Endogenous JA

Generally, vegetable mulberry JA content displayed a similar trend with ABA content, and the magnitude of change was great at each stage (Figure 3E). The JA content increased obviously over time, reaching a peak during callus formation. ABT-1—1000 mg·L−<sup>1</sup> had the highest JA content at 147.6 ng·g<sup>−</sup>1, 1.7 times that of the control group, laying the foundation for the formation of root primordia and adventitious roots. After callus formation, the JA content presented a sharp decrease, followed by adventitious root formation.
