干旱胁迫下褪黑素与纳米氧化锌对棉花生长的生理影响

Objective] To clarify the effects of melatonin (MT) and nano zinc oxide (n-ZnO) on the growth of cotton under drought stress, and to explore ways to alleviate drought stress and reduce the damage of drought stress on the growth and development of cotton, which is of great practical value and significance. [Methods] In this study, an indoor pot experiment was carried out with the cotton variety "JINONGDAI Cotton 24" as the test material, and melatonin and zinc oxide nanoparticles were applied to the cotton under drought stress to study and analyze the physiological condition of the cotton. Results] During the three replicated experiments, the combined application of MT and n-ZnO had the best mitigation effect on cotton under drought stress with the highest D value of 0.7390 in the comprehensive analysis of the affiliation function [Conclusion] From the comprehensive point of view, the spraying of MT and n-ZnO played a positive mitigating role in the suppression of cotton growth by drought stress, and promoted the growth and development of cotton.