Exogenous Phytohormones: Effects on Lettuce Photosynthesis, Antioxidant Response and Growth

Constantly changing environments often negatively affect yield potential. Phytohormone-based biostimulants are known for their ability to control plant development and reduce the influences of negative environmental impacts facilitate more efficient usage resources. The aim this study was evaluate effect phytohormone-based on lettuce (Lactuca sativa L.) antioxidant photosynthetic responses biomass formation. Lettuce grown in a greenhouse with supplemental lighting; 16 h photoperiod maintained. Ten combinations kinetin, indole-3-acetic acid, gibberellic abscisic acid salicylic were applied at 12–13 BBCH. results thereof have shown that combining growth stress phytohormones resulted higher formation; additionally, two or hormones led antagonistic effects reduced rates. Furthermore, application had most positive productivity. perspective offered by work has manipulation hormone concentrations, systems can be controlled, thus enabling quality.