Abstract: A kit for preparing an imbibition medium in a treatment for priming seeds, including and configured for a combined application of at least two different agents, the agents being chosen from: a) one or more activators of germination of the seeds, the concentration of the or each of the activators in the imbibition medium being 0.01-10 mM, b) one or more agents capable of providing protection to the seeds and/or the plants resulting therefrom, the concentration in the imbibition medium of the or each of the agents being 0.01-10 mM, and c) one or more regulators of the cellular oxidative mechanisms of the seeds.