Actually, I am trying some culture mediums adding different concentrations of PEG, simulating different osmotic potentials. The objective is to evaluate germination and growth on primed seeds in vitro but I have problems with the culture medium. When I made the medium it did not solidify. The WP was added to the PEG solution, the pH was adjusted, and the agar was added prior to autoclaving at 121 °C for 20 min.