In the micropropagation of difficult-to-root plants, low rates rooting cause high economic losses. The local apple (Malus domestica Borkh.) cultivar #67, which is highly resistant to fire blight disease, has been shown have success. Nanoparticles loaded with auxins could increase success their physicochemical properties. To percentage, effects zinc oxide nanoparticles (nZnO), nZnO indole-3-acet...