influenced by genotype, mineral nutrients, plant growth regulators (PGRs), vitamins and
other factors, leading to undesirable and inefficient medium composition. Facing incidence
of different physiological disorders such as callusing, shoot tip necrosis (STN) and
vitrification (Vit) in walnut proliferation, it is necessary to develop prediction models for
identifying the impact of different factors involving in this process. In the present study, three …