Evaluation of Kasib network varieties collection in the conditions of southern forest-steppe of Western Siberia

One of the main breeding directions of soft spring wheat is the creation of varieties with long-term resistance to a number of diseases. The diversity of genetic resources in the creation of varieties allows to create a form with enriched genetic pool and group resistance to several diseases. The research was conducted in 2018 on the experimental field of Omsk state agrarian university in the southern forest-steppe of Western Siberia. The aim of this research is to find a source of resistance to brown rust and other fungal pathogens for wheat breeding. The results of field evaluation of resistance to leaf and stem rust and powdery mildew of 137 samples are presented. Samples were selected from KASIB network nurseries (Kazakhstan-Siberian network for the improvement of wheat), over the period 2000-2017. Phenological observations were carried out during the growing season. Structural analysis of crop elements was performed. Variation in maturation time of soft spring wheat samples was associated with genetic heterogeneity of the parent material and the reaction of a particular variety to the growing conditions...