ECOLOGICAL ADAPTATION OF VARIOUS SOFT WHEAT VARIETIES IN ORENBURG REGION
Objective. Analysis of the indicators of ecological adaptability of spring soft wheat varieties on the basis of the results of the state variety testing on zonation zones in the Orenburg region, as well as field studies in their location on various methods of basic tillage. Materials and methods. The data of the Orenburg region's variety sites for the yields of spring soft wheat varieties for 2007-2016. and data from experiments with varieties of spring soft wheat against a background of plowing, without loosening loosening of autumn plow and a background without autumn processing. Evaluation of the ecological plasticity of varieties according to generally accepted methods. Results. Assessment of varieties of spring soft wheat, taking into account the indices of their plasticity and stability, taking into account the interaction of genotype-environment factors, made it possible to identify their ecological fitness. Conclusion. Cultivation in different soil and climatic zones of the region of the most adapted varieties promotes an increase in yields.