Indicators of adaptability of spring wheat varieties in various cultivation conditions

The study and identification of crop varieties according to the parameters of adaptability and stability in the conditions of their cultivation is an important stage in the introduction of these varieties into the production process. This article presents the results of a study of 6 varieties of spring wheat of the middle early maturity group in three ecologically different zones of the Altai Territory in order to identify their responsiveness and determine possible agrotechnology. The regression coefficient (bi) for all varieties of the group in the conditions of the Priobskaya zone is higher than 1, which makes it possible to classify these varieties as varieties of an extensive type of development. Varieties Altayskaya 99 and Memory Azieva showed regression coefficient values below 1, which allows them to be classified as varieties of intensive type of development.