EVALUATION OF MODERN GRAIN SORGHUM VARIETIES FOR GROWING IN THE CONDITIONS OF THE LUGANSK REGION
The article presents the results of the environmental tests of 24 varieties and hybrids of grain sorghum in the experimental field of State Educational Institution of Higher Education of the Lugansk People's Republic "Lugansk State Agrarian University" in different moisture years (2018-2020). The purpose of the study is to provide a comprehensive assessment of the adaptation of the studied grain sorghum varieties of the "Agricultural Research Center "Donskoy" and other breeding centers of Russia, Ukraine and France grown in the ordinary chernozem of the Lugansk region and to identify the best varieties for the practical use. The growing conditions (72.4%) were the main factor influencing the formation of grain sorghum varieties yield. Such varieties as Zernogradskoe 88, Luchistoe, Ataman, Stepnyak, Odessky 205, Lan 59, Rona, Svat, Progress, Friggo, Keiras, Solarius, Fulgus were more productive on average for 2018-2020 (>45.1 c/ha). The intensive varieties (regression coefficient bi >1) were Zernogradskoe 53, Kim, Stepnyak, Odessky 205, Amazonka, Lan 59, Rona, Svat, Progress, Solarius, Fulgus. Such varieties as Khazine 28, Zernogradskoe 53, Ataman, Atlant, Smotrich, and Keiras had low-intensity (bi≈1) and high-plastic genotypes. The extensive varieties (bi<1) were Zernogradskoe 88, Orlovskoe, Velikan, Luchistoe, Zernsta 97, Krymbel, NASH, Friggo. Such varieties as Luchistoe, Khazine 28, Ataman, Zersta 97, Stepnyak, Lan 59, NASH, Friggo had high stability indicators (S2d = 0.43-2.38), and such varieties as Luchistoe, Ataman, Stepnyak, Odessky 205, Lan 59, Svat, Progress, Friggo, Keiras, Solarius, Fulgus showed high adaptive capacity (HAC). Such varieties as Zernogradskoe 88, Orlovskoe, Velikan, Luchistoe, Ataman, Zersta 97, Stepnyak, NASH, Friggo, Keiras had the increased stability index (Isi) (≥70%). According to the indicators, the most adaptive and preferable were the following grain sorghum varieties: Luchistoe, Ataman, Stepnyak, Odessky 205 and hybrid Lan 59, Swat, Progress, Keiras, Solarius, Fulgus.