Assessment of Adaptability Parameters of Zoned Pea Varieties

The aim of the research is to determine the parameters of adaptability of zoned pea varieties. The research was carried out at the FSBSI “Agricultural Research Center “Donskoy”, located in the southern zone of the Rostov region. The objects of research are 17 varieties of seed peas included in the State Register of Selection Achievements approved for use in the North Caucasus region of the Russian Federation. The yield of seeds of pea varieties averaged 2.56 t/ha over the years of research. The yield of the standard variety “Aksai Usatiy” 5 was on average 2.49 t/ha. A significant (HCP05 = 0.21 t/ha) excess was observed in the varieties “Boldor” (3.00 t/ha), “Biathlon” (2.84 t/ha), “Cadet” (2.73 t/ha), and “Ataman” (2.71 t/ha). The reaction rates of each of the studied varieties to the formed weather and climatic conditions were different. The maximum seed yield for most varieties was obtained in 2021, for the “Laurel” variety, in 2022. The minimum yield for some varieties was formed in 2019, and for “Ataman”, “Cadet”, and “Gothic” varieties in 2020. Varieties with high seed yield and high level of homeostaticity, such as “Alliance” (2.68 t/ha; Hom = 33.5), “Cadet” (2.73 t/ha; Hom = 21.0), “Gothic” (2.66 t/ha; Hom = 65.4) are recommended for obtaining stable yields in limiting conditions. Varieties with high seed yield, but low level of homeostatic, such as “Aksai Usatiy” 7 (2.59 t/ha; Hom = 6.0), “Ataman” (2.71 t/ha; Hom = 9.4), “Dawn” (2.67 t/ha; Hom = 4.9), “Biathlon” (2.66 t/ha; Hom = 4.1), “Boldor” (3.00 t/ha; Hom = 4.7) are recommended for conditions with a high level of agricultural background.