ADAPTIVE POTENTIAL OF PERSPECTIVE LINES AND CULTIVARS OF COVERED OAT BRED IN FASC OF NORTH-EAST
Nine cultivars and lines of covered oats are studied in two ecological points of the Kirov region (Kirov city and settlement Falenki). The purpose of researches was to study cultivars and lines of covered oats on adaptability and stability of productivity in parallel competitive test and to select perspective one for use in production. The index of environment conditions (I) changed in 2018 from a negative indicator in Kirov (-10.50) to positive one (3.86) in Falenki; in 2017 it made respectively 3.39 and 3.26. Perspective lines of the intensive type I-4592 and I-4808 are selected having average productivity of 64.4 and 63.8 c/ha, sympathetic for change of environment conditions in a section of years and ecological points (b<sub>i</sub> = 1.59 and 1.37; S<sub>i</sub><sup>2</sup> = 21.58 and = 9.78). The line I-4808 had productivity 6.0 c/ha higher than the standard, showed higher stress resistance and stability of productivity, than line I-4592 and was transferred to the State test as a cultivar Falenets. Wide range of adaptive opportunities and resistance to stressful factors are noted at the perspective line 2h12o at high average productivity (61.6 c/ha), regression coefficient near to 1 (b<sub>i</sub> = 0.94) and high genetic flexibility (Y<sub>min</sub> + Y<sub>max</sub>)/2 = 60.2 c/ha). Cultivars Sapsan, Medved' and Berber are belong to the semi-intensive genotypes capable to form productivity, stable by years. Significant positive correlations between productivity and genetic flexibility (r = 0.93), between coefficient of regression and indicators of variation (r = 0.90), stability (r = 0.92), and insignificant - from variance of stability (r = 0.09) are established.