Assessment of oat genotypes for resistance to frit fly in the conditions of the Kirov region

The oat fly (Oscinella frit L.) is a dangerous pest in crops. Studies on resistance to phytophagus were conducted 2016-2021. stability of 200 promising lines and varieties bred by the Federal Agricultural Research Center Nort-East named N. V. Rudnitsky was evaluated nursery competitive test under natural conditions for development according scale All-Russian Institute Plant Protection, percentage stem damage larvae determined basis "drying central leaf during period "tillering-shooting" trait. best formed 2016. (Ij = 3.0) 2021 г. 2.7), with maximum plant 34 % hulled 22 naked genotypes, respectively. Unfavorable developed 2017 -2.7) 2019. -2.9) – plants did not exceed 3 %. In 2018 2020, index environmental close zero -0.41 0.10, respectively), (L.) 5 studies established an inverse correlation between oats HTC "sowing-tillering" (r -0.73), total -0.30...-0.39) productive bushiness -0.59...-0.77), grain yield -0.20...-0.61). A direct plasticity genotypes 0.88). Lines minimal have been selected: 233h12, 394h12, 251h14, 194h13, 63h11, 21h12o, 153h13, 157h13, 65h11, 72h11. Low noted lines: 178h13, 4h14, 114h12, 4h12, their change significantly from amount (L.). most stable studied trait 2h12o, 4h12 Sapsan, Falenets.