SOURCES OF RESISTANCE TO THE MAIN PHYTOPATHOGENS FOR THE CREATION OF NEW VARIETIES OF CORN IN THE CONDITIONS OF THE KHABAROVSK TERRITORY

Abstract

The results of a study on the resistance of corn varieties and hybrids of various origins to Helminthosporium turcicum and fusarium ear blight in the Khabarovsk Territory, conducted in 2020-2024. The intensity of development and the level of resistance were determined by generally accepted methods. The level of development of Helminthosporium turcicum ranged from 14.5-17.9 to 53.9-73.9%. The average level of fusarium ear blight development over the years of research was 5.0% with signs present in 20.0% of plants. To create varieties of corn with high resistance to Helminthosporium turcicum, the following varieties can be included in the selection process: Korn 180, Guran 2, Mira 22, R 7515, R 7460, Vilora, Prokhladnensky 175 SV, ROSS 140 SV, Inunyui 10, Inunyui 14, Inunyui 15. Sources of resistance to fusarium mycoses in the conditions of the region can be the varieties Baikal, Mashuk 171, Taganay, Shikhan, K 150, Bitzr 160 and K 170, and the Chinese varieties Inunyui 10, Inunyui 14 and Inunyui 15. Hybrids of Chinese selection Inunyui 10, Inunyui 14 and Inunyui 15 had complex resistance to the main phytopathogens of corn and increased yield of green mass in the conditions of the region. Hybrids K 170 and Shihan combined high yield and resistance to fusarium ear blight.