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The paper presents the results of evaluation of the KASIB-22 nursery soft wheat samples resistance to the main wheat pathogens. The research material was 44 wheat samples obtained from different regions of Russia and Kazakhstan within the framework of the KASIB shuttle breeding program (A.I. Barayev Research and Production Centre for Grain Farming, Omsk State Agrarian University, ICiG SB RAS, Karabalyk AES, Karaganda AES, North-Kazakhstan AES, FSBSI "Omsk ASC", HE SAU of the Northern Trans-Urals, Aktyubinsk AES, Kurgan Research Institute of Agriculture, Pavlodar AES, agrokomplex "Kurgansemena", Samara Research Institute of Agriculture, Chelyabinsk Research Institute of Agriculture). The following breeding lines were identified as highly productive and possessing high and medium resistance to brown rust, powdery mildew and loose smut: Line Pt-311 (Kurgan Research Institute of Agriculture), Lutescens 1462, Lutescens 1486, Line1616ae14 (Samara Research Institute of Agriculture), Lutescens 1356 (ICiG SB RAS). The yield of the selected samples averaged 42.1–51.2 c/ha. Genotypes Novosibirskaya 41, Line 435/12 and Lutescens 1364 are of interest for selection for quality. The gluten content of the nursery genotypes ranged from 24.1 (Line 23/07 in 2022) to 38.0% (variety Astana 2 in 2021), protein ranged from 13.4 (variety Tertia in 2022) to 19.5% (Lutescens 1364 in 2022). Each of the selected lines is of practical value for breeding, and the samples from the KASIB-22 nursery allow to expand the genetic diversity of spring soft wheat by selecting the most resistant forms to local populations of powdery mildew, leaf rust and loose smut pathogens.
Е. В. Агеева (Thu,) studied this question.