Evaluation of the lines of the control nursery of spring soft wheat in arid conditions North of Kazakhstan

Abstract

Relevance. Northern Kazakhstan is a region where the main production of spring soft wheat grain is concentrated. The creation and introduction of new varieties that meet the requirements of modern production are relevant.Methods. The objects of research are 76 breeding lines of spring soft wheat. The experience was laid in the steppe zone of the North Kazakhstan region. The climate is arid, the average annual precipitation is 240–330 mm. The soil is ordinary carbonate heavy loamy chernozem, humus — 4.5–5.0%. Records and observations were carried out according to the Methodology of the state test (2010). The mass of 1000 grains was determined according to GOST 10842-89, the gluten content — according to ST RK 1046-2008, the nature of the grain was determined on a laboratory device Wile 200.Results. The evaluation of the breeding material was carried out in harsh arid conditions according to several economically valuable characteristics: the duration of the growing season, productivity and grain quality. Six most promising lines have been identified for further study in the conditions of Northern Kazakhstan: 433 SP-2/20, 438 SP-2/20, 446 SP-2/20, 448 SP-2/20, 619 SP-2/20, 769 SP-2/20 with a yield of 24.0–27.7 kg/ha, weighing 1000 grains — 37.2–42.8 g, in kind — 771–789 g /l, gluten content — 32.32–36.32%.