SCREENING OF WINTER SOFT WHEAT SAMPLES IN THE RYAZAN REGION CONDITIONS FOR DROUGHT RESISTANCE

Abstract

Data on the determination of drought resistance in laboratory conditions are presented with a comparison of the results of field studies conducted in 2018-2020 in the fields of the Ryazan branch of the FSBI FNAC VIM. The diagnosis of plants against the background of sucrose revealed a depression in the length of sprouts and their number. The evaluation of the productivity of breeding numbers for drought resistance, compared with the data of the structural analysis of productivity, revealed that all the studied varieties and lines were medium-productive and only one line L 68-18 was highly productive. The maximum average yield (more than 6,0 t/ha) was obtained from promising lines: L 39-17, L 67-18, L 28-16, L 33-09, L 51-09. The assessment of yield, adaptability and a complex of economically valuable traits allowed us to select the most promising breeding lines. The line L 33-09 has been identified, which has the maximum indicators for resistance to modulated laboratory drought, high average yield, genetic flexibility, stability index and indicator of the level and stability of the variety. The selected varieties and lines are actively involved in hybridization to create a new breeding material adapted to the conditions of the region and further targeted selection based on drought resistance and potential productivity.