Find in Library

<i>C. sativa</i> is a valuable oilseed; it has a wide nutritional and technical use. The purpose of this study is a comprehensive study of <i>C. sativa</i> collection accessions in various ecological and geographical conditions to determine the environmental stability parameters. <i>C. sativa</i> All-Russian Institute of Plant Genetic Resources (VIR) collection accessions served as a material source for the study. The study was conducted in four different ecological and geographical regions of the Russian Federation. In the factor structure of the environmental parameters variability two factors are identified covering 94.8% of the variability. The first factor is associated with the precipitation sum (PS) and the temperatures sum (TS) for the vegetation period (68.7%), the second factor is associated with the average daily temperature (TM) for the same period (26.1%). Analysis of the system of correlations between the parameters of stability and plasticity and the value of regression coefficients for meteorological indicators showed that for all the studied features, indicator <i>b</i> closely correlates with regression coefficients for the temperatures sum (TS) and average daily temperature (TM) for the vegetation period. Indicator <i>S_d</i>—with coefficients for the precipitation sum (PS) and average daily precipitation (PM). The result of the study made it possible to identify collection accessions of <i>C. sativa</i> with a high stable adaptability to the contrasting climatic conditions of the studied regions.