Use of morphophysiological markers in intraspecific polymorphism analysis of flax Linum usitatissimum L

In worsen environmental conditions sustainable agriculture and high quality food production rely on crop diversity and adaptiveness that requires the improved estimates of plant parameters. Flax which is among the recognized promising crops is presently rare in the Tyumen region. Our paper shows the most informative morphometric criteria of adaptiveness for several domestic and foreign flax varieties studied under local conditions. The criteria are for the first time improved by a rapid noninvasive method of chlorophyll measurement in leaves with a SPAD 502 optical counter. The purpose of this work was to estimate response of Linum usitatissimum L. genotypes to the environmental factors and to identify signs for use as indicators of adaptability. A total of 20 collection samples of flax of different ecological and geographical origin from Russia (6 samples), Belarus (7 samples), Czechia (2 samples), Ukraine (1 sample), France (1 sample), Canada (1 sample), Australia (1 sample), and Germany (1 sample) were used...