The article presents the results of studying 41 cultivars of Hemerocallis × hybrida hort., created in the period from the second half of the 19th century to the 90s of the 20th century, according to some quantitative criteria. Trends have been identified towards the absence of significant changes in the diameter of the flower, a decrease in its width, and an increase in the ratio of these indicators. There is a tendency to decrease the number of flowers on the peduncle in H. × hybrida cultivars created at different stages of breeding. It is shown that in cultivars created over a long chronological period, the number of flowers simultaneously opened on the peduncle varies in a very narrow range: from 1 to 2 pcs. It has been established that prolonged artificial selection leads to a slight change in leaf length.
Kabanov A.V., Mamaeva N.A., Khokhlacheva J.A.
