| Summary: | As a result of the experimental studies, results were obtained on the variability of the traits of seed productivity of the narrow-local endemic of Dagestan – Allium charadzeae under various conditions along the altitude gradient. Analysis of the data obtained revealed significant differences in the indicators of seed productivity of individuals. The actual seed productivity is significantly inferior to the potential, which indicates a low degree of realization of the potential for seed formation in mountainous conditions. With an increase in the height above sea level of the experimental plots, the absolute indicators of traits of seed productivity decrease (the number of fruits in the umbrella from 14.9 to 8.5, the number of flowers in the inflorescence from 24.7 to 12.1, the number of seeds in the umbrella from 26.6 up to 19). At the same time, the relative indicators, the percentage of fruit blossoming from 60.5 to 71.2 and the coefficient of seed production from 0.17 to 0.27 increases. As a result of the analysis of variance, a significant influence of the conditions of the year and altitude above sea level on the studied characteristics was revealed.
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