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The article presents the seed productivity of five cultivars of  Poa pratensis L . for lawn purposes and three wild-growing specimens of  Poa pratensis L . and  Poa angustifolia L . from natural populations in the south-east of Kazakhstan and in the south-west of Siberia, summarized over three years. The onset of the main phenological phases was determined, taking into account the weather conditions of the region where the experiment was held, and a comparative analysis between the samples was carried out. The correlation connection between three signs of the reproductive sphere and their consistency with weather conditions was researched. For all varieties, a significant conjunction was revealed between the number and weight of seeds per spike, a considerable variation in the coefficient of seed production over the years. The best indicators of seed productivity were noted in the plant variety ‘Novosibirskiy’ and wild forms ‘C-2’ and ‘D1-78’ in Western Siberia, in the plant variety ‘Balin’ and wild specimen ‘K-0027’ in Kazakhstan. The influence of environmental conditions on the organogenic process of  P. pratensis  was revealed. Additional moisture contributes to the manifestation of the potential capability for seed reproduction of the researched samples of  P. pratensis .

Reproductive ability of Poa pratensis L. and P. angustifolia L. in conditions of Kazakhstan and Western Siberia