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This article presents results on the seed productivity of populations of Tulipa gesneriana L. in the Ergeninskaya Upland (within the boundaries of the Republic of Kalmykia). This species is listed in the Red Data Books of several regions of Russia, including Kalmykia. The research objects were 4 populations of T. gesneriana growing on the Ergeninskaya Upland, which extends across the Republic territory from north to southwest on light chestnut soils of solonetzicity. The potential seed productivity of these T. gesneriana plants was 161.8-181.5 pcs. seeds per plant; the actual seed productivity was 161.8-181.5 pcs. seeds per plant; and the formation of seeds was 34.4-75.6%. All indicators of seed productivity showed significant interpopulation differences when moving from the northern part of the Upland to its southern part. A potential reserve of mature seeds per 1 meter2 , formed during the growing season, in the coenopopulations of T. gesneriana was 253.2 - 3212.8 pcs. in 2018 and 368.0 - 1121.2 pcs. in 2017 on the Ergeninskaya Upland. Keywords: Tulipa gesneriana, coenopopulation, seed productivity, seed reserve

kne life sciences

Seed Productivity of Coenopopulations of Tulipa Gesneriana L. (Liliaceae) on the Ergeninskaya Upland (Within the Boundaries of the Republic of Kalmykia)