Abstract

The results of a study of the dynamics of elements of seed productivity amphimict Hierochloe repens (Host) Beauv. (2n = 28) and the optional apomict Hierochloe odorata (L.) Beauv. (2n = 42) (Poaceae) are presented. The plants were grown in the absence of competition and in single-species artificial cenoses with low (5 plants/m²) and high (20 plants/m²) starting density. It is found that, according to the classification of ecological strategies, the plants are K-species and the expenses of reproduction are 1.8–5.8% of the biomass of a specimen. The reproductive capacity of 2-year cenoses depend on the starting density of plants. In low-density cenoses, plants have 2.4–2.7 times fewer generative shoots when compared to high-density cenoses. The influence of species features (F₁) on fruiting abundance varies with age. At 2-year coenosis, the share of the influence of this factor on the number of generative shoots per unit area is 43.11% (F₁ = 16.12%), at 3-year coenosis 60.04% (F₁ = 31.26%), and at 4-year coenosis 29.19% (F₁ = 7.24%; F₀₅ = 4.49; F₀₁ = 8.53). The intrapopulation correlation of reproduction indices with the dimension indices of specimens, expressed through the weight and share of organ weight from the biomass of specimens, is clarified. The real seed productivity of H. repens plants was 2.2 times higher in specimens and 1.4 times higher in cenoses compared to H. odorata. Reproductive imbalance in H. odorata was associated with polyploidy and the possibility of apomixis.

中文翻译：

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香Hi的繁殖潜力评估 和H. repens（主持人）Beauv。（禾本科）在不同的组织级别

摘要

种子生产力两性类Hierochloe repens（寄主）Beauv的动力学研究结果。（2 n = 28）和可选的无融合生殖Hierochloe odorata（L.）Beauv。（2 n = 42）（禾本科）。这些植物在没有竞争的情况下生长，并在单种人工普ose中生长，低（5株/ m ²）和高（20株/ m ^2））起始密度。研究发现，根据生态策略的分类，植物是钾物种，繁殖费用占标本生物量的1.8-5.8％。2年普查的繁殖能力取决于植物的起始密度。在低密度的人口普查中，植物的发芽比高密度的人口普查少2.4-2.7倍。物种特征（F ₁）对结实丰度的影响随年龄而变化。在2年期变龄期中，此因素对单位面积产芽数的影响份额为43.11％（F ₁ = 16.12％），在3年期变龄期60.04％（F ₁ = 31.26％），并且在4年的肾衰中29.19％（F ₁ = 7.24％; F ₀₅ = 4.49; F₀₁ = 8.53）。阐明了繁殖指数与样本尺寸指数的种群内相关性，通过样本生物量的重量和器官重量的份额来表示。真正的种子生产力H.三叶植株高出2.2倍，标本和更高的1.4倍cenoses相比H.飞机草。香H的生殖失衡与多倍体和无融合生殖的可能性有关。