Seed production is an important grassland feature, as it affects its persistence and botanical composition, and plays an essential role in complex plant–animal interactions. Species‐rich seed mixtures from grasslands can be utilized for ecological restoration. Previous studies used different methods to characterize seed production and did not consider all the main aspects involved; hence, they did not allow the complete understanding of the seed production. In this study the seed yield of an unfertilized Mesobromion and a fertilized Arrhenatherion meadow were investigated by considering all main reproductive traits and grassland species. In Arrhenatherion, the viable seed production was 24,000 seeds m⁻² year⁻¹, with a viable seed set of 21% (ovule number 115,000 m⁻²). These values were three times higher than those in Mesobromion. This difference was mainly attributed to different fertile shoot densities (758 vs. 358 m⁻² for Arrhenatherion and Mesobromion respectively). Grasses transformed ovules to seeds (38%) more efficiently than forbs (11%). The standing seed yield at the first mowing was 35% and 45% of the produced seeds for Mesobromion and Arrhenatherion respectively. Because of late mowing, which is typical for Mesobromion meadows, the proportion of species found as seed at the first mowing was higher than that in Arrhenatherion. However, because many Mesobromion species were found to be poorly seed‐producing forbs with high spatial and temporal variabilities of seed yield, harvesting of seeds of all species would be more difficult, and a greater effort would be necessary if the collected seeds are to be used in ecological restoration.

中文翻译：

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半天然草原的种子生产：未施肥的直立草丛和施肥的高燕麦草草甸的数量和变异性

种子生产是草原的重要特征，因为它会影响其持久性和植物组成，并在复杂的动植物互动中发挥重要作用。来自草原的物种丰富的种子混合物可用于生态恢复。先前的研究使用不同的方法来表征种子生产，并未考虑所有涉及的主要方面。因此，他们不能完全了解种子生产。在这项研究中，通过考虑所有主要繁殖性状和草地物种，调查了未受精中生蝇草和经施肥的Arrhenatherion草甸的种子产量。在Arrhenatherion，可行的种子产量为24,000种子m - ² 年^-1，具21％的活种子（胚珠数115,000 m ^-2）。这些值是Mesobromion中值的三倍。这种差异主要是由于不同的沃拍摄密度（758对比358米^-2为Arrhenatherion和Mesobromion分别地）。草比胚芽（11％）更有效地将胚珠转化为种子（38％）。在第一割草立起的种子产量是35％，对于产生的种子的45％Mesobromion和Arrhenatherion分别。由于割草较晚，这是中生草地草甸的典型特征，因此在第一次割草时发现为种子的树种比例高于心律不齐。但是，由于发现许多中观淫羊目物种的种子生产能力差，种子产量在空间和时间上具有很大的可变性，因此收获所有物种的种子将更加困难，如果要收集种子，则需要付出更大的努力。用于生态修复。