Germination is a prerequisite of successful establishment in plant communities and is influenced by many factors. Therefore, seeds are under strong selective pressure to sense and integrate information about their environment and modulate germination based on it. In this study, we focus on interspecific seed–seed interactions under optimal and suboptimal conditions to test three hypotheses: (H1) dominant species’ seeds and emerging seedlings are most likely to be recognised by neighbouring seeds and exert a significant effect on the germination of common subordinate species; (H2) taxonomically related species are expected to exert stronger influence than unrelated species on the germination of neighbouring seeds; and (H3) facilitative interactions are more likely to occur under suboptimal conditions (drought stress) in the seed–seed interactions.

中文翻译：

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有影响力的邻居：优势种的种子影响普通草原种的发芽

发芽是在植物群落中成功建立的先决条件，并且受许多因素影响。因此，种子承受着强烈的选择压力，需要感知和整合有关其环境的信息并基于其调节发芽。在这项研究中，我们重点研究了在最佳条件和次优条件下的种间种子-种子相互作用，以检验三个假设：（H1）优势种的种子和发芽幼苗最有可能被邻近种子识别，并且对种子的发芽产生重大影响常见的下属物种；（H2）预计与分类学相关的物种对邻近种子的萌发将产生比不相关的物种更大的影响；（H3）在种子－种子相互作用中，次优条件（干旱胁迫）下更容易发生相互作用。