Phylogenetic relatedness mediates persistence and density of soil seed banks

Soil seed banks can strongly affect survival and expansion of plant populations by spreading mortality risks and distributing genetic diversity through time. Knowledge of the main factors regulating the ability of seeds to persist in the soil beyond the first growing season is however limited. While morphological and physiological seed traits, and the degree of environmental uncertainty are considered important in shaping the seed-banking strategies of plants, global assessments that explicitly account for phylogenetic relatedness are lacking. Using a global seed bank database comprising data for 2350 angiosperms, we examined the extent to which two seed bank properties, i.e., seed bank type (transient vs. persistent) and density of viable seed banks, are determined by phylogenetic relatedness. We then tested phylogenetic correlations between these properties with seed mass and seed dormancy (dormant vs. non-dormant), and the contribution of phylogenetic relatedness relative to that...土壤种子库（soil seed bank）可通过分散死亡风险、随时间传递遗传多样性，对植物种群的存活与扩张产生显著影响。然而，当前学界对调控种子在首个生长季后仍能留存于土壤中的能力的核心影响因素，认知仍较为有限。尽管已有研究指出，种子的形态与生理性状、环境不确定性程度是塑造植物种子库策略的关键因素，但目前仍缺乏明确纳入系统发育相关性考量的全球性评估研究。 本研究依托涵盖2350种被子植物（angiosperms）的全球种子库数据库，分析了系统发育相关性对两类核心种子库属性的影响程度，即种子库类型（短暂型vs持久型）与存活种子库的密度。随后，我们检验了上述属性与种子质量、种子休眠（休眠型vs非休眠型）之间的系统发育相关性，并评估了系统发育相关性相较于……