Many aquatic plants are characterized by clonal growth through which the mother ramet can support offspring ramets by providing resources. The capacities of exploring space, sampling environment and overcoming establishment risks for offspring ramets could be enhanced with the resource support of the mother plant, which may change over time. This study aimed to investigate whether there is a change of clonal integration between mother ramets and offspring ramets in the submerged macrophyte Vallisneria natans with growth time. The stolons between mother ramets and daughter ramets were severed or intact at different growth times (7th day, 17th day, or 27th day after planting). The anatomical structure of the stolons and the morphological, biomass and nitrogen traits of the plants were measured. The results showed that the anatomical structure of the stolon changed significantly over time. The growth and clonal reproduction of daughter ramets were markedly improved by clonal integration on the 14th day but not on the 24th day or 34th day. In addition, there was no significant cost to support daughter ramets in terms of the total biomass of mother ramets. Our results highlight that the growth and clonal reproduction of daughter ramets of V. natans relies on mother ramets in the early stage and support from mother ramets declines with increasing independence of daughter ramets.

许多水生植物的特征是克隆生长，母分株可以通过提供资源来支持后代分株。在母本植物的资源支持下，探索空间，取样环境和克服后代分株的建立风险的能力可以得到增强，这种能力可能会随着时间而改变。这项研究旨在调查淹没的水生植物Vallisneria natans中母分株和后代分株之间的克隆整合是否发生变化随着成长的时间。母分株和子分株之间的脚在不同的生长时间（种植后第7天，第17天或第27天）被切断或保持完整。测量了sto茎的解剖结构以及植物的形态，生物量和氮素特性。结果表明，脚的解剖结构随时间发生了显着变化。子代分株的生长和克隆繁殖在第14天明显提高，而在第24天或第34天则没有。另外，就母分株的总生物量而言，支撑子分株没有显着成本。我们的结果突出表明，纳丹弧菌子代分株的生长和克隆繁殖 在早期阶段就依靠母，随着母support的独立性的提高，母support的支持下降。