Clonal integration can benefit the performance and fitness of clonal plants in heterogeneous environments. Although trade-offs of sexual and asexual reproduction are key life-history strategies to assess the plant fitness and adaptive abilities, the effects of clonal integration on these is less studied. In this study, a pot experiment was conducted to test how reproductive strategies were affected by clonal integration of clonal plant species growing in heterogeneous saline-alkali soils. The results showed that clonal integration had no significant effect on total biomass of whole clone of . The total biomass of younger ramets was higher (+32.8%, < 0.001) under integration condition, while at the cost of the older ramets (-21.7%, < 0.001). Moreover, the ratio of ear biomass to clonal growth organs (CGO) biomass was slightly reduced by 31.7% ( = 0.09). For younger ramets, clonal integration enhances biomass allocation towards CGO, while reducing allocation towards ear growth, and the ratio of ear/CGO biomass was significantly reduced by 39.1% ( < 0.01). Results indicated that clonal integration reduced the ratio of ear to clonal growth organ biomass of whole clone, and more biomass was allocated to younger ramets for spatial expansion. Clonal integration influenced reproductive strategies of , while its impact is not depended on nutrient levels or defoliation interference. The study emphasized the significance of clonal integration in promoting the growth of offspring ramets and, consequently, enhancing their abilities to expand rapidly. It could enhance the spatial expansion of on a site scale and provide high potential for restoration of patchy degraded grassland where it is dominant.

中文翻译：

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无论压力/干扰强度如何，克隆整合都会减少异质环境中羊草克隆的有性繁殖

克隆整合有利于克隆植物在异质环境中的性能和适应性。尽管有性繁殖和无性繁殖的权衡是评估植物适应性和适应能力的关键生活史策略，但克隆整合对这些的影响研究较少。在这项研究中，进行了盆栽实验，以测试在异质盐碱土壤中生长的克隆植物物种的克隆整合如何影响繁殖策略。结果表明，克隆整合对整个无性系的总生物量没有显着影响。在整合条件下，较年轻的分株的总生物量较高（+32.8%，<0.001），而较老的分株的总生物量较高（-21.7%，<0.001）。此外，穗生物量与克隆生长器官（CGO）生物量的比率略有降低31.7%（=0.09）。对于较年轻的分株，克隆整合增强了对CGO的生物量分配，同时减少了对穗生长的分配，穗/CGO生物量的比率显着降低了39.1%（<0.01）。结果表明，克隆整合降低了整个克隆的穗与克隆生长器官生物量的比率，并且更多的生物量被分配给较年轻的分株以进行空间扩展。克隆整合影响了 的繁殖策略，但其影响并不取决于营养水平或落叶干扰。该研究强调了克隆整合在促进后代分株生长并从而增强其快速扩张能力方面的重要性。它可以增强场地规模的空间扩展，并为恢复其占主导地位的斑片状退化草地提供巨大潜力。