当前位置: X-MOL 学术Flora › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Clonal fragments of stoloniferous invasive plants benefit more from stolon storage than their congeneric native species
Flora ( IF 1.7 ) Pub Date : 2021-06-27 , DOI: 10.1016/j.flora.2021.151877
Linxuan He , Xiao Xiao , Xiaomei Zhang , Yu Jin , Zhihong Pu , Ningfei Leic Xianfeng He , Jinsong Chen

Plants with clonal growth may suffer from great fragmentation risk due to frequent disturbance. Meanwhile, storage capacity of clonal organs (stolon or rhizome) is important for survival and growth of clonal fragments. However, few studies have compared the difference in the regeneration capacity of clonal fragments between invasive clonal plants and congeneric native species. More studies between invasive plants and their congeneric native species are needed to provide insight into traits that contribute to invasiveness. Single-node fragments with stolon internode of different length were used to investigate the effects of stolon storage on survival and growth of three stoloniferous invasive plants (Wedelia trilobata, Alternanthera philoxeroides and Hydrocotyle vulgaris) and their congeneric native species (Wedelia chinensis, Alternanthera sessilis and Hydrocotyle sibthorpioides). Soluble sugar, starch and soluble protein contents of stolon internode per unit length were significantly greater in the three invasive plants than in their congeneric native species. During the experiment, regeneration of clonal fragments was not observed in A. sessilis. With increasing of stolon internode length, accumulative emergence rate of clonal fragments and biomass of their regenerated ramets significantly increased in the other five species. Accumulative emergence rate of clonal fragments and biomass of their regenerated ramets were significantly greater in invasive plant H. vulgaris than in its congeneric native species. A similar pattern was observed in the clonal fragments with stolon internode of long and medium length for Wedelia species pair. In the experiment, regeneration capacity of clonal fragments varied with species and stolon internode length. Clonal fragments of stoloniferous invasive plants benefit more from stolon storage than their congeneric native species. It is suggested that clonal storage may be an important trait for invasiveness of stoloniferous invasive plants. Therefore, intentional fragmentation should be carefully employed to manage stoloniferous invasive plants and avoid the dispersal of generative clonal fragments.



中文翻译:

匍匐茎入侵植物的克隆片段比它们的同类本地物种更能从匍匐茎储存中受益

克隆生长的植物可能会因频繁的干扰而遭受很大的破碎风险。同时,克隆器官(匍匐茎或根茎)的储存能力对于克隆片段的存活和生长很重要。然而,很少有研究比较侵入性克隆植物和同类本地物种之间克隆片段再生能力的差异。需要对入侵植物与其同属本地物种进行更多研究,以深入了解有助于入侵的特征。用不同长度的匍匐茎节间的单节片段研究匍匐茎贮藏对三种匍匐茎入侵植物(Wedelia trilobata、Alternanthera philoxeroidesHydroctyle vulgaris)存活和生长的影响。) 和它们的同类本地物种 ( Wedelia chinensis、Alternanthera sessilisHydrocotyle sibthorpioides )。3种入侵植物单位长度匍匐茎节间可溶性糖、淀粉和可溶性蛋白质含量均显着高于同属原生种。在实验过程中,在A. sessilis 中没有观察到克隆片段的再生。随着匍匐茎节间长度的增加,其他5个物种的克隆片段累积出现率和再生分株生物量均显着增加。入侵植物H. vulgaris的克隆片段累积出现率和再生分株生物量显着增加比在其同类的本地物种中。在Wedelia物种对的长和中等长度的匍匐茎节间的克隆片段中观察到类似的模式。在实验中,克隆片段的再生能力因物种和匍匐茎节间长度而异。匍匐茎入侵植物的克隆片段比它们的同类本地物种从匍匐茎储存中获益更多。这表明克隆贮藏可能是匍匐入侵植物侵入性的重要特征。因此,应谨慎使用故意碎片化来管理匍匐茎入侵植物并避免生殖克隆碎片的扩散。

更新日期:2021-07-02
down
wechat
bug