Scoping the Allelopathic Potential of Elsholtzia strobilifera for Managing Himalayan Knotweed Koenigia polystachya, an Invasive Species in Alpine Ecosystems

IF 1 4区 生物学 Q3 PLANT SCIENCES Folia Geobotanica Pub Date : 2024-03-21 DOI:10.1007/s12224-024-09446-9
Sudeep Chandra, Vaishali Chandola, Germani Concenco, Anant Ram Nautiyal, Mohan Chandra Nautiyal, Lakhpat Singh Rawat, Vijay Kant Purohit
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Abstract

The increasing intrusion of weed species into alpine regions is an alarming threat to native floras because their strong and deep root systems cause a scarcity of nutrients to native alpine plant species. Considering the sensitive nature of alpine ecosystems, integrated weed management may be a means of preventing invasive species from going out of control. The present study investigated the allelopathic effect of Elsholtzia strobilifera on the germination and growth characteristics of Himalayan knotweed (Koenigia polystachya, syn. Polygonum polystachyum) under both field and laboratory conditions. The germination of seeds under laboratory conditions was studied by using different dilutions of hydrosol and aqueous extracts derived from E. strobilifera. In our field study, seedlings of K. polystachya were planted together with E. strobilifera in their natural habitat at a nursery. The study indicates that the seed germination and morphological parameters of seedlings were significantly inhibited by different dilutions of hydrosol and extract (reduction by 83–96% and 62–73%, respectively). In field conditions, significant inhibition in the morphological characteristics of K. polystachya was observed when grown in association with E. strobilifera. The results reveal that E. strobilifera has a significant allelopathic effect on K. polystachya. Based on the results of the present study, it can be concluded that growing plants of E. strobilifera around K. polystachya may be a novel approach to curbing the spread of the latter and suppressing the population of this species in ecologically sensitive alpine or other endangered areas.

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探讨 Elsholtzia strobilifera 在管理高山生态系统中的入侵物种喜马拉雅结缕草 Koenigia polystachya 方面的 Allelopathic 潜力
杂草物种越来越多地侵入高寒地区,对本地植物造成了令人担忧的威胁,因为杂草强大而深厚的根系会导致本地高寒植物物种养分匮乏。考虑到高山生态系统的敏感性,综合杂草管理可能是防止入侵物种失控的一种手段。本研究调查了 Elsholtzia strobilifera 在野外和实验室条件下对喜马拉雅结缕草(Koenigia polystachya, syn. Polygonum polystachyum)萌芽和生长特性的等位效应。我们使用不同稀释度的石蒜水溶液和水提取物研究了实验室条件下种子的萌发情况。在我们的实地研究中,K. polystachya 的幼苗与 E. strobilifera 一起种植在苗圃的自然栖息地。研究表明,不同稀释度的水醇和提取物对种子萌发和幼苗形态参数有明显的抑制作用(分别降低 83-96% 和 62-73%)。在田间条件下,当 K. polystachya 与 E. strobilifera 一起生长时,其形态特征受到明显抑制。结果表明,E. strobilifera 对 K. polystachya 有明显的等位异化作用。根据本研究的结果,可以得出结论:在 K. polystachya 周围种植 E. strobilifera 植物可能是一种新方法,可以在生态敏感的高山或其他濒危地区遏制 K. polystachya 的扩散并抑制该物种的数量。
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来源期刊
Folia Geobotanica
Folia Geobotanica 生物-植物科学
CiteScore
2.40
自引率
0.00%
发文量
18
审稿时长
>12 weeks
期刊介绍: The journal Folia Geobotanica publishes articles in vegetation science, plant ecology and plant systematics, including the topics of temporal community patterns, population and ecosystem ecology, and invasion and conservation ecology. Within the field of plant systematics, Folia Geobotanica welcomes papers on systematic and evolutionary botany, including phylogenetic reconstructions, phylogeographic and biogeographic inferences, studies of microevolutionary processes, taxonomic studies, and broader taxonomic revisions.
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