Study on Environmental Conditions of Seed
Germination and Seedling Growth of Invasive
Plant &lt;i&gt;Amaranthus palmeri&lt;/i&gt; S. Watson

Han, Haixia; Li, Xueying; Wang, Tongtong; Shi, Fuchen

doi:10.15244/pjoes/139378

Cited by 2 publications

(3 citation statements)

References 26 publications

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“…For example, invasive canarygrass (Phalaris arundinacea L.) seeds displayed positive photoblastism to light quality (photon irradiance: white and red light) and quantity (no germination in the absence of light) but were light indifferent to photoperiod (Lindig-Cisneros and Zedler 2001). Thus, while our results suggest O. undulatifolius may be insensitive to light quantity across our experimental light levels, other attributes of light known to promote germination in some species, such as absorption of red light or photoperiod regimes, could be more important cues to break dormancy or release nondormant seeds from quiescence (Baskin and Baskin 1998;Baskin and Baskin 2004;Bhatt et al 2020;Han et al 2022;Mathews 2006). Likewise, other abiotic factors known to influence germination, such as temperature and salinity, may also act as potential environmental filters constraining the establishment of O. undulatifolius in the invaded range at the seed stage (Bangle et al 2008;El-Keblawy and Al-Rawai 2005;Ottavini et al 2019;Tinoco-Ojanguren et al 2016).…”

Section: Resultsmentioning

confidence: 78%

Seed longevity and germination of the emerging invasive species wavyleaf basketgrass (Oplismenus undulatifolius) under varied light regimes

Pham,

2023

Invasive plant sci. manag.

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Invasive non-indigenous species pose a serious threat to native biodiversity and ecosystem functioning. Understanding how species performance varies under conditions in the current and invaded range can help to predict dynamics of the invading species in its new environment. Plants with the ability to alter growth in response to variation in light conditions may be favored in landscapes that experience frequent disturbance, as these species may be able to exploit a wide range of niches. Seed bank persistence may also play a critical role in successful plant invasion, as extended seed viability may increase the chance of outlasting unfavorable conditions, maintain population genetic diversity, and allow re-invasions. This study investigated seed longevity and the effect of light intensity on germination of wavyleaf basketgrass [Oplismenus undulatifolius (Ard.) P. Beauv], a newly established invasive species in US mid-Atlantic forest understories. Oplismenus undulatifolius seeds were collected across five years from the original site of introduction in Maryland USA and stored in standard lab conditions, then subjected to germination trials under four light conditions in a controlled growth chamber. Seeds remained viable for at least nine years, and light intensity did not significantly impact seed germination. Our study demonstrates the importance of evaluating environmental and temporal effects on germination traits, since the scope of surveillance in the field may need to be expanded based on new information about environmental tolerance. Long-term monitoring may also be necessary to effectively control invasive plant populations capable of forming a persistent seed bank.

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Section: Resultsmentioning

confidence: 78%

Seed longevity and germination of the emerging invasive species wavyleaf basketgrass (Oplismenus undulatifolius) under varied light regimes

Pham,

2023

Invasive plant sci. manag.

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“…Besides, the correlation between leaf N mass and P mass of female plants and most indexes was stronger than that of male plants. Successful invasive species in nutrient-rich environments usually have low leaf C/N nutrient [17] and high leaf N/P [40] in their tissues, but the effect of leaf N/P on the success of invasive plants is still unclear. We speculated that the resource allocation and utilization efficiency of the male and female plants of A. palmeri may be greatly affected by the site environment, and in different invasion environments, A. palmeri may have different ecological response strategies, which can adapt to the habitats to achieve a successful invasion.…”

Section: Notesmentioning

confidence: 99%

“…In recent years, it has been reported in Beijing, Tianjin, Shandong, Jiangsu and other regions. A. palmeri grows rapidly, has strong adaptability and high reproduction ability, which can grow on farmlands [17], garbage dumps, roadsides [18], abandoned lands, in deserts [19] and river beds [20]. Moreover, A. palmeri has evolved resistance to multiple herbicidal modes of action [21], which poses a great threat to agricultural production and biodiversity protection in invaded areas.…”

Section: Introductionmentioning

confidence: 99%

Leaf Morphology and Ecological Stoichiometry of C, N and P in Dioecious Invasive <i>Amaranthus palmeri</i>

Li¹,

Zhang²,

Wang³

et al. 2022

Pol. J. Environ. Stud.

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Amaranthus palmeri is a dioecious invasive weed, which poses a great threat to agricultural production and biodiversity protection in China. Although many studies have explored the invasiveness of invasive alien plant species from the perspective of resource utilization efficiency, surprisingly few studies have investigated the sex-related traits in invasive alien plant species. In our study, four different types of A. palmeri were selected to investigated the leaf morphology, allometric growth patterns and ecological stoichiometry of carbon (C), nitrogen (N) and phosphorus (P) between male and female, which typical invaded regions in Jizhou District (JZ), Baodi District (BD), Xiqing District (XQ) and Jinghai District (JH) in Tianjin. Results demonstrated that the leaf width (LW), leaf length (LL), leaf area (LA) and specific leaf area (SLA) of the male plant were generally significantly higher than those of the female plants. Compared with the female plants, the straits of the male plants were closely sex-related and had an allometric growth relationship. The leaf N content (N mass ) and P content (P mass ) of A. palmeri were higher than the average of Chinese terrestrial plants, while the leaf carbon-nitrogen ratio (C/N) and carbon-phosphorus ratio (C/P) of A. palmeri were lower than the average of global terrestrial plants. It is concluded that A. palmeri may have different ecological response strategies, which can adapt to the habitats to achieve a successful invasion by optimizing the resource allocation and utilization efficiency between male and female plants.

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Study on Environmental Conditions of Seed Germination and Seedling Growth of Invasive Plant <i>Amaranthus palmeri</i> S. Watson

Cited by 2 publications

References 26 publications

Seed longevity and germination of the emerging invasive species wavyleaf basketgrass (Oplismenus undulatifolius) under varied light regimes

Seed longevity and germination of the emerging invasive species wavyleaf basketgrass (Oplismenus undulatifolius) under varied light regimes

Leaf Morphology and Ecological Stoichiometry of C, N and P in Dioecious Invasive <i>Amaranthus palmeri</i>

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