Relationship between seed germination and invasion of <i>Ambrosia artemisiifolia</i> and <i>A. trifida</i> at different positions

Yan, 刘延 Liu; Hegan, 董合干 Dong; Tong, 刘彤 Liu; Hanyue, 王寒月 Wang; Ruili, 王瑞丽 Wang; Qianqian, 马倩倩 Ma; Wenxuan, 赵文轩 Zhao; Qiuxia, 李秋霞 Li

doi:10.5846/stxb201810302337

Cited by 2 publications

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“…Sufficient seeds were found in the other 37 treatments (Table 1). The seeds' germination rate, in petri dishes, was determined under 3,000 lux light intensity and 12:12 h (light/dark) conditions (20/10)˚C (Liu et al, 2019), from 10 June-18 September in 2018. To keep the filter paper wet, we added water daily to each petri dish.…”

Section: Seed Germination Experiments Of Ssbmentioning

confidence: 99%

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Spatiotemporal variation of common ragweed soil seed bank density in cornfields

et al. 2021

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Common ragweed (CR) (Ambrosia artemisiifolia L.) can reduce agricultural productivity, especially in corn (Zea mays L.) fields. The spatiotemporal variation of the soil seed bank (SSB) of CR is important for understanding the growth potential and control options of this weed. In 2018, we measured SSB density and seed germination characteristics of CR on the margins of cornfields (18 cornfields, each is >1 ha) as well as 2, 5, and 10 m inside the fields from the margin based on the year of CR invasion (2012)(2013)(2014)(2015)(2016)(2017) in the Yili Valley, Xinjiang, China. From 2016-2018, we studied the effect of eradicating CR plants on reducing the SSB density of CR. Along the cornfield margins, 80.5% of the total CR seeds were viable in the 0-to-5-cm soil layer (SL) after 6 yr of invasion; however, fewer were viable at 2, 5 and 10 m (respectively, 49.5, 44.1, and 42.3%) inside the cornfields. Different modes of SSB accumulation led to different distribution characteristics of the SSB. The increase in the SSB in cornfields was driven by large-scale seed production of CR along the margins of cornfields. When there was no new CR seed input for 2 yr (in 2018), the density of the SSB at cornfield margins and 2, 5, and 10 m inside the fields decreased by 90.0, 72.9, 75.4, and 74.6%, respectively. Eradicating CR plants before their seeds mature, and doing so for several years, appears to be an effective strategy for controlling CR. INTRODUCTIONCommon ragweed (CR) (Ambrosia artemisiifolia L.) is an invasive weed pest in Europe,

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Section: Seed Germination Experiments Of Ssbmentioning

confidence: 99%

“…Common ragweed is an annual weed that propagates through seeds and the mass of 100 seeds is 0.24 g (Liu et al, 2019). A small number (4%) of CR seeds can germinate even after perennating for 40 yr in the soil (Bassett & Crompton, 1975;Essl et al, 2015).…”

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confidence: 99%

Spatiotemporal variation of common ragweed soil seed bank density in cornfields

et al. 2021

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“…Each group of seeds was placed in a Petri dish. The germination rate of the seeds was determined at (20/10)°C, 12 hr/12 hr light/ darkness and 3,000 lux light intensity (Liu et al, 2019). An appropriate amount of water was added daily to each Petri dish to keep the filter paper wet.…”

Section: Germination Ratementioning

confidence: 99%

“…The nongerminating seeds in tested dishes were collected, and viability was determined by the 2,3,5 triphenol tetrazolium chloride method (Liu et al, 2019). Viable but nongerminated seeds were classified as dormant.…”

Section: Dormancy Rate and Death Ratementioning

confidence: 99%

Fate of the soil seed bank of giant ragweed and its significance in preventing and controlling its invasion in grasslands

Dong

Liu

et al. 2020

Ecology and Evolution

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Giant ragweed (Ambrosia trifida, L. henceforth referred to as GR), an annual non‐native invasive weed, may cause health problems and can reduce agricultural productivity. Chemical control of GR in grasslands may have irreversible side effects on herbs and livestock. In an attempt to propose a solution to the harmful effects of GR on grasslands, this study explores the fate of its soil seed bank (SSB) and considers the physical control of its SSB reduction. By studying GR distributed in grasslands of the Yili Valley, Xinjiang, China, we measured the spatial and temporal changes in seed density, seed germination, dormancy, and death. We analyzed seed germination, dormancy, and death following different storage periods. The study analyzed population characteristics over time, including seed fate, and examined physical control methods for reducing the SSB density. The SSB of GR occurs in the upper 0–15 cm of soil in grasslands. Seed density in the SSB decreased by 68.1% to 82.01% from the reproductive growth period to the senescence period. More than 98.7% of the seeds were rotten, eaten, germinated, dispersed, or died within one year after being produced. The seed germination rate of the SSB decreased with the number of years after invasion. When stored for 0.5 or 3.5 years, seed germination rates fell by 40%, during which time seed death rate increased by almost 40%. When GR was completely eradicated for two consecutive years, the SSB and population densities decreased by >99%. The vast majority of GR seeds germinated or died within one year; the germination rate decreased significantly if the seeds were stored dry at room temperature for a long time. Newly produced seeds are the main source of seeds in the SSB. Therefore, thoroughly eradicating GR plants for several years before the seeds can mature provides an effective control method in grasslands.

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Relationship between seed germination and invasion of Ambrosia artemisiifolia and A. trifida at different positions

Cited by 2 publications

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Spatiotemporal variation of common ragweed soil seed bank density in cornfields

Spatiotemporal variation of common ragweed soil seed bank density in cornfields

Fate of the soil seed bank of giant ragweed and its significance in preventing and controlling its invasion in grasslands

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