Germination ecology of giant chickweed (<i>Myosoton aquaticum</i>)

Wang, Hengzhi; Wang, Lipeng; Bai, Siqi; Guo, Wenlei; Liu, Weitang

doi:10.1017/wsc.2020.55

Cited by 3 publications

(1 citation statement)

References 44 publications

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“…Hairy Vetch was found to have inhibitory effects on the growth of harmful weeds due to its strong ability to compete for light, moisture, nutrients, etc., which is based on the release of the allelochemical, cyanamide [ 22 , 82 ]. Additionally, recent research also found that Hairy Vetch is more tolerant and sensitive to osmotic pressure in plantations than many plant species including Capsella bursa-pastoris , Myriophyllum aquaticum, and Avena fatua [ 83 , 84 , 85 , 86 ]. The last among the selected species was Brassica napus L., commonly known as Canola and or Rapeseed, which belongs to the Brassicaceae family.…”

Section: Resultsmentioning

confidence: 99%

Influence of β-Ionone in the Phytotoxicity of the Rhizome of Iris pallida Lam

Sothearith,

Appiah,

Sophea

et al. 2024

Plants

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Iris pallida Lam., also known as Sweetie Iris, is a perennial ornamental and medicinal plant that produces a wide range of secondary metabolites. The Sweetie Iris was recently reported to have high allelopathic properties with the potential to be explored in sustainable weed management. This study aimed to identify and evaluate the contributions of compounds involved in the inhibitory effects of the rhizome of Sweetie Iris. High-performance liquid chromatography (HPLC) analysis was used to determine the content of β-ionone in the rhizome of Sweetie Iris. The phytotoxicity of β-ionone was evaluated on lettuce (Lactuca sativa L.) and other test plants. The content of β-ionone in the crude extract of Sweetie Iris rhizome was found to be 20.0 mg g−1 by HPLC analysis. The phytotoxicity bioassay showed that β-ionone had strong inhibitory activity on the growth of lettuce (Lactuca sativa L.) and the other test plants, including Taraxacum officinale, Stellaria media, Eleusine indica, Amaranthus hybridus, Vicia villosa, and Brassica napus. At a concentration of 23.0 µg mL−1, β-ionone inhibited the growth of all test plant species treated. Therefore, β-ionone is an active compound among the other allelopathic substances contained in the rhizome of Sweetie Iris.

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Section: Resultsmentioning

confidence: 99%

Influence of β-Ionone in the Phytotoxicity of the Rhizome of Iris pallida Lam

Sothearith,

Appiah,

Sophea

et al. 2024

Plants

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Germination Ecology of African Lovegrass (Eragrostis curvula) and Herbicide Options for Its Control

Alagbo

Chauhan

2023

Agriculture

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African lovegrass (Eragrostis curvula) is one of the invasive perennial grasses that continues to disturb natural ecosystems globally. Experiments were conducted in southeast Queensland, Australia, to evaluate the effects of temperature, salt stress, water stress, burial depth, and sorghum crop residue load on the emergence and efficacy of postemergence herbicides on two populations (Clifton and Crows Nest) of E. curvula. The optimal germination temperature regimes for E. curvula were 30/20 and 35/25 °C, but seeds did not germinate at temperatures commonly occurring in the Queensland winter (15/5 °C). Total darkness inhibited germination by 79%, indicating that the shade cover effect would reduce germination of E. curvula. The Clifton population tolerated a higher concentration of sodium chloride (160 mM) and osmotic potential (−0.8 MPa). Under both salt and water stress, germination was 31% and 20% greater in the Clifton population than in Crows Nest, respectively, suggesting that the Clifton population is more tolerant to salt and drought stress. The maximum germination was obtained for the surface seeds while emergence declined with increased burial depth up to 4 cm. No seedlings emerged from the 8 cm depth. The addition of sorghum residue amounts up to 8 Mg ha−1 to the soil surface inhibited emergence compared to the no-residue treatment, suggesting that retention of heavy cereal residue will further delay or restrict emergence. Several postemergence herbicides were found to be effective in controlling E. curvula at an early stage. Information from this study will further compliment earlier studies on the targeted management of E. curvula populations.

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Seed-Germination Ecology of Vicia villosa Roth, a Cover Crop in Orchards

Yang

Sun²,

Lu³

et al. 2022

Agronomy

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Vicia villosa Roth is an annual cover crop that is widely grown in orchards in China. Information on seed ecology is valuable as it helps famers to plant cover crops and manage other weed species in agricultural practice; however, information on V. villosa seed-germination ecology is limited. Thus, this study investigated the seed germination and seedling emergence of V. villosa under various temperatures, photoperiods, levels of salt stress, pH, levels of osmotic stress, and burial depths. The results showed that the germination values of the V. villosa seeds were greater than 93% at the constant temperature range of 5–30 °C and fluctuating temperatures of 5/15 °C–20/30 °C; in particular, the germination of the seeds peaked 20 °C and 15/25 °C, with germination values of 95% and 94.5%, respectively. Light was not necessary for the V. villosa seeds’ germination. When the pH was in the range of 5–10, the germination values of the V. villosa seeds fluctuated between 85% and 94%, and obvious inhibition of germination was observed at pH = 4, with a germination value of 15%. The Vicia villosa seeds exhibited obvious salt tolerance, and the seed-germination value was still greater than 50% when the salt concentration reached 280 mM. The seeds were relatively sensitive to osmotic stress, and the germination value was lower than 50% when the osmotic potential was −0.5 MPa. In addition, the germination value of the seeds peaked when the seeds were 1–2 cm underneath the ground; in particular, the seeds still germinated and emerged when the seeds were buried in soli at a depth of 10 cm. These results confirmed that V. villosa, as a cover crop, has considerable potential to be planted and grown in orchards in China and, furthermore, that it may contribute to early weed management in fields, supporting the establishment of V. villosa populations.

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Germination ecology of giant chickweed (Myosoton aquaticum)

Cited by 3 publications

References 44 publications

Influence of β-Ionone in the Phytotoxicity of the Rhizome of Iris pallida Lam

Influence of β-Ionone in the Phytotoxicity of the Rhizome of Iris pallida Lam

Germination Ecology of African Lovegrass (Eragrostis curvula) and Herbicide Options for Its Control

Seed-Germination Ecology of Vicia villosa Roth, a Cover Crop in Orchards

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