Allelopathic effect of Carthamus tinctorius on weeds and crops

Motamedi, Marzieh; Karimmojeni, Hassan; Sini, Fatemeh Ghorbani

doi:10.1590/s0100-83582020380100066

Cited by 3 publications

(4 citation statements)

References 21 publications

(19 reference statements)

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“…The radicle growth of rye-grass was most pronounced than shoot growth under the action of both hybrids extracts (Tables 1 and 2). The fact confirms that radicle growth bioassay is the most reliable to detect the allelopathy promoted by crops (Motamedia et al 2020). The adventitious flora of the plots, at the experimental site, was mainly composed of eight broadleaves: white buttons (Anacyclus clavatus Desf.…”

Section: Resultssupporting

confidence: 66%

Allelopathy and weed control ability of three cover crops residues, in conservation of agriculture

Oueslati,

Yahyaoui,

Hamdi

et al. 2023

Bangladesh J. Bot.

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The weed suppressive potential of three cover crops: two forage hybrids of corn and sorghum and a local population of millet, used in conservation of agriculture was investigated. The allelopathic potential of cover crops was studied based on bio-assays. The effect of three tested crops were used on weed dynamics (weed density, Weed Control Efficiency (WCE). Two types of residues management (TRM) were followed: standing and incorporated residues (SR, IR).Forage residues showed an allelopathic effect on germination and seedlings growth of rye-grass. Sorghum significantly reduced weed density. Incorporated residues method was more effective than standing residues in reducing weed density. Millet residues was more efficient to control weeds whereas corn residues increased weed biomass. Weed Control Efficiency was also influenced by two types of residues management which showed a highly significant interaction with tested crops. Bangladesh J. Bot. 52(3): 845-852, 2023 (September)

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Section: Resultssupporting

confidence: 66%

Allelopathy and weed control ability of three cover crops residues, in conservation of agriculture

Oueslati,

Yahyaoui,

Hamdi

et al. 2023

Bangladesh J. Bot.

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“…Similarly, Kabir et al [ 30 ] observed the allelopathic effects of rice varieties on spinach root and shoot length. Motamedi et al [ 31 ] further showed that Carthamus tinctorius decreased the height of Amaranthus spp. Despite the reduction of shoots and roots, stem diameter was not affected by allelochemicals from woolly cupgrass.…”

Section: Discussionmentioning

confidence: 99%

The Impacts of Woolly Cupgrass on the Antioxidative System and Growth of a Maize Hybrid

Szilágyi

Radócz

Hájos

et al. 2021

Plants

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Woolly cupgrass (Eriochloa villosa (Thunb.) Kunth) is a new invasive weed in Hungary. This study was conducted to elucidate the effects of this weed on the biochemistry and growth of maize (Zea mays L. cv. Armagnac) under greenhouse conditions. Activities of the antioxidative enzymes (ascorbate peroxidase (APX), guaiacol peroxidase (POD), superoxide dismutase (SOD)), the contents of malondialdehyde (MDA), and protein were measured in the shoots and roots, whereas the content of the photosynthetic pigments was measured only in the shoots. The measured growth parameters included plant height, root length, root volume, root and shoot dry weight, and stem diameter. Results showed the allelopathic effects of woolly cupgrass on maize, with significant decreases in plant height, root length, root volume, and root dry weight. Woolly cupgrass infestation (WCI) induced significantly higher activities of APX and SOD in the shoots, whereas POD was only induced in the roots. The contents of chlorophyll-a, total chlorophyll (including relative chlorophyll), carotenoids, and root protein were substantially reduced by WCI, except for the leaf chlorophyll-b. The results suggest that high APX and SOD activities in the shoots could be involved in stabilizing the leaf chlorophyll-b, chlorophyll a/b, shoot protein, and shoot dry weight because all of these parameters were not inhibited when these two enzymes were induced. In contrast, high activity of POD in the roots is not effective in counteracting allelopathy. Therefore, it would be worthwhile to further investigate if an increase in the activities of APX and SOD in the shoots of WCI maize is responsible for stabilizing leaf chlorophyll-b, shoot protein, and shoot dry weight, which could contribute to improved maize yield under WCI.

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“…Plants are sources of allelochemical compounds that contribute to the sustainability of agriculture (Rezendes et al 2020). Consequently, using the allelopathic properties of some plant species as bioherbicides has emerged as a sustainable and eco-friendly method (Motamedi et al 2020). Different weed extracts have been proven to have allelopathic effects (Jmii et al 2020;Raza et al 2021), allowing them to be introduced as inhibitors to delay seed germination and disrupt vegetative and/or reproductive growth (Quintana et al 2008;Motamedi et al 2020).…”

Section: Introductionmentioning

confidence: 99%

“…Consequently, using the allelopathic properties of some plant species as bioherbicides has emerged as a sustainable and eco-friendly method (Motamedi et al 2020). Different weed extracts have been proven to have allelopathic effects (Jmii et al 2020;Raza et al 2021), allowing them to be introduced as inhibitors to delay seed germination and disrupt vegetative and/or reproductive growth (Quintana et al 2008;Motamedi et al 2020). In some cases photosynthesis inhibition is observed, chlorophyll content drops, cell membrane disruption occurs, and enzyme activity is impaired, among other effects (Mousavi et al 2021).…”

Section: Introductionmentioning

confidence: 99%

Green synthesis of Russian knapweed aqueous extract iron oxide nanoparticles and their applications for weed management in wheat

Souha,

Alebrahim,

Feizpoor

et al. 2023

Preprint

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Plant-derived substances are becoming increasingly popular as eco-friendly alternatives to conventional chemical herbicides in crop production. A promising weed control strategy for achieving sustainable agriculture is integrated weed management using bioherbicides, which inhibit the germination and growth of weed seeds. The properties of such bioherbicides have only rarely been studied in vitro. An extract from Russian knapweed (Acroptilon repense L.) is used here to synthesize iron oxide nanoparticles. Biodegradable plant components and other biodegradable waste materials can be utilized in green synthesis to produce nanoparticles. The resulting nanostructures were characterized in terms of magnetic properties, chemical structure, morphology, thermal stability, and crystal structure using a vibrating sample magnetometer (VSM), Fourier-transform infrared spectroscopy (FT-IR), energy dispersive spectroscopy (EDS), transmission electron microscopy (TEM), scanning electron microscopy (SEM), thermogravimetric analysis (TGA), and X-ray diffraction (XRD), respectively. Wild mustard, wild oats, and wheat seedlings were exposed to different concentrations of aerial parts extract of Russian knapweed formulated with iron oxide. Germination percentage, seedling length, and dry weight of both the pure and formulated Russian knapweed extract treated seedlings were decreased trend. Reduced germination of wild mustard (zero), wild oats (zero), and wheat (65%) was achieved after treatment with 20% aqueous extract of Russian knapweed formulated as iron oxide nanoparticles. The results suggest that Russian knapweed extracts formulated with iron oxide can be used as a bioherbicide.

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Allelopathic effect of Carthamus tinctorius on weeds and crops

Cited by 3 publications

References 21 publications

Allelopathy and weed control ability of three cover crops residues, in conservation of agriculture

Allelopathy and weed control ability of three cover crops residues, in conservation of agriculture

The Impacts of Woolly Cupgrass on the Antioxidative System and Growth of a Maize Hybrid

Green synthesis of Russian knapweed aqueous extract iron oxide nanoparticles and their applications for weed management in wheat

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