Allelopathic Potential of Anagallis arvensis L. : A Cosmopolitan Weed

Rebaz, Zenab; Shaukat, Syed Shahid; Siddiqui, A Imran

doi:10.3923/pjbs.2001.446.450

Cited by 10 publications

(3 citation statements)

References 22 publications

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“…As a matter of fact, the Anagallis genus is characterized by strong allelopathic potential, particularly on gramineous plants, such as millet or wheat: this property, together with the highest weed mycorrhization recorded in field, explain its predominance in such competitive agroecosystem (Rebaz, Shaukat, & Siddiqui, 2001). As a matter of fact, the Anagallis genus is characterized by strong allelopathic potential, particularly on gramineous plants, such as millet or wheat: this property, together with the highest weed mycorrhization recorded in field, explain its predominance in such competitive agroecosystem (Rebaz, Shaukat, & Siddiqui, 2001).…”

Section: Discussionmentioning

confidence: 99%

“…were the most abundant weed species (25% of the total), with a corresponding increase of mycorrhization of +9.4% in S. media and +30% in A. arvensis respect to those recorded in the CNT. As a matter of fact, the Anagallis genus is characterized by strong allelopathic potential, particularly on gramineous plants, such as millet or wheat: this property, together with the highest weed mycorrhization recorded in field, explain its predominance in such competitive agroecosystem (Rebaz, Shaukat, & Siddiqui, 2001). The other species (i.e., S. media, P. aviculare and R. crispus), which are generally considered as non-host endomycorrhizal plants (Ronikier & Mleczko, 2006), showed in our systems intraradical structures usually formed by AMF, such as inter-radical hyphae, coils and vesicles, rarely in P. aviculare, sometimes in R. crispus and more frequently in S. media.…”

Section: Discussionmentioning

confidence: 99%

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Mycorrhiza‐mediated interference between cover crop and weed in organic winter cereal agroecosystems: The mycorrhizal colonization intensity indicator

Trinchera¹,

Ciaccia²,

Testani³

et al. 2019

Ecology and Evolution

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The mycorrhizal fungi are symbiotic organisms able to provide many benefits to crop production by supplying a set of ecosystem functions. A recent ecological approach based on the ability of the fungi community to influence plant–plant interactions by extraradical mycelium development may be applied to diversified, herbaceous agroecosystems. Our hypothesis is that the introduction of a winter cereal cover crop (CC) as arbuscular mycorrhizal fungi (AMF)–host plant in an organic rotation can boosts the AMF colonization of the other plants, influencing crop–weed interference. In a 4‐years organic rotation, the effect of two winter cereal CC, rye and spelt, on weed density and AMF colonization was evaluated. The AMF extraradical mycelium on CC and weeds roots was observed by scanning electron microscopy analysis. By joining data of plant density and mycorrhization, we built the mycorrhizal colonization intensity of the Agroecosystem indicator (MA%). Both the CC were colonized by soil AMF, being the mycorrhizal colonization intensity (M%) affected by environmental conditions. Under CC, the weed density was reduced, due to the increase of the reciprocal competition in favor of CC, which benefited from mycorrhizal colonization and promoted the development of AMF extraradical mycelium. Even though non‐host plants, some weed species showed an increased mycorrhizal colonization in presence of CC respect to the control. Under intense rainfall, the MA% was less sensitive to the CC introduction. On the opposite, under highly competitive conditions, both the CC boosted significantly the mycorrhization of coexistent plants in the agroecosystem. The proposed indicator measured the agroecological service provided by the considered CCs in promoting or inhibiting the overall AMF colonization of the studied agroecosystems, as affected by weed selection and growth: It informs about agroecosystem resilience and may be profitably applied to indicate the extent of the linkage of specific crop traits to agroecosystem services, contributing to further develop the functional biodiversity theory.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Mycorrhiza‐mediated interference between cover crop and weed in organic winter cereal agroecosystems: The mycorrhizal colonization intensity indicator

Trinchera¹,

Ciaccia²,

Testani³

et al. 2019

Ecology and Evolution

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“…While, it showed 13.19% inhibition percentage of root growth at the concentration 25%, 39.15% inhibition at the concentration 50%, 34.04% inhibition at concentration 75% and 48.94% inhibition at concentration 100%. Rebaz et al [58] reported that the aqueous extract of A. arvensis inhibited germination, root and shoot growth of Triticum aestivum, Zea mays, Daucus carota, Brassica compestris, Brassica napobrassica, Schumann ipearl and Pennisetum americanm. Salam et al [59] showed that A. arvensis reduced the radical growth of mung bean.…”

Section: Discussionmentioning

confidence: 99%

Allelopathic Effect of Some Wild Species on Germination and Growth of Bidens pilosa

Ibrahim

Saleh²,

Ammar³

et al. 2022

Advances in Environmental and Life Sciences

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The present study was conducted to determine the allelopathic effect of the aqueous extracts of Cynanchum acutum, Anagallis arvensis, Chenopodium murale, Malva parviflora, Sonchus oleraceus and Portulaca oleracea on the germination and growth of Bidens pilosa plant. Also, the presence of total phenols, flavonoids, saponins, tannins and alkaloids, were screened in the studied plants. The results indicated that the aqueous extract of C. acutum, A. arvensis, C. murale, M. parviflora, S. oleraceus and P. oleracea showed a remarkable allelopathic effect on germination and growth of B. pilosa. The effectiveness of the extract was much higher on C. acutum, as it is the most effective in reducing the shoot and root growth of B. pilosa followed by S. oleraceus, M. parviflora, P. oleracea, C. murale and A. arvensis. The allelochemicals such as total phenols, flavonoids, saponins, tannins and alkaloids present in C. acutum, A. arvensis, C. murale, M. parviflora, S. oleraceus and P. oleracea. From the present study, it is concluded that the aqueous extract of the tested plants can be used as natural source in controlling B. pilosa.

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