Phytochemical investigation and phytotoxic activity of aerial parts of oilseed radish (Raphanus sativus var. oleifer Stokes)

Ricardo, Letycia Lopes; Bernardi, Darlon I.; Mantovanelli, Gislaine Cristiane; Moreno, Beatriz Pereira; Mito, Márcio Shigueaki; Silva, Adriano Antonio; Oliveira, Rubem Silvério de; Ishii–Iwamoto, Emy Luiza; Sarragiotto, María Helena; Baldoqui, Débora Cristina

doi:10.1016/j.bse.2018.03.009

Cited by 4 publications

(2 citation statements)

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“…Porcentaje de germinación (% G) y velocidad del índice de germinación (SGI) de la hierba B. pilosa en presencia de extractos acuosos de forraje (mijo perla y crotalaria). Studies demonstrating the chemical and physical effects of cover crops of different species on invasive plants have been recurrent (5,18,21,23,26). Sturm et al (2018) claimed that knowledge of the proportions of allelopathic and competitive effects could lead to the development of cover crop consortia with optimal weed suppression characteristics in the field.…”

Section: Resultsmentioning

confidence: 99%

Effect of forage aqueous extracts on Glycine max L. Merr., Zea mays L. and Bidens pilosa L.

et al. 2022

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The aim of the present study was to investigate the potential allelopathic effects of isolated or intercropped aqueous forage extracts on the physiological performance of soybean [Glycine max (L.) Merr.] and corn (Zea mays L.) seeds, as well as their phytotoxicity to the weed species Bidens pilosa L. Aqueous extracts were prepared at a concentration of 5%, and the tests with soy and corn were conducted by wetting the germination papers with different treatments and performing procedures within the standards of the Brazilian Rules of Seed Analysis. Tests with the cover plant extracts on the seeds of B. pilosa used BOD-type repetitions. Fifty weed seeds were placed in a gerbox with filter paper moistened with the different treatments with five repetitions. Distilled water was used as the control in all tests. Extracts of Avena strigosa Schreb and Raphanus sativus L. (radish), cultivated individually and in combination, increased the seed germination percentage (%G) and the length of soybean seedlings. Similarly, extracts of Pennisetum glaucum (L.) R.Br and Crotalaria spectabilis Roth, in individual and combined cultivation, provided gains in corn %G. Furthermore, all tested extracts suppressed germination and decreased the speed of the germination index of the hairy beggarticks when compared to the control, with the radish extract showing the greater reduction effect on the %G of the weed plant B. pilosa. Highlights: The use of Crotalaria as a cover crop has a positive effect on the initial growth of corn. The use of black oat and forage radish intercropped had the potential to increase soybean yield. The use of cover crops contributes to the integrated management of weeds. The choice of cover plant is important for the success of crop rotation.

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Section: Resultsmentioning

confidence: 99%

Effect of forage aqueous extracts on Glycine max L. Merr., Zea mays L. and Bidens pilosa L.

et al. 2022

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“…Thus, identification of the natural compounds in ruzigrass with toxic activity on weeds can boost its use in notillage agricultural environments, minimize the use of synthetic herbicide, and reduce environmental contamination and the selection pressure of herbicideresistant weed biotypes. [17] Continuing our research on the chemical investigation of species used as a cover crops, [18] and based on the limitation of studies focused on the chemistry of ruzigrass, the present work was planned (a) to isolate and identify the metabolites present in different fractions obtained from the crude methanolic extract of the aerial parts of ruzigrass; (b) to evaluate the activity of fractions, the crude methanolic extract, and some identified compounds on the germination and initial growth of weed species, and (c) to compare the sensitivity of three weed species (Bidens pilosa L., [19] Euphorbia heterophylla L. [20] and Ipomoea grandifolia L.) [19] that are commonly found in soybean plantations by using the chemometric data analysis.…”

Section: Introductionmentioning

confidence: 99%

Chemical Characterization and Phytotoxic Effects of the Aerial Parts of Ruzigrass (Urochloa ruziziensis)

Moreno

Mantovanelli

Ricardo

et al. 2020

Chemistry & Biodiversity

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Studies of the phytotoxic effects between plants can be a crucial tool in the discovery of innovative compounds with herbicide potential. In this sense, we can highlight ruzigrass (Urochloa ruziziensis), which is traditionally used in the crop rotation system in order to reduce weed emergence. The aim of this work was to characterize the secondary metabolites of ruzigrass and to evaluate its phytotoxic effects. In total, eight compounds were isolated: friedelin, oleanolic acid, α‐amyrin, 1‐dehydrodiosgenone, sitosterol and stigmasterol glycosides, tricin and p‐coumaric acid. Phytotoxic effects of the crude methanolic extract and fractions of ruzigrass were assessed using germination rate, initial seedling growth, and biomass of Bidens pilosa, Euphorbia heterophylla and Ipomoea grandifolia. Chemometric analysis discriminated the weed species into three groups, and B. pilosa was the most affected by fractions of ruzigrass. The phytotoxic activities of 1‐dehydrodiosgenone, tricin, and p‐coumaric acid are also reported, and p‐coumaric acid and 1‐dehydrodiosgenone were active against B. pilosa.

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Possibility of spreading weeds with oil radish seeds

Mikhailova¹,

Ebel²

2020

asj

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Phytochemical investigation and phytotoxic activity of aerial parts of oilseed radish (Raphanus sativus var. oleifer Stokes)

Cited by 4 publications

References 31 publications

Effect of forage aqueous extracts on Glycine max L. Merr., Zea mays L. and Bidens pilosa L.

Effect of forage aqueous extracts on Glycine max L. Merr., Zea mays L. and Bidens pilosa L.

Chemical Characterization and Phytotoxic Effects of the Aerial Parts of Ruzigrass (Urochloa ruziziensis)

Possibility of spreading weeds with oil radish seeds

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