Potent herbicidal activity of Inula crithmoïdes L.

Omezzine, Faten; Ladhari, Afef; Rinez, Asma; Haouala, Rabiaa

doi:10.1016/j.scienta.2011.08.013

Cited by 30 publications

(19 citation statements)

References 27 publications

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“…The data on seed germination, shoot and root lengths of radish and lettuce were subjected to analysis of Variance (ANOVA) and any difference in treatment means were tested with LSD tests at p< 0.05 (Zar 2009;Ilori et al 2010;Omezzine et al 2011;Shahbaba 2012 The shoot and root lengths of treated radish and lettuce seedlings as percentages of the control were tested for growth promotion and inhibition was based on the formula:…”

Section: Discussionmentioning

confidence: 99%

“…The extracts may contain a lot of water, as can be seen in the non-deleterious effects of the extracts of fresh and dried plant materials of dodder on germination of radish and lettuce, registering almost100% germination. Seed germination of radish was inhibited by the ethanol extracts of dodder in excess of 5000ppm, while the growth of radish and lettuce seedlings as test plants were inhibited by dodder's ethanol extracts in excess of 200ppm.In fact, several previous studies have been carried out had proved that certain types of weeds can be slowed or inhibited the growth by using aqueous extracts allelopathic plant samples (Khanh et al2008;Macías 2007;Omezzine et al 2011;Yu et al 2011). Khanh (2008) suggested that allelochemicals from parasitic plants, including Cuscuta spp.…”

Section: Discussionmentioning

confidence: 99%

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Allelopathic Potentials of Cuscuta campestris Yuncker Extracts on Germination and Growth of Radish (Raphanus sativus L.) and Lettuce (Lactuca sativa L.)

Othman¹,

Leong²,

Bakar³

et al. 2012

JAS

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Cuscuta campestris Yuncker, commonly known as Golden dodder is an annual problematic parasitic weed in abandoned and derelict areas in Malaysia. The weed is leafless plant, glabrous, yellow-white in colour, with haustoria, sucker-like attachments to the aerial parts of a wide range of host plants. This study was instituted to assess the allelopathic potentials of C. campestris on lettuce and radish as test plants. Three types of treatment using aqueous extract of fresh (fc), and dried s (dc) and ethanol extract of dried C. campestris (ec) were assayed for their allelopathic effects on radish (Raphanus sativus) and lettuce (Lactuca sativa) seeds. These extracts reduced seed germination, root and shoot lengths of both radish and lettuce. The roots of radish were more sensitive vis-à-vis the shoots when exposed to fc, while shoots were more sensitive than roots when exposed to dc. Dose-mediated differences in shoot and root lengths of radish were registered when treated with ec. The roots of lettuce were more sensitive compared with the shoots when exposed to ec, while no measurable effect was observed when roots and shoots of lettuce were exposed to fc and dc. The results demonstrated the allelopathic effects of dodder on the tested host plants. The potentials of these extracts and their chemical constituents as bioactive ingredients for new herbicides are implied.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Allelopathic Potentials of Cuscuta campestris Yuncker Extracts on Germination and Growth of Radish (Raphanus sativus L.) and Lettuce (Lactuca sativa L.)

Othman¹,

Leong²,

Bakar³

et al. 2012

JAS

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“…In contrast to the filter paper experiment, leaf powder was more potent relative to leaf methanol extract in the soil condition (Table 3). This is to be expected due to the myriad influences of abiotic and biotic factors in the soil such as microbial breakdown and transformation, leaching, and adsorption onto soil particles (Omezzine et al, 2011). Phytotoxic substances of leaf extract may have denatured in the soil, but they are released gradually from leaf powder and take more time to be decomposed.…”

Section: Discussionmentioning

confidence: 99%

“…Extracts can be used as a medium for expression of allelochemical activity to suppress weed growth (Macías et al, 2007). Several researchers have shown the use of plant extracts for weed suppression as pre-emergence and foliar spray in the laboratory and application under glasshouse and field conditions (Haq et al, 2010;Omezzine et al, 2011;Dadkhah, 2013).…”

Section: Introductionmentioning

confidence: 99%

Control of weeds in glasshouse and rice field conditions by phytotoxic effects of Tinospora crispa (L.) Hook.f. & Thomson leaves

Aslani

Juraimi

Ahmad-Hamdani

et al. 2016

Chilean J. Agric. Res.

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Phytotoxic potential of powder and methanol extract of Tinospora crispa (L.) Hook. f. & Thomson leaves as pre-and post-emergence applications on the growth of transplanted rice (Oryza sativa L.) and associated weeds were evaluated under glasshouse and field conditions to determine its herbicidal activity as soil additive material in rice fields. In glasshouse study, utilization of leaf powder and leaf extract of T. crispa as pre-emergence application provided a satisfactory weed control, inhibiting seed germination and reducing the growth of germinated seedlings with an increase in the yield of transplanted rice. The magnitude of the phytotoxic effects at the same concentration levels in the test plants was dependent on the application methods (powder and extract), time of application (pre-and post-emergence), concentration and the recipient species. Field experiment consisted of T. crispa leaf powder (1, 2 and 4 t ha -1 ), chemical herbicide (pretilachlor + pyribenzoxim at 1 L ha -1 ) as positive control and a negative control (no treatment). There was nonsignificant difference between leaf powder-treated plots (2 and 4 t ha -1 doses) and plots that received herbicidal treatment in terms of percentage reduction of emergence and weed DM. In plots amended with 1, 2 and 4 t ha -1 leaf powder, weed dry weight was reduced by nearly 80%, 97% and 99% and total weed seedling density was inhibited by 73%, 94% and 99%, respectively, compared to untreated plots. There was a significant promotion on grain yield, straw dry weight and number of seed per panicle of rice, when treated with leaf powders and chemical herbicide compared with negative control. These results suggest that T. crispa has a significant phytotoxic activity on the germination and growth of weed species in rice fields.

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“…Each crude aqueous extract at 10% (m/v) was diluted with sterile distilled water to give final concentrations of 1, 2, 3 and 4% (m/v) ( Table 1). The 16 extracts were used freshly within a week (Omezzine et al, 2011;El Ayeb et al, 2013).…”

Section: Preparation Of Aqueous and Organic Extractsmentioning

confidence: 99%

Allelopathic activity of extracts of Citharexylum spinosum L. from Tunisia

Ayeb-Zakhama¹,

Harzallah‐Skhiri²

2016

J. Plant Breed. Crop Sci.

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Allelopathic potential of Citharexylum spinosum L. (Verbenaceae) an exotic tree introduced in Tunisia many years ago was evaluated. Organic extracts using hexane, ethyl acetate and methanol solvents together with aqueous extracts at different concentrations were prepared from different parts of the plant (roots, stems, leaves and flowers). Yields in the 12 organic extracts together with their phenol contents were reported. Leaves methanol extract showed the highest yield and amount in total phenols (6.43%; 617.93±1.12 mg gallic acid equivalent/100 g MS, respectively). All extracts were tested on germination and early growth of two crops: (Lactuca sativa L.) and (Triticum aestivum L.) and two weeds: (Peganum harmala L.) and (Silybum marianum L.). Twelve parameters were established and used to the principal components analysis (PCA) and the hierarchical clusters (HCA) analysis. Three groups of extracts were separated according to their allelopathic potentiality. Almost of organic extracts were totally opposed to seed germination of peganum and thistle.

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Potent herbicidal activity of Inula crithmoïdes L.

Cited by 30 publications

References 27 publications

Allelopathic Potentials of Cuscuta campestris Yuncker Extracts on Germination and Growth of Radish (Raphanus sativus L.) and Lettuce (Lactuca sativa L.)

Allelopathic Potentials of Cuscuta campestris Yuncker Extracts on Germination and Growth of Radish (Raphanus sativus L.) and Lettuce (Lactuca sativa L.)

Control of weeds in glasshouse and rice field conditions by phytotoxic effects of Tinospora crispa (L.) Hook.f. & Thomson leaves

Allelopathic activity of extracts of Citharexylum spinosum L. from Tunisia

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