Research on the allelopathic potential of wheat

Lam, Yau; Sze, Stephen Cho Wing; Tong, Yao; Ng, Tzi Bun; Tang, Sydney Chi Wai; Ho, James Chung Man; Xiang, Qiaoqing; Lin, Xiao; Zhang, Yanbo

doi:10.4236/as.2012.38119

Cited by 14 publications

(15 citation statements)

References 42 publications

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“…[7] [8], several other weeds and crops as rice, barley, rye and cotton, among others [16]. Based on our results we believe wheat unfortunately has little effect on sourgrass; it can reduce plant emergence at some extent, but plants which are able to germinate apparently present most pronounced initial growth compared to those grown in absence of wheat.…”

Section: Methodsmentioning

confidence: 74%

“…Wu et al [15] report that the allelopathic effect of wheat on ryegrass (Lolium rigidum) was positively correlated with total phenolic acids content, and Lam et al [16] report that hydroxamic acids are also involved in wheat allelopathic ability. Thus, although not possible in this study, the assessment of phenolic and hydroxamic contents would help selecting those genotypes with superior contents of allelopathically effective compounds in ).…”

Section: Methodsmentioning

confidence: 99%

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Allelopathic Potential of Wheat on Sourgrass Resistant to Glyphosate

Ito¹,

Concenço²,

Marques³

et al. 2015

AJPS

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We aimed with this study to assay the allelopathic potential of wheat genotypes in inhibiting germination and initial growth of sourgrass (Digitaria insularis) resistant to the herbicide glyphosate. Two experiments were installed under greenhouse conditions: the first one aimed to assay the potential of wheat genotypes in inhibiting emergence and initial growth of two test plants, and the second aimed to evaluate the potential of those wheat genotypes which performed better at the first experiment, inhibiting the emergence and initial growth of sourgrass biotypes resistant to the herbicide glyphosate. Five doses of aqueous cool-extracted extract from 32 wheat genotypes were applied to tomato and cucumber (Experiment 1) aiming to identify the ones with higher inhibitory effect. The five most inhibitory wheat genotypes were selected for Experiment 2, where the same doses of extract were applied on sourgrass. For both experiments, shoot fresh and dry mass, as well as water content, were assessed. Sourgrass germination is affected by wheat extracts, but initial seedling growth seems not to be affected; wheat genotypes differ in terms of their allelopathic potential in inhibiting sourgrass germination; wheat presents little inhibitory effect on sourgrass.

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Section: Methodsmentioning

confidence: 74%

Section: Methodsmentioning

confidence: 99%

Allelopathic Potential of Wheat on Sourgrass Resistant to Glyphosate

Ito¹,

Concenço²,

Marques³

et al. 2015

AJPS

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“…Among the biochemical attributes of plant responses, proline gathered the key role in maintaining the integrity of cells. It has been an essential component of protein in plant cells and found to be over produced during stress conditions; most often to protect plants form the adverse environment (Lam et al, 2012). Therefore, proline accumulation is a regular physiological response to various stresses where it acts as osmolyte and store nitrogen and carbon (Tshewang et al, 2017).…”

Section: Discussionmentioning

confidence: 99%

Screening of active formulation from combined sunflower (Helianthus annuus) and neem (Azadirachta indica) aqueous extract to control growth of lesser canary grass (Phalaris minor).

Batool¹,

Riaz²,

Irum³

et al. 2019

PAK.J.BOT.

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The aim of study was to find an effective way of managing growth of lesser canary grass (Phalaris minor) in wheat fields. Sixteen formulations (F1-F16) were prepared by combining the aqueous extracts of sunflower (Helianthus annuus) and neem (Azadirachta indica) in specific ratios (10-40%). Remarkable allelopathic potential was exhibited by improved growth of wheat and inhibition of the weed growth. The regulatory effects were determined on plant root and shoot lengths, free proline and total phenolic contents, and the antioxidant potential of the wheat and weed plants in pot experiment. The findings suggested 'F3' as the most effective formulation prepared by combining one part of aqueous extracts of Helianthus annuus with three parts of Azadirachta indica extract [S (10%) + N (30%)], as its application (10 times dilution) stimulated the shoot length of wheat and inhibited the root length of canary grass plants. So, we propose this combination as an effective allelopathic strategy to control growth of lesser canary grass in wheat fields.

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“…Nowadays, the phenomenon of allelopathy is increasingly used in agriculture, especially in organic farming. So far, numerous examples of secondary metabolites applied in regulation of weed infestation in various agricultural crop systems have been reported [1][2][3][4][5][6][7][8]. A strong allelopathic potential of walnut trees (Juglandaceae members) which synthesize the phytotoxin juglone (JU; 5-hydroxy-1,4-naphthoquinone) has been reported [9][10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

Juglone-Triggered Oxidative Responses in Seeds of Selected Cereal Agrosystem Plant Species

Sytykiewicz¹,

Kozak²,

Łukasik³

et al. 2019

Pol. J. Environ. Stud.

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Juglone (JU; 5-hydroxy-1,4-naphthoquinone) is an allelochemical synthetized by a wide range of Juglandaceae members. This compound evokes a wide array of detrimental effects in susceptible acceptor plants, including growth inhibition and impairments in the course of biochemical and physiological processes. Therefore, juglone may be considered as a potential bioherbicide in weed control in cereal crops. The purpose of our study was to determine the influence of JU treatment on the content of superoxide anion radical (O 2 •−)-sensitive and early marker of oxidative stress, and the activity of superoxide dismutase (SOD)-enzyme that functions as a crucial component of the first line antioxidative defense in seed tissues. In the study we tested seeds of four selected plant species of cereal agrosystem: corn poppy (Papaver rhoeas L.), corn cockle (Agrostemma githago L.), spring wheat (Triticum aestivum L., cv. Nawra), and spring oat (Avena sativa L., cv. Maczo). Additionally, the allelopathic influence of JU on seed germination of the studied plant species was investigated. The seeds were exposed to three examined juglone concentrations: 0.001, 0.1, and 10 mM (4% methanoldeionized water solutions), whereas the control seeds were treated with aqueous methanolic solutions (4%). Obtained results evidenced much more severe suppression of germination process and robust generation of superoxide anion radical in the tested weeds, compared to the cereals, and the crucial role of superoxide dismutase in limiting the juglone-induced oxidative stress in the studied seeds.

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Research on the allelopathic potential of wheat

Cited by 14 publications

References 42 publications

Allelopathic Potential of Wheat on Sourgrass Resistant to Glyphosate

Allelopathic Potential of Wheat on Sourgrass Resistant to Glyphosate

Screening of active formulation from combined sunflower (Helianthus annuus) and neem (Azadirachta indica) aqueous extract to control growth of lesser canary grass (Phalaris minor).

Juglone-Triggered Oxidative Responses in Seeds of Selected Cereal Agrosystem Plant Species

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