Autotoxicity of Barley

Ben-Hammouda, Moncef; Ghorbal, Habib; Kremer, Robert J.; Oueslatt, Oussama

doi:10.1081/pln-120004379

Cited by 29 publications

(28 citation statements)

References 14 publications

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“…Ben-Hammouda et al (2002) studied barley autotoxicity in extracts from the roots, stems and leaves of barley, and showed that the leaves were the most important source of allelopathic substances and the roots were the least important. Our results (Fig.…”

Section: Discussionmentioning

confidence: 99%

Allelopathic potential of watermelon tissues and root exudates

Hao

Wang

Christie

et al. 2007

Scientia Horticulturae

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Allelopathic potential of watermelon in hydroponic culture was investigated using the continuous root exudates trapping system (CRETS). Laboratory bioassays and high-performance liquid chromatography (HPLC) were used for quantification of phytotoxins in different plant tissues and root exudates collected using XAD-4 resin. Seedling growth of both watermelon and lettuce was significantly inhibited by watermelon root exudates and the degree of inhibition increased with increasing concentration of exudates. Root exudates had inhibitory effects throughout the experiment and these were most pronounced during the period 41-50 days after transplanting. Inhibitory effects of various plant tissues were demonstrated using the bioassay tests. Frulic acid was the dominant component found using HPLC and the amounts of allelochemicals found in the plant extracts were correlated with the bioassay results using the Petri dish test. The results indicate that the allelopathic potential of watermelon may play an important role in the phenomenon referred to as 'soil sickness'. #

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Section: Discussionmentioning

confidence: 99%

Allelopathic potential of watermelon tissues and root exudates

Hao

Wang

Christie

et al. 2007

Scientia Horticulturae

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“…First appeared in an early report, who claimed that the roots of wheat, oats, and certain other crop plants exude chemicals inhibitory to their own seedlings. Since then, autotoxicity has been identified in many field crops, including alfalfa, rice, barley, wheat, asparagus and cucurbit crops [44,45]. Study display that, aqueous extract of wheat differed in varietal autotoxicity and varietal allelopathy, inhibiting wheat germination by 2% -21%, radicle growth by 15% -30%, and coleoptile growth by 5% -20%.…”

Section: Toxicity Of Wheat Allelopathymentioning

confidence: 99%

Research on the allelopathic potential of wheat

Lam¹,

Sze²,

Tong³

et al. 2012

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Objective: This paper mainly discusses the Allelopathic potential of wheat. Methods: This paper is prepared by reviewing the latest academic literatures. Result: The green revolution in the 1960s caused an increase in the demand for food. The agricultural sector and farmers tended to spend more time on the agricultural work but the crop yield was suppressed by the weeds. Hence, the usage of herbicide insecticides, fungicides and others chemicals had been increased. Although herbicides are efficient for weed controls, the continuous uses had gradually stimulated the weeds developing an effecttive resistance to the chemicals. Wheat (Triticum aestivum L.) is known as allelopathic against crops and weeds. Allelopathy of wheat (Triticum aestivum L.) has been extensively examined for its potentials in weeds management. The al-lelopathic activity of wheat has been attributed to hydroxamic acids, the related compounds and phenolic acids. Therefore, it could effectively reduce herbicide uses in order to maintain an eco-friendly environment and a cost-effective weed control.

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“…Genotypic variation was also observed at that level, with 'Arbi' and 'Ardhaoui' being more autotoxic than 'Manel' and 'Tej'. Evidence of autotoxicity was first documented by Ben-Hammouda et al (2002) using a water extract of Tunisian barley residues from roots, stems and leaves obtained from mature plants developed in the field. He found that 'Manel' was the most susceptible cultivar to the water extract of 'Rihane' residues.…”

Section: Fig 6 Evolution Of Barley Allelochemicals Toxicity Over Timmentioning

confidence: 99%

“…Barley was also found to be autotoxic (Ben-Hammouda et al 2002), which can be described as an intraspecific form of allelopathy, by decreasing its own seed germination or seedling development (Putnam 1985). These studies concluded that barley is prone to a high 'allelopathic risk' in barley-barley cropping sequences (Oueslati et al 2005).…”

Section: Introductionmentioning

confidence: 99%

Allelopathic and autotoxicity effects of barley (Hordeum vulgare L. ssp. vulgare) root exudates

et al. 2014

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The allelopathic activity of barley (Hordeum vulgare L. ssp. vulgare) root exudates was studied by comparing their effects on seedling establishment in barley itself and in two weed species, Bromus diandrus Roth, and Lolium rigidum Gaudin, using an original laboratory protocol, named 'seed-after-seed'. In this protocol, the donor and the receiver species of water-soluble allelochemicals are grown one after the other in the same dishes, in conditions reducing resource competition between both species. Growth of all receptive species (weeds and barley) was inhibited in a dose-dependent manner, when using increasing barley seed densities (0, 8, 19 and 25 seeds per Petri dish). In our conditions, the barley varieties and landraces exhibited different allelopathic activities against weeds or barley. The allelopathic potential of the barley root exudates was also dependent on the receiver species. Indeed, the released allelochemicals proved to be more toxic against the weed plants than on barley itself. Furthermore, the toxicity of the allelochemicals increased after their release by roots, between day 0 and day 6. These allelochemicals might contribute to the plant community dynamics and their usefulness as bio-herbicides deserves further consideration.

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Autotoxicity of Barley

Cited by 29 publications

References 14 publications

Allelopathic potential of watermelon tissues and root exudates

Allelopathic potential of watermelon tissues and root exudates

Research on the allelopathic potential of wheat

Allelopathic and autotoxicity effects of barley (Hordeum vulgare L. ssp. vulgare) root exudates

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