Autotoxicity of wheat (Triticum aestivum L.) as determined by laboratory bioassays

Wu, Hanwen; Pratley, James; Lemerle, D.; An, Malaviya; Liu, De Li

doi:10.1007/s11104-007-9292-7

Cited by 77 publications

(55 citation statements)

References 42 publications

(76 reference statements)

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“…It is generally known that continuous cropping can affect crop growth and development, decrease yield and quality, and increase disease occurrence in most conditions (Wu et al, 2007;Dai et al, 2009;Zhang et al, 2011). Soil sickness is usually found in agricultural crops, especially in medicinal plant (Zhang et al, 2005;He et al, 2009;Yin et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

“…Soil sickness may be attributed to autotoxicity, soil microflora imbalance and changes in soil physiochemical properties (Young, 1984;Yu and Matsui, 1994). Previous studies report that build-up of plant pathogens is one of the major causes in soil sickness in Cistus ladanifer (Hassan et al, 1989), peach (Benizri et al, 2005), cucumber (Yao et al, 2006), Rehmannia glutinosa (Chen et al, 2007), Liriope (Zhao et al, 2010), while autotoxicity has been reported to be one of the major causes in soil sickness in cucurbit crops (Yu et al, 2000), alfalfa (Segiun et al, 2002), Cistus ladanifer (Alías et al, 2006), cucumber (Yao et al, 2006) and wheat (Wu et al, 2007). In many cases, soil microorganism played either direct or indirect role in yield reduction (Manici et al, 2003;Hu et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

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Effect of Intercropping of Angelica sinensis with Garlic on its Growth and Rhizosphere Microflora

Zhang¹,

Lang²,

Zhang³

et al. 2015

IJAB

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Aims and Methods A pot experiment was carried out to determine the effect of Angelica sinensis intercropped with garlic on A. sinensis growth and soil microbial communities in rhizosphere soil of A. sinensis under the scheme of A. sinensis intercropped with garlic. Results Soil microbial community was changed and bacteria functional group diversity was increased, and A. sinensis growth was improved when A. sinensis intercropped with garlic under the continuous cropping condition. Also, it shows that intercropping significantly increased root dry weight, and much less substantially shoot dry weight and plant height. Relative to the control, the activity of superoxide dismutase, peroxidase and catalase was increased by 80.00, 243.41 and 37.13%, respectively, but the content of malondialdehyde was decreased by 11.67%, along with a 70.13% yield improvement of A. sinensis, and 50.00% and 10.20% essential oil and alcohol-soluble extract increasing, respectively. The result also showed that the population of bacteria, aerobic cellulose-decomposing bacteria, organic phosphorus-solubilizing bacteria, inorganic phosphorus-solubilizing bacteria and potassium-solubilizing bacteria in rhizosphere soil were promoted in intercropping in vigorous growth stage. The abundance of aerobic cellulose-decomposing bacteria, organic phosphorussolubilizing bacteria and potassium-solubilizing bacteria in intercropping soils changed at the rootstock thickening. Although the total population of functional groups in intercropping A. sinensis rhizosphere soils was lower than in monocroping system, community diversity and evenness increased and dominance concentration decreased. Conclusions Intercropping A. sinensis with garlic can alleviate the soil sickness of A. sinensis.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Effect of Intercropping of Angelica sinensis with Garlic on its Growth and Rhizosphere Microflora

Zhang¹,

Lang²,

Zhang³

et al. 2015

IJAB

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“…Of particular interest have been potentially allelopathic compounds that may inhibit growth of weeds (Belz 2007), but also have been implicated in allelopathic interactions with crop plants (Roth et al 1999;Wu et al 2007). Besides effects on plants, allelochemicals may be involved in modifications of physical properties of soil or activities of soil microorganisms (Bertin et al 2003).…”

Section: Introductionmentioning

confidence: 99%

Effect of sorghum seedlings, and previous crop, on soil fluorescent Pseudomonas spp.

2008

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Hypotheses in which sorghum seedlings [Sorghum bicolor (L.) Moench] of different genotypes will differentially modify soil microorganisms and will affect subsequent planting of wheat (Triticum aestivum L.) seedlings, were tested. Wheat cultivar Lewjain, and sorghum genotypes Redlan and RTx433, were planted into soils previously planted with wheat or sorghum in growth chamber experiments. Total culturable fungi and oomycetes, and fluorescent Pseudomonas spp. numbers (cfu) were determined. Pseudomonads were screened for hydrogen cyanide (HCN) production, for the presence of the phlD gene for 2,4-diacetylphloroglucinol production (Phl) and for a region of the operon involved in phenazine-1-carboxylic acid (PCA) production. Pasteurized soils were inoculated with rifampicin-marked strains of Pseudomonas fluorescens then planted with Lewjain, Redlan and RTx433 to assess rhizosphere and soil colonization. Effects of plant species, sorghum genotype and previous crop on culturable fungi and oomycetes, and pseudomonad numbers (cfu g −1 soil) were statistically significant. Soils planted with RTx433 or Lewjain had greater numbers of fungal cfu than soils planted with Redlan. When Lewjain seedlings were grown in soil previously planted with RTx433, there were greater numbers of fungal cfu than when Lewjain was planted into Redlan soil. Wheat planted into wheat soil resulted in statistically significantly fewer numbers of pseudomonads than when planted into sorghum soil. Overall, percentages of HCN-producing pseudomonads increased, especially when wheat seedlings were planted in wheat soil. For most treatments, percent of isolates with Phl declined, except when Redlan was planted into Redlan soil, which resulted in increased Phl isolates. When rifampicin-marked P. fluorescens isolates were applied to pasteurized soil, sorghum seedlings sustained rhizosphere and soil populations similar to those on wheat. Sorghum genotypes may differ in associations with soil microorganisms, Plant Soil

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“…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%. These results suggest that careful selection of suitable wheat varieties is necessary in a continuous cropping system in order to minimize the negative impacts of varietal allelopathy and varietal autotoxicity [46]. Confirmation under controlled environments showed that wheat residue water extracts were autotoxic to the germination and seedling growth of wheat.…”

Section: Toxicity Of Wheat Allelopathymentioning

confidence: 83%

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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Autotoxicity of wheat (Triticum aestivum L.) as determined by laboratory bioassays

Cited by 77 publications

References 42 publications

Effect of Intercropping of Angelica sinensis with Garlic on its Growth and Rhizosphere Microflora

Effect of Intercropping of Angelica sinensis with Garlic on its Growth and Rhizosphere Microflora

Effect of sorghum seedlings, and previous crop, on soil fluorescent Pseudomonas spp.

Research on the allelopathic potential of wheat

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