Effect of Aqueous Leaf Leachate of <i>Anthemis cotula</i>– An Alien Invasive Species on Germination Behaviour of Some Field Crops

Allaie, R. R.; Reshi, Zafar A.; Rashid, Irfan; Wafai, B. A.

doi:10.1111/j.1439-037x.2006.00205.x

Cited by 27 publications

(24 citation statements)

References 34 publications

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“…2004), including Eltrygia repens (Korhammer & Haslinger 1994), Cyperus rotundus (Agarwal et al . 2002), Lantana camara (Saxena 2000), and Anthemis cotula (Allaie et al . 2006).…”

Section: Discussionmentioning

confidence: 99%

“…Allelopathy is one of the mechanisms that is contributing to the success of at least some of the worst plant invaders in the world (Weir et al 2004), including Eltrygia repens (Korhammer & Haslinger 1994), Cyperus rotundus (Agarwal et al 2002), Lantana camara (Saxena 2000), and Anthemis cotula (Allaie et al 2006). The significant inhibition that the water extracts from the M. micrantha leaves, stems, and roots imposed on the germination rate, germination speed, radicle and hypocotyl length, and dry weight of the C. lacryma-jobi seedlings suggests the presence of allelopathic water-soluble substances in the extracts.…”

Section: Discussionmentioning

confidence: 99%

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Potential allelopathic effects of Mikania micrantha on the seed germination and seedling growth of Coix lacryma‐jobi

Jin

2010

Weed Biology and Management

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The allelopathic potential of Mikania micrantha H.B.K. to affect the seed germination and seedling growth of Coix lacryma-jobi L. was investigated. Water-soluble allelopathic substances were found in the water extracts of M. micrantha.The effect of the water extracts on the seed germination and seedling growth of C. lacryma-jobi was concentration-dependent. The water extracts from the different plant parts (leaf, stem, and root) of M. micrantha differed in their effect on the germination and seedling growth of C. lacryma-jobi, with the effect of the leaf extract being the least inhibitory.The malondialdehyde (MDA) content in the C. lacryma-jobi seedlings increased by 64%, 45%, and 52% of the control with increasing concentrations of the extracts of the root, stem, and leaf (80, 400, and 400 g L -1 , respectively).The extract from the M. micrantha roots significantly increased the catalase (CAT) activity of the C. lacryma-jobi seedlings (48% and 54% of the control at the concentrations of 20 g L -1 and 80 g L -1 , respectively).The extracts from the leaves and stems at low concentrations increased the CAT activity, but at high concentrations, the extracts decreased the CAT activity.The extracts from the roots, stems, and leaves at concentrations of 80, 400, and 400 g L -1 also significantly decreased the peroxidase (POD) activity of the C. lacryma-jobi seedlings to 27%, 52%, and 34% of the control, respectively.These results indicate that the water extracts of M. micrantha could inhibit the seed germination and seedling growth of C. lacryma-jobi through the regulation of anti-oxidase activity, such as POD and CAT in the cells. The growth inhibition of the C. lacryma-jobi seedlings is probably related to injury after oxidization of the cell membranes with the increase of MDA content.

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“…2004), including Eltrygia repens (Korhammer & Haslinger 1994), Cyperus rotundus (Agarwal et al . 2002), Lantana camara (Saxena 2000), and Anthemis cotula (Allaie et al . 2006).…”

Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Potential allelopathic effects of Mikania micrantha on the seed germination and seedling growth of Coix lacryma‐jobi

Jin

2010

Weed Biology and Management

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“…From this, the proportion of seeds that germinated and the speed of germination could be determined. Speed of germination was calculated using an adjusted formula from Allaie et al (2006): Σ(N 1 /1+N 2 /2+N 3 /3+…..+N i/i ) , where N 1 is number of seeds germinated on day 1, N 2 is number of seeds germinated on day 2, etc. and N i is the number of seeds germinated on day i.…”

Section: Reproductive Assessmentsmentioning

confidence: 99%

The effects of competition and herbicide drift on non-target plant populations

Montroy¹

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Herbicide drift is the movement of herbicide away from its intended target. The effect of drift on non-target plants is considered in environmental risk assessments, where the goal of the assessment is to protect plant populations and communities. The aim of this study was to evaluate the assumption that the single species tests used in risk assessments are fully protecting wild plant populations, as they do not account for interspecific interactions. In a greenhouse two-species competition experiment, it was found that the competitive interactions between the model species, Centaurea cyanus and Silene noctiflora, were affected by low doses of glyphosate representing drift. These changes could affect both of their populations in the long-term, and would not be detected using current test guidelines. As interspecific competition is an important determinant of plant community structure, competitive interactions may need to be included in risk assessment to make more credible predictions on the effects of herbicide drift on non-target plants.

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“…The species was identified by Dr. Gemma Bramley and a voucher specimen is deposited in Kew Herbarium (K). Commercial seeds of Papaver rhoeas L. (La Semeria-www.Lasemeria.itItaly) and Avena sativa L. (Il Monastero-Sementi-Italy), chosen as model species of dicotyledonous and monocotyledonous plants (Allaie et al, 2006), were used. Damaged and undersized seeds were discarded; the seeds to be assayed were selected based on the uniformity of size.…”

Section: Plant Materialsmentioning

confidence: 99%