Allelopathic Effects of Aqueous Extract of Leaves of &lt;i&gt;Parthenium Hysterophorus&lt;/i&gt; L. on Seed Germination and Seedling Growth of Some Cultivated and Wild Herbaceous Species

Maharjan, Sanjeev; Shrestha, Bharat Babu; Jha, Pramod Kumar

doi:10.3126/sw.v5i5.2653

Cited by 78 publications

(69 citation statements)

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“…In most of the studies, its leaf and flower proved to be more phytotoxic than its stem and root (Wakjira et al, 2005;Marwat et al, 2008;Khan et al, 2012). Likewise, more inhibitory effects of these plant parts on root growth than shoot growth of maize, ryegrass, soybean and rice were also reported by Mersie & Singh (1987) and Maharjan et al (2007). In our study, the highest allelopathic activity of aqueous leaf extract of parthenium growing near the field border seem to be due to its higher total phenolic contents (6678.2 mg L -1 ), higher EC (9.89 dSm -1 ) and lower osmotic potential (-0.36MPa) as well as complex interactions of a large number of phenolic compounds, namely gallic acid (7.5 mg L -1 ), caffeic acid (12.9 mg L -1 ), 4 hydroxy-3-methoxy benzoic acid (37.1 mg L -1 ) and p-coumaric acid (9.4 mg L -1 ) (Tables 1 and 2).…”

Section: Resultsmentioning

confidence: 87%

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Allelopathic action of parthenium and its rhizospheric soil on maize as influenced by growing conditions

et al. 2014

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-Biosynthesis and subsequent release of allelochemicals by a plant into the environment is supposed to be influenced by its growing conditions. To ascertain what will be the allelopathic action of plant parts and rhizospheric soils of parthenium (Parthenium hysterophorus) growing at various farm locations with varied growing conditions, germination and seedling growth of maize hybrid (DK 6142) were assayed by sowing its seeds in petri plates lined with filter paper and pots filled with soil. Minimum germination percentage (30.0%), germination index (2.01), germination energy (36.3), seedling length (3.3 cm), seedling biomass (10 mg) and seedling vigor index (99.0) of maize were observed in leaf extract followed by fruit and whole plant extracts of parthenium growing near the field border. Rhizospheric soil collected underneath parthenium growing near a water channel caused maximum reductions in germination index (30.8%), germination energy (40.6%), seedling length (32.6%), seedling biomass (35.1%) and seedling vigor index (34.3%) of maize compared with that soil without any vegetation. Phytotoxic inhibitory effects of both parthenium plant and rhizospheric soil were more pronounced on maize root than its shoot growth. The higher suppressive action against germination and seedling growth of maize was probably due to higher total phenolic concentrations (6678.2 and 2549.0 mg L -1 ) and presence of phenolic compounds viz., gallic, caffeic, 4-hydroxy-3-methoxy benzoic, p-coumaric and m-coumaric acids; and ferulic, vanillic, syringic and m-coumaric acids in aqueous leaf extract of parthenium uprooted near the field border and its rhizospheric soil collected near a water channel, respectively. Keywords: allelopathy, Parthenium hysterophorus, plant bioassay, soil bioassay, Zea mays, phenolic compounds. RESUMO -

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Section: Resultsmentioning

confidence: 87%

“…The phytotoxic inhibition of germination and growth of maize and other crops by allelochemicals produced from various plant parts of parthenium have been well documented (Wakjira et al, 2005;Maharjan et al, 2007;Marwat et al, 2008;Dhole et al, 2011;Khan et al, 2012;Devi & Dutta, 2012).…”

Section: Introductionmentioning

confidence: 99%

Allelopathic action of parthenium and its rhizospheric soil on maize as influenced by growing conditions

et al. 2014

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“…Canola was more sensitive as compared to wheat crop. Maharjan et al (2007) have reported that inhibition in seed germination of the crucifer species (Raphanus sativus, Brassica campestris and B. oleracea) was more pronounced as compared to Oryza sativa, Triticum aestivum, Ageratina adenophora and Artemisia dubia even at a low concentration. It was noted that species varied considerably in their sensitivity to aqueous extracts of parthenium (Belz et al, 2007;Rashid et al, 2008).…”

Section: Discussionmentioning

confidence: 99%

Phytotoxic Activity of Parthenium Against Wheat and Canola Differ With Plant Parts and Bioassays Techniques

et al. 2016

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-Phytotoxic effects of invasive weed Parthenium hysterophorus were studied by using whole plant, leaf and root aqueous extracts at 0, 2.5, 5.0, 7.5 and 10% (w/v) concentrations against germination and early seedling growth of wheat and canola. Studies were carried out both in Petri plates with filter paper as substratum placed in controlled conditions and soil-filled plastic pots placed in open environments. Pronounced variation was noted for phytotoxic activity of different plant parts of parthenium, aqueous extract concentrations, test species, and bioassay techniques. Aqueous parthenium extracts either inhibited or delayed the germination and suppressed seedling growth of test species over control. For both test species, all the germination attributes were suppressed to a greater extent in Petri plates than in plastic pots. Leaf extracts were more suppressive to germination of test species than whole plant and root extracts. Increasing extract concentration beyond 2.5% caused significant reduction in seedling dry biomass of both test species. Aqueous parthenium extract diminished chlorophyll contents of wheat and canola by 32-63% and 29-69%, respectively. Nevertheless, an increase of 9-172% and 22-60% in phenolic contents of wheat and canola was recorded. Canola appeared to be more susceptible than wheat at all extract concentrations. Present study concluded that bioassays conducted under controlled condition using filter paper as substratum may be misleading due to over estimation of allelopathic response and variation in potential of receiver and donor species. Furthermore, it implies that threshold concentrations of allelochemicals for test species in Petri plates are rarely reached under field conditions. Keywords: allelopathic inhibition, aqueous extracts, bioassay techniques, germination dynamics, parthenium, phenolics, seedling growth. Palavras-chave: inibição alelopática, extratos aquosos, técnicas de bioensaios, dinâmica de germinação, parthenium, compostos fenólicos, crescimento de plântulas. RESUMO -Foram estudados os efeitos fitotóxicos da planta daninha invasora

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“…Aqueous extract of jatropha leaf was prepared following the method given by Maharjan et al, (2007). Fresh jatropha leaves weighing 200 gm were ground homogeneously in a mortar and mixed with 1000 ml of distilled water and kept for 24 hours.…”

Section: Methodsmentioning

confidence: 99%

Effect of Different Doses of Jatropha Leaf Extract on Growth and Development of French Bean (Phaseolus vulgaris L.) and Brinjal (Solanum melongena)

Chack¹,

Das²,

Kalita³

et al. 2017

Int.J.Curr.Microbiol.App.Sci

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Allelopathic Effects of Aqueous Extract of Leaves of <i>Parthenium Hysterophorus</i> L. on Seed Germination and Seedling Growth of Some Cultivated and Wild Herbaceous Species

Cited by 78 publications

References 19 publications

Allelopathic action of parthenium and its rhizospheric soil on maize as influenced by growing conditions

Allelopathic action of parthenium and its rhizospheric soil on maize as influenced by growing conditions

Phytotoxic Activity of Parthenium Against Wheat and Canola Differ With Plant Parts and Bioassays Techniques

Effect of Different Doses of Jatropha Leaf Extract on Growth and Development of French Bean (Phaseolus vulgaris L.) and Brinjal (Solanum melongena)

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