Atividade alelopática de extratos brutos de três espécies de Copaifera (Leguminosae-Caesalpinioideae)

Filho, A.P.S. Souza; Gurgel, Ely Simone Cajueiro; Queiroz, M.S.M; Santos, João Ubiratan Moreira dos

doi:10.1590/s0100-83582010000400006

Cited by 18 publications

(10 citation statements)

References 20 publications

(13 reference statements)

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…The results found in the present study correlating the chemical constitution and the allelopathic activity of each essential oil and its major constituents corroborate the observations made by Souza Filho et al (2010), who stated that the effects of essential oils on seedling germination and vigor cannot be generalized and can be explained in an individualized way considering their main chemical constituents.…”

Section: Discussionsupporting

confidence: 91%

Physiological and Sanitary Attributes Evaluation of Organic Coriander Seeds Treated With Essential Oils

Waureck¹,

Novembre²

2020

JAS

View full text Add to dashboard Cite

For seeds organic production the control of fungi with chemical fungicides is not indicated, which requires the use of biological products. In this sense, the use of essential oils derived from plants is a possibility for microorganisms control. This study evaluated technical feasibility of applying the essential oils of clove, lemongrass, rosemary, eucalyptus, ginger and Tea tree, in concentrations of 500, 1.000, 1.500 and 2.000 μL-1 to organic coriander seeds of the Verdon variety, besides the control. At the beginning of storage and every 60 days the seeds were evaluated for water content, germination, germination velocity index and root emission, seedling emergence and seedling emergence speed index, to shoot length, rootlength, total length and sanity. The experimental design was a completely randomized (DCR), in a 6x4 + 1 factorial scheme, with six essential oils and four concentrations + control treatment, with four replications for germination and vigor analysis, and eight replications for sanitary analysis. With increasing concentration of essential oils, there was a linear reduction in germination and a reduction in the incidence of Alternaria sp. using clove and rosemary oils at a concentration of 500 μL L-1, eucalyptus at a concentration of 1.500 μL L-1 and ginger with 2.000 μL L-1. Therefore, it is possible to use clove and rosemary essential oils up to 500 μL L-1 to reduce the incidence of Alternaria sp. without causing significant reduction in germination.

show abstract

Section: Discussionsupporting

confidence: 91%

Physiological and Sanitary Attributes Evaluation of Organic Coriander Seeds Treated With Essential Oils

Waureck¹,

Novembre²

2020

JAS

View full text Add to dashboard Cite

show abstract

“…However, the use of non-polar extracts cannot be ignored, because they could be a source of active terpenes. Souza-Filho et al (2010) described inhibition of the root development of Mimosa pudica by the hexane extract of Copaifera duckei. Silva et al (2011) found that the allelopathic effect of Pyrostegia venusta was independent of polarity, the hexane and methanol extracts being the most active.…”

Section: Resultsmentioning

confidence: 99%

“…Cucumber (Cucumis sativus L.) is one such plant. The prospecting of plants for their allelopathic or phytotoxic potential typically involves the use of aqueous, hydroalcoholic extracts or partitioning with solvents of increasing polarity (Souza-Filho et al 2010).…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Phytotoxicity of organic extracts of Turnera ulmifolia L. and Turnera diffusa Willd. ex Schult. in cucumber seeds

et al. 2013

View full text Add to dashboard Cite

We evaluated the phytotoxic effects that the hexane, ethyl acetate and methanol extracts from leaves and branches of the species Turnera ulmifolia L. and Turnera diffusa Willd. ex Schult. (Turneraceae), at concentrations of 1.25, 2.50, 3.75 and 5.00 mg ml −1 , have on seed germination and seedling development in cucumber (Cucumis sativus L.). None of the extracts tested prevented germination, although the ethyl acetate extracts of T. diffusa, at 3.75 and 5.00 mg ml −1 , reduced the mean germination speed and time to germination. Hexane extracts of both species reduced the main root length, number of secondary roots and hypocotyl length. In the ethyl acetate and methanol extracts, the number of secondary roots and hypocotyl length varied by species and concentration. Ethyl acetate extracts of T. ulmifolia at ≤ 2.50 mg ml −1 stimulated growth of the main root and hypocotyl, as did T. ulmifolia methanol extracts at 1.25 and 3.75 mg ml −1 ; all other extract/concentration combinations had an inhibitory effect on those parameters. The hexane and ethyl acetate extracts of T. diffusa inhibited the formation of secondary roots and of the main root, although significant inhibition of hypocotyl growth was observed only at ≥ 2.50 mg ml −1 . Comparatively, T. diffusa extracts inhibited development to a greater degree, thus presenting greater allelopathic potential, than did T. ulmifolia extracts.

show abstract

“…However, within a single species, the amount may vary among different plant parts, as noted by Gatti et al (2010) in Aristolochia esperanzae O. Kuntze, by Souza-Filho et al (2010) in three Copaiferae species, and by Wu et al (2009) in Mikania micrantha. These compounds can be considered phytotoxic depending on their allelopathic action, bioactive concentration, persistence and form in which they are released in the environment (INDERJIT;DUKE, 2003).…”

Section: Introductionmentioning

confidence: 99%

Phytotoxic activity of differents plant parts of Drimys brasiliensis miers on germination and seedling development

Anese¹,

Grisi²,

Jatobá³

et al. 2015

Biosci. J.

View full text Add to dashboard Cite

ABSTRACT:The aim of this study was to evaluate the phytotoxic activity of aqueous extracts from mature leaves, stem bark and roots of Drimys brasiliensis Miers on germination and initial seedling development of two target species, Triticum aestivum L. (wheat) and Raphanus sativus L. (radish). The aqueous extract was prepared in a proportion of 10 g of plant powder, dissolved in 100 mL of distilled water, resulting in a 10% extract concentrate. Dilutions were made with distilled water to 7.5; 5.0; 2.5% and 0% (control). Germination and seedling growth bioassays were carried out under controlled laboratory conditions. The different plant parts exerted inhibitory effects on germination and early growth of wheat and radish, however, the extract obtained from the leaves was more effective in inhibiting the germination of radish. All plant parts of D. brasiliensis may constitute a promising source in the search for compounds capable of acting as natural phytotoxins.

show abstract

Atividade alelopática de extratos brutos de três espécies de Copaifera (Leguminosae-Caesalpinioideae)

Cited by 18 publications

References 20 publications

Physiological and Sanitary Attributes Evaluation of Organic Coriander Seeds Treated With Essential Oils

Physiological and Sanitary Attributes Evaluation of Organic Coriander Seeds Treated With Essential Oils

Phytotoxicity of organic extracts of Turnera ulmifolia L. and Turnera diffusa Willd. ex Schult. in cucumber seeds

Phytotoxic activity of differents plant parts of Drimys brasiliensis miers on germination and seedling development

Contact Info

Product

Resources

About