Allelopathy of leaf extracts of jatropha (Jatropha curcas L.) in the initial development of wheat (Triticum aestivum L.)

Reichel, Tharyn; Barazetti, Jéssica Fernanda; Stefanello, Suzana; Paulert, Roberta; Zonetti, Patrícia da Costa

doi:10.4067/s0718-34292013000100006

Cited by 16 publications

(16 citation statements)

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“…It is commercially grown mainly for the production of fruits for fresh consumption, reaching high prices both in the domestic and external markets (Santos et al, 2011;Nicolini et al, 2012.). ) is considered a model plant for these studies because of its high sensitivity, even at low allelochemicals concentrations (Borges et al, 2011;Nicolini et al, 2012;Reichel et al, 2013. ).…”

Section: Introductionmentioning

confidence: 99%

Allelopathic effect of Passiflora alata Curtis extracts on seed germination

et al. 2016

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Many plant chemical compounds can interfere on seed germination and on the development of other plants. Thus, this research aimed to verify the effect of sweet passion fruit seeds (Passiflora alata Curtis) extracts, under lettuce seed germination and lettuce seedlings growing. The experiment was carried out in a controlled environment. The treatments were: T1-distilled water as a control; T2-embryo extract; T3-tegument extract; T4-whole grain extract; T5-soaking solution. Lettuce seed (Lactuca sativa L.) cv. Babá de Verão, was used as a bioindicator of the allelopathic effect. When the treatment of embryo extract of sweet passion fruit was applied, a lower germination percentage and lower speed emergence rate of lettuce seeds were observed. The largest number of abnormal seedlings was observed from seeds germinated in the embryo extract (T2) and the soaking solution (T5). The sweet passion fruit embryo extract discloses compounds that are able to inhibit the germination and can negatively influence the development of lettuce seedlings.

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Section: Introductionmentioning

confidence: 99%

Allelopathic effect of Passiflora alata Curtis extracts on seed germination

et al. 2016

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“…Wheat caryopses treated with aqueous leaf extracts of Fumaria indica and Polygonum plebejum also exhibited inhibited germination and seedling growth (ULLAH et al, 2013). In contrast, treatment with leaf extracts of Jatropha curcas (REICHEL et al, 2013) and Euphorbia dracunculoides (TANVEER et al, 2012) affected the growth of wheat but did not affect germination. All plants produced secondary metabolites, but these differed in quality and quantity among species.…”

Section: Resultsmentioning

confidence: 83%

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

Anese¹,

Grisi²,

Jatobá³

et al. 2015

Biosci. J.

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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.

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“…Os fatores determinantes para essa mudança são: fonte do extrato, forma de obtenção, concentração e as condições climáticas a qual estão expostas. Esses parâmetros podem influir nas respostas da bioatividade, devido ao risco da instabilidade dos princípios ativos (REICHEL et al, 2013).…”

Section: Discussionunclassified

Atividade Alelopática De Espécies Invasoras Sobre a Germinação E O Desenvolvimento Inicial De Arbórea Nativa

Hartmann

Fortes

Cassol

et al. 2017

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ResumoPlantas invasoras surgem durante a sucessão ecológica e se desenvolvem juntamente com arbóreas nativas. A convivência entre essas espécies pode ser influenciada por vários fatores, como a alelopatia, definida como o conjunto de alterações diretas ou indiretas, que uma planta exerce sobre outra. Assim o objetivo do trabalho foi identificar a existência da ação alelopática na germinação das sementes e a possível interferência no crescimento inicial de plântulas de P. rigida quando submetidas aos extratos aquosos de B. brizantha e M. maximus. Para tanto, foi utilizado um DIC em esquema fatorial 2X4 (espécies x tratamentos). Foi preparado o extrato aquoso de folhas frescas das espécies invasoras, de forma independente, os quais foram diluídos nas proporções 2,5; 5; e 10% e como testemunha utilizou-se água destilada (0%). As sementes e plântulas de P. rigida foram submetidas aos diferentes extratos e avaliadas quanto aos parâmetros: germinação, índice de velocidade de germinação, crescimento de raiz e parte aérea e peso da massa seca. Após análise dos dados, foi possível verificar que ambos os extratos não apresentaram interferência alelopática na germinação e no índice de velocidade de germinação das sementes de P. rigida, assim como no crescimento das raízes de suas plântulas. No entanto, quando as plântulas foram submetidas ao extrato de M. maximus nas duas maiores concentrações foi observado maior crescimento da parte aérea. Sendo assim, não há interferência alelopática negativa dos extratos de B. brizantha e M. Maximus na germinação das sementes ou no crescimento inicial de P. rigida. Palavras-chave: Alelopatia; gramíneas; invasão biológica. AbstractAlelopathic activity of invasive species on the germination and initial development of native tree. Invasive plants arise during ecological succession and develop along with native trees. The coexistence between these species can be influenced by several factors, such as allelopathy, defined as the set of direct or indirect changes that one plant exerts on another. Thus, the objective of this work was to identify the existence of allelopathic action on seed germination and the possible interference in the initial growth of P. rigida seedlings when submitted to aqueous extracts of B. brizantha and M. maximus. For this, a DIC was used in a 2X4 factorial scheme (species x treatments). The aqueous extract of fresh leaves of the invasive species was prepared independently, which were diluted in the proportions 2.5; 5; And 10% and distilled water (0%) was used as control. Seeds and seedlings of P. rigida were submitted to different extracts and evaluated for germination, germination speed index, root and shoot growth and dry mass weight. After analyzing the data, it was possible to verify that both extracts did not present allelopathic interference in the germination and germination speed index of P. rigida seeds, as well as in the growth of the roots of their seedlings. However, when the seedlings were submitted to the extract of M. maximus in the two higher concent...

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Allelopathy of leaf extracts of jatropha (Jatropha curcas L.) in the initial development of wheat (Triticum aestivum L.)

Cited by 16 publications

References 9 publications

Allelopathic effect of Passiflora alata Curtis extracts on seed germination

Allelopathic effect of Passiflora alata Curtis extracts on seed germination

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

Atividade Alelopática De Espécies Invasoras Sobre a Germinação E O Desenvolvimento Inicial De Arbórea Nativa

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