Atividade alelopática de extratos de diferentes orgãos de Caesalpinia ferrea na germinação de alface

Oliveira, Andreya Kalyana de; Coelho, Maria de Fátima Barbosa; Maia, Sandra Sely Silveira; Diógenes, Francisco Ésio Porto

doi:10.1590/s0103-84782012000800011

Cited by 16 publications

(20 citation statements)

References 16 publications

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“…According to Ferreira and Borghetti (2004), allelopathic effects are more evident in characteristics related to growth than in the germination process. Oliveira et al (2012a) confirmed this for Caatinga species with E. velutina flower, bark and seeds extracts and for C. ferrea extracts (OLIVEIRA et al, 2012b) and for Z. joazeiro extracts (Oliveira et al (2012c). This study supports the findings of Ferreira and Borghetti (2004) for melon emergence in sand, which were consequences of the germination process.…”

Section: Resultssupporting

confidence: 85%

“…In studies with different species, roots were more sensitive to allelopathic extracts (BORELLA et al, 2009;HAIDA et al, 2010). There was a reduction in lettuce seedling root growth compared to the control when they were exposed to extracts from C. ferrea leaves (OLIVEIRA et al, 2012b) and Mimosa tenuiflora (Wild) Poir. bark (SILVEIRA et al, 2011).…”

Section: Resultsmentioning

confidence: 94%

“…var. ferrea) pod and leaf extracts, obtained at a high temperature (100°C), reduced the percentage of lettuce seed germination compared to the controls and additionally, caused a high percentage of abnormal seedlings (OLIVEIRA et al, 2012b).…”

Section: Introductionmentioning

confidence: 97%

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Allelopathy by extracts of Caatinga species on melon seeds

et al. 2016

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The melon crop is of great socioeconomic importance in Brazil and some species from the Caatinga biome show allelopathic effects on other species. The aim of this study was to assess leaf and seed extracts of cumaru (Amburana cearensis (Allemao) A.C. Sm.), the jujube tree (Zizyphus joazeiro Mart.), Jucá (Caesalpinia ferrea Mart. Ex. Tul. Var. Ferrea) and mulungu (Erythrina velutina Willd.) on the emergence of melon seeds (Cucumis melo L.). Leaves and seeds were used to produce extracts for each species at concentrations of a) 1%, b) 0.5% c) 0.25%, d) 0.125% and e) 0% (control). The experiment was conducted with each extract type and its respective concentrations in a completely randomized design, with four replicates, each of 20 seeds. The percentage emergence and rate index, percentage of abnormal seedlings, seedling dry matter and seedling shoot and root length were assessed. Seed extracts of A. cearensis prevented melon germination, whereas the other extracts had no effect on this variable. Leaf extracts of A. cearensis and leaf and seed extracts of Z. joazeiro, C. ferrea and E. velutina resulted in abnormal melon seedlings. The percentage of abnormal melon seedlings exceeded 30% when treated with C. ferrea seed extract at the highest concentration. Most extracts did not affect seedling dry matter, but E. velutina leaf and seed extract increased the dry matter accumulation of melon seedlings and Z. joazeiro seed extract decreased dry matter accumulation at a concentration of 0.25%. The highest concentrations of mulungu and jucá leaf extracts promoted the shoot growth of melon seedlings. The extract from E. velutina seeds negatively affected root length compared to the control, similar to the effect of C. ferrea and E. velutina leaf extracts at the highest concentrations. Extracts of different organs of Caatinga plants can affect the emergence and characteristics related to seedling growth, depending on the concentration. Most extracts did not affect germination or the emergence rate index, but affected seedling growth. Key words: Cucumis melo L. Amburana cearensis. Ziziphus joazeiro. Caesalpinia férrea. Erythrina velutina. ResumoA cultura do melão tem grande importância socioeconômica no Brasil e algumas espécies do bioma Caatinga têm ação alelopática sobre outras espécies. O objetivo do trabalho foi avaliar os extratos de folhas e sementes de cumaru (Amburana cearensis (Allemao) A.C. Sm.), juazeiro (Zizyphus joazeiro Mart.) jucá (Caesalpinia ferrea Mart. ex. Tul. var. ferrea) and mulungu (Erythrina velutina Willd.) na emergência de sementes de melão (Cucumis melo L.). Os tipos de extratos foram os de folhas e sementes para cada espécie em concentrações de a) 1%, b) 0,5%, c) 0,25%, d) 0,125% e e) 0% (testemunha). Cada tipo de extrato com suas respectivas concentrações constituiu um experimento que foi conduzido em delineamento experimental inteiramente casualizado com quatro repetições de 20 sementes. Foram avaliadas a porcentagem e índice de velocidade de emergência, porcentagem de plântulas anormais...

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Section: Resultssupporting

confidence: 85%

Section: Resultsmentioning

confidence: 94%

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Allelopathy by extracts of Caatinga species on melon seeds

et al. 2016

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“…Sodaeizadeh et al (2009) observed that all parts of Pegamum harmala showed phytotoxic effects on the germination and growth of weeds. Similarly, extracts of the leaves, bark and pods of Caesalpinia ferrea exert allelopathic activity on the development of lettuce seedlings (OLIVEIRA et al, 2012). However, aqueous extracts Mikania micrantha leaves exhibited greater phytotoxic effects than root extracts on the germination and shoot growth of woody species, whereas the aqueous root extracts affected the root growth of these species to a greater extent (WU et al, 2009).…”

Section: ♦ Radish ('Y)mentioning

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.

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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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“…var. ferrea) obtidos a quente (100°C) reduziram a porcentagem de germinação de alface em relação à testemunha, além de causar alta porcentagem de plântulas anormais(OLIVEIRA et al, 2012b). A cultura do melão tem grande importância socioeconômica no Brasil e tem desempenhado um papel crucial na pauta de exportações de frutos brasileiros ocupando o terceiro lugar em vendas.…”

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