Plant extracts and essential oils on the control of  Alternaria alternata ,  Alternaria dauci and on the germination and emergence of carrot seeds ( Daucus carota L.)

Lima, Cristina Batista de; Rentschler, Luana Lopes Assumpção; Bueno, João Tavares; Boaventura, Ana Claudia

doi:10.1590/0103-8478cr20141660

Cited by 21 publications

(15 citation statements)

References 8 publications

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“…Indeed, some essential oils have demonstrated to be effective against Alternaria spp. Immersion of carrot seeds in both the neem and the orange essential oils displayed lower A. alternata incidence regardless of their concentration; the effect of the essential oils was similar to that of a standard fungicide applied as seed treatment (Lima et al, 2016). The growth of A. padwickii was completely inhibited by the essential oils of Callistemon citrinus and Cymbopogon citratus (Nguefack et al, 2013).…”

Section: Introductionmentioning

confidence: 78%

Essential Oil of Baccharis dracunculifolia (Asteraceae) Decreases Alternaria Rot in Pitahaya

Debona¹,

Pivotto²,

Tetzlaff³

et al. 2021

JAS

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Alternaria rot, caused by Alternaria alternata, is one of the most destructive diseases of pitahaya (Hylocereus spp.). We investigated the effect of the essential oil of Baccharis dracunculifolia (Asteraceae) (EOB) in the control of A. alternata. Two studies were performed in Petri dishes containing potato dextrose agar medium amended with concentrations of the EOB ranging from 5 to 1,000 µg mL-1 (first study) and from 30 to 2,000 µg mL-1. The diameter of the fungal colony was recorded daily. These data were used to calculate the the area under the mycelial growth progress curve (AUMGPC) and mycelial growth index (MGI). In the third study, the control of Alternaria rot in pitahaya fruits by EOB was investigated by adding the EOB into an edible coat based on cassava starch and sorbitol which was prepared in Tween 20. Three treatments, containing EOB at 500, 1,000 or 2,000 µg mL-1, were assessed. Two additional treatments, one containing water and another containing only the edible coating served as controls. Pitahaya fruits were immersed in those solutions for 10 min, allowed to dry and inoculated with A. alternata 48 h later. The EOB was found to inhibit the mycelial growth and a negative and quadratic model best described the relationship of the EOB concentrations with MGI and AUMGPC. Results from the experiment performed with pitahaya fruits showed that Alternaria rot was decreased with increasing EOB concentrations. Therefore, EOB is a promising and ecofriendly method that may be included in the management of Alternaria rot in pitahya.

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Section: Introductionmentioning

confidence: 78%

Essential Oil of Baccharis dracunculifolia (Asteraceae) Decreases Alternaria Rot in Pitahaya

Debona¹,

Pivotto²,

Tetzlaff³

et al. 2021

JAS

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“…In our investigation, on the contrary, it provoked the germination of sporadical colonies of these fungi. The effectiveness of orange peel oil against A. alternata and Alternaria dauci (JG Kühn) JW Groves & Skolko, which germinated from carrot seed (in vivo), was proved while studying the effectiveness of extractions and essential oils from different plants (Lima et al, 2016). The antifungal effects of orange peel oil are attributed to the availability of monoterpene citrine, which has manifested the ability to inhibit the growth of mycelium A. alternata in vitro (Marostica et al, 2007).…”

Section: Discussionmentioning

confidence: 99%

Karyotypes and genome size of Adonis amurensis and Adonis apennina (Ranunculaceae) from Asian Russia

Mitrenina¹,

Erst²,

Skaptsov³

et al. 2021

Ukr J Ecol

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The karyotypes of Adonis amurensis from Amur Oblast,' and Adonis apennina from Altai Republic, Khakassia Republic, and Irkutsk Oblast' have been investigated. The karyotype formula was obtained as 2n = 2x =16 = 8m + 8sm(4sat) for all specimens. We estimated karyotype asymmetry through the calculation of the Coefficient of Variation of Chromosome Length (CVCL), Coefficient of Variation of Centromeric Index (CVCI), and Mean Centromeric Asymmetry (MCA), and determination of Stebbins asymmetry index. The chromosome set of Adonis amurensis was found to be more symmetrical than the chromosome set of Adonis apennina. The average absolute nuclear DNA content (2C–value) was originally determined for Adonis amurensis and Adonis apennina by flow cytometry and attained on average 20.38 pg and 17.29 pg, respectively.

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“…Os óleos de alho e de laranja não influenciaram a germinação de sementes de manjericão nas concentrações avaliadas (Figura 1), tanto que nenhuma equação foi ajustada. Segundo Lima et al (2016) o extrato de alho e o óleo essencial de laranja na concentração de 10% exercem controle sobre a espécie Alternaria alternata. O resultado obtido no presente estudo demonstra que, os óleos essenciais de alho e laranja podem ser utilizados no tratamento de sementes de manjericão visando o controle de Alternaria com segurança, no que diz respeito a possíveis danos ao potencial germinativo.…”

Section: Aplicaçãounclassified

Efeito dos óleos essenciais de alho e laranja e do surfactante Tween® 80 sobre a germinação de sementes de manjericão

Lima¹,

Villela²

2017

Rev. Ciênc. Agroamb.

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Resumo: O objetivo do presente estudo foi verificar o efeito de diferentes concentrações dos óleos essenciais de alho e laranja bem como do surfactante Tween • 80 sobre a germinação das sementes de manjericão. As sementes foram submetidas aos tratamentos com óleos essenciais comerciais emulsionados com o surfactante Tween ® 80 (1:1) nas concentrações de 1 a 10% (v/v), além de duas testemunhas, somente água destilada e Tween ® 80 a 1% em água destilada. O contato das sementes com cada tratamento foi realizado de duas formas: via direta por imersão durante 1 minuto e via indireta, pulverizando 6 mL de cada tratamento em uma folha de papel-filtro fixada na tampa dos recipientes. As sementes foram analisadas pelo teste de germinação (TG) e pela primeira leitura da germinação (PLG). O delineamento foi inteiramente casualizado em esquema fatorial 2 × 2 × 10 (óleos essenciais, formas de aplicação e concentrações), os dados foram submetidos à análise de variância e as médias foram agrupadas pelo teste de Scott-Knott a 5%. Conclui-se que a imersão por 1 minuto em solução preparada com os óleos até a concentração de 10% pode ser realizada com segurança, sem prejuízos à germinação dessas sementes. O surfactante demonstrou ser inerte à germinação das sementes de manjericão.Palavras-chave: Ocimum basilicum; qualidade fisiológica; tratamento de sementes.The effects of garlic and orange essential oils and Tween ® 80 surfactant on the germination of basil seeds

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Plant extracts and essential oils on the control of Alternaria alternata , Alternaria dauci and on the germination and emergence of carrot seeds ( Daucus carota L.)

Abstract: Plant extracts and essential oils on the control of Alternaria alternata, Alternaria dauci and on the germination... Ciência Rural, v.46, n.5, mai, 2016.

Cited by 21 publications

References 8 publications

Essential Oil of Baccharis dracunculifolia (Asteraceae) Decreases Alternaria Rot in Pitahaya

Essential Oil of Baccharis dracunculifolia (Asteraceae) Decreases Alternaria Rot in Pitahaya

Karyotypes and genome size of Adonis amurensis and Adonis apennina (Ranunculaceae) from Asian Russia

Efeito dos óleos essenciais de alho e laranja e do surfactante Tween® 80 sobre a germinação de sementes de manjericão

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